The invention relates to a device for detecting a short circuit in a transistor, comprising a transistor (1), which comprises a source (S), a drain (D) and a gate (G), and an integrated control circuit (2), which is configured to detect a short circuit by comparing a voltage applied to a DESAT terminal with a first predefined voltage threshold. The device is configured so that the voltage applied to the DESAT terminal reflects the voltage between the drain (D) and the source (S). The device further comprises a circuit (7) which is external to the integrated control circuit (2), the external circuit (7) being configured so that, when the voltage at the DESAT terminal (Vcdesat) exceeds a second voltage threshold, which is lower than the first voltage threshold, the external circuit (7) causes a drop in the voltage between the gate and the source of the transistor. The invention also relates to a corresponding method.
H03K 17/082 - Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
H02H 7/122 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers for static converters or rectifiers for inverters, i.e. DC/AC converters
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H03K 17/16 - Modifications for eliminating interference voltages or currents
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
2.
METHOD FOR CONTROLLING AN INVERTER COMPRISING SELECTING A SAFETY MODE
The present invention relates to a method for controlling an inverter that controls an electric machine and that is controlled by a first control device in a nominal operating mode and by a second control device in order to apply a safety operating mode. The safety mode is chosen from: —an ASC operating mode in which phases of the electric machine (5) are short-circuited; and —an FW operating mode that puts the electric machine (5) into freewheeling mode. The method comprises, in order to select the safety mode to be applied: determining the voltage on a high-voltage bus (UHVDC), and —if the voltage on the high-voltage bus (UHVDC) is lower than a first voltage threshold (Uthi), the FW mode is selected (S4), —if the voltage on the high-voltage bus (UHVDC) is greater than a second voltage threshold (Uth2) that is greater than the first voltage threshold (Uthi), the ASC mode is selected (S6), —if the voltage is between t first voltage threshold (Uthi) and the second voltage threshold (Uta), a parameter is determined representative of the ability of the electric machine to inject power onto said high-voltage bus in a risk-free manner is determined; and —if the parameter is greater than or equal to a threshold value, ASC mode is selected (S8); —if the parameter is lower than the threshold value, the FW mode is selected (S9).
H02H 7/08 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
H02H 3/02 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection Details
H02H 7/122 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers for static converters or rectifiers for inverters, i.e. DC/AC converters
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H02P 29/024 - Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
H02P 29/032 - Preventing damage to the motor, e.g. setting individual current limits for different drive conditions
3.
Connectors guide for an inverter comprising a temperature sensor housing
The invention relates to a connector guide for an inverter comprising at least two power modules (28), namely at least a first power module and a second power module, the connector guide (1) comprising a substantially flat rigid body (2) in which orifices (5) are formed for the passage of control pins (8) for the power modules (28), said orifices (5) being calibrated and positioned in such a way as to conform to the position and orientation of said control pins (8). The body of the connector guide comprises a so-called intermediate portion (13) which is intended to be positioned between the first power module and the second power module, the intermediate portion (13) comprising a housing (15) suitable for accepting a temperature sensor (16). The connector guide thus makes it possible to ensure that the power modules control pins are correctly positioned while at the same time also ensuring the positioning and retention of the temperature sensor.
A rotor of an electric machine, rotating about an axis of rotation X, the rotor comprising:—a shaft (9) arranged along the axis of rotation,—a rotor mass (3), disposed around the shaft, comprising:—a central bore (4),—at least two openings (5), provided in the rotor mass and distributed circumferentially around the central bore, the two openings leaving a radial strip (6) therebetween, the radial strip having a smaller width, at least one bridge of material (7) being provided between an opening and the central bore, the bridge of material being of variable width and having a greater width, and the ratio between the smaller width of the radial strip and the larger width of the bridge of material being between 0.75 and 1.25.
H02K 1/22 - Rotating parts of the magnetic circuit
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
The invention relates to a lubricating chute (2) for a reduction gear (1) of a rotary electric machine, the chute (2) comprising a flow floor (9) having a bottom surface (10) and one or more discharge ports (25, 26, 27, 28) arranged in the flow floor (9), the bottom surface (10) being bordered by guide walls (11, 12) connecting to the flow floor (9) so as to form at least one passage (17, 18, 19) for circulating a lubricant towards the one or more discharge ports (25, 26, 27, 28), and comprising at least one discharge port (25, 26, 27, 28) which is surrounded by a raised rim (37).
The invention relates to an inverter comprising a casing, a circuit board (3), a power module, a connector guide (10) which is configured to keep male connectors of the power module in a given orientation, and a busbar system (6) connected to the power module (4) and comprising a ferromagnetic element (14) that is suitable for interacting with a current sensor (9) that is rigidly connected to the circuit board (3). The inverter (1) comprises two elongate centering elements such as centering fingers or pins (11) which extend in parallel and are arranged at a distance from one another, and are rigidly connected to a reference part of the inverter. In this instance, the two elongate centering elements pass through the circuit board (3), the connector guide (10) and the busbar system (6), with the casing (2) or part of the casing (2) forming the reference part. This ensures that the circuit board (3), the connector guide (10) and the busbar system (6) are correctly aligned with one another.
The invention relates to an electrical conduction bar (1) comprising an arm (2) and a connection terminal (3) which comprises a base (4) attached to the arm (2) and two outer branches (5) attached to the base (4) by respective ends (6) which extend opposite and at a distance from one another, wherein the outer branches (5) are deformable relative to the base (4) so as to be able to be spaced apart from and/or brought closer to one other. The connection terminal (3) comprises a rigid central branch (8) which is attached to the base (4) and located between the outer branches (5) so as to define two cavities (11) between the central branch (8) and each outer branch (5), each cavity (11) being intended to accommodate a connection pin of an electronic component.
The invention relates to an assembly comprising at least one electrical conduction bar (4), an electrical connector (5) and an interconnector (7) for electrically connecting the electrical conduction bar to an electronic device. The interconnector (7) comprises a first end (8) shaped so as to be connected to the electrical conduction bar (4) by means of a first screw (10) and a second end (9) shaped so as to be connected to the electronic device. The first screw (10) is suitable for being screwed into a tapped element of the assembly. The first end (8) of the interconnector (7) comprises a hole suitable for receiving the first screw (10). The first screw (10) passes through a hole in the electrical conduction bar (4) and a hole in the electrical connector (5) such that, when the first screw (10) is screwed into the tapped element, a threefold attachment and threefold connection is formed between the interconnector (7), the electrical conduction bar (4) and the electrical connector (5). The preferred application relates to the connection between electrical conduction bars of the control board of an inverter (1) in, for example, an electric vehicle.
The invention relates to an interconnection member for electrically interconnecting at least two electronic components located in different planes. The interconnection member comprises a body (2) in which is formed an orifice (3) passing through the body (2) and at least one connection pin (9) attached to the body (2) in order to establish an electrical connection between the first electronic component and the body (2), the body (2) comprising a bearing surface (8) intended to bear against the first electronic component. The body (2) comprises a conductive surface intended to bear against the second electronic component in order to establish an electrical connection between the second electronic component and the body (2), the conductive portion of the connection pin (9) being located between a plane defined by the bearing surface (8) of the body (2) and a plane defined by the conductive surface of the body (2).
H01R 12/58 - Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
H01R 4/58 - Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one anotherMeans for effecting or maintaining such contactElectrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
The invention relates to an axial flux rotary electric machine (1) comprising at least one stator (2) and at least one rotor (4) arranged along the axis of rotation (X), the stator (2) being cooled by a circulating coolant, the stator (2) comprising at least one tooth (20) bearing a coil (100) wound concentrically around the tooth (20), the coil (100) comprising at least one flattened wire (106) wound on itself around the corresponding tooth (20) in a plurality of layers, wherein two consecutive layers of the flattened wire (106) are spaced apart by a non-zero distance d, the stator (2) further comprising at least one shell (9) accommodating at least one coil (100) wound around the tooth (20), the machine (1) being configured to enable the coolant to circulate between the layers of wire (106) in the shell (9).
H02K 3/24 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
The invention relates to a reduction gear assembly (1) for a motor vehicle, the assembly comprising: - a first input shaft (11) and a second input shaft (12); - a first output shaft (21) and a second output shaft (22); - at least one transmission stage (30) respectively connecting the first output shaft (21) and the second output shaft (22) to the first input shaft (11) and to the second input shaft (12), the transmission stage (30) comprising at least a first intermediate shaft (31) and a second intermediate shaft (32), the first intermediate shaft (31) passing through the second intermediate shaft (32) and the first intermediate shaft (31) being mounted on first and second bearings (41, 42) arranged on the casing (50), the second intermediate shaft (32) being mounted so as to be freely rotatable on the first intermediate shaft (31).
Rotating electrical machine (1) extending along a longitudinal axis X, having a rotor (2) and a wound stator (3) having winding heads (30), the rotor (2) and the stator (3) being arranged in a casing (4) having an internal wall, the rotor (2) having at least one channel for distribution of a cooling fluid, the machine having at least one guide device (10) arranged radially between the winding heads of the stator and the internal wall of the casing, the guide device (10) being configured to orient the cooling fluid ejected from the rotor, particularly by centrifugal force, to the winding heads of the stator.
The invention relates to a rotor (30) for a rotary electric machine, comprising: - at least one permanent magnet (1) having, in cross-section, perpendicular to an axis of rotation of the rotor, at least one long side (2a) and at least one short side (3a); and - a rotor body (33) comprising stacked laminations, the rotor body (33) comprising at least one cavity (4) receiving the permanent magnet (1), the cavity (4) being delimited by at least one small face (6a) opposite one short side (3a) of the permanent magnet (1), at least one lamination (6) comprising at least one tab (7) connecting to the small face (6a) of the cavity (4) and extending into the cavity (4) in the direction of the air gap, the one or more tabs (7) making it possible to hold the permanent magnet (1) against an opposing face (6b) of the cavity (4).
The invention relates to an electrical conductor for a stator of a rotary electric machine, in the form of a U-shaped hairpin, having: —first and second legs intended to extend axially in a first slot A and a second slot R, respectively, of the stator, —a bundle portion connected to the first and second legs of the electrical conductor in each case by an oblique portion, —the two oblique portions being in the form of a helical portion.
H02K 3/28 - Layout of windings or of connections between windings
H02K 15/04 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines
16.
METHOD FOR SELECTING A CHOPPING FREQUENCY OF AN INVERTER CONTROLLING AN ELECTRIC MACHINE, AND CORRESPONDING DEVICE
The invention relates to a method for selecting a chopping frequency for application thereof to an inverter controlling a rotating electric machine, wherein the chopping frequency is chosen from among multiple predetermined frequencies depending on the position, in a map, of a current operating point of the assembly formed by the electric machine and the inverter, said map having at least the rotational speed (N) of the electric machine or the frequency (Fe) of the electric current applied thereto as parameter. In at least part of the map, the chopping frequency is furthermore chosen based on a parameter representative of a thermal condition of the electronic switches contained in the inverter. The invention furthermore relates to a method for controlling a corresponding inverter, and to a device implementing this method. The invention is preferably applied to an electric motor vehicle.
B60W 10/08 - Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
B60W 10/26 - Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
H02P 21/22 - Current control, e.g. using a current control loop
H02P 23/14 - Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
H02P 27/04 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
17.
CONNECTOR GUIDE FOR AN INVERTER COMPRISING A PRESSING MEMBER
The invention relates to a pressing device to be installed in an inverter comprising at least two power modules arranged on a cooling surface of the inverter, the pressing device comprising: - a rigid body (50) having a substantially planar shape and comprising a first face (51) intended to face the cooling surface, - at least two separate pressing members (60) carried by the first face (51) of the body (50), each pressing member (60) being intended to be associated with one of the power modules of the inverter and configured to exert a force substantially perpendicular to a general plane of extension of the body (50) when the pressing member (60) is compressed to press the associated power module against the cooling surface, the body (50) comprising first portions covering each pressing member (60), the body (50) further comprising a second portion (55), adjacent to or superposed on the first portion (53), in which holes (22) forming guides are provided for pins (21) for controlling the power module (2).
The invention relates to an inverter housing for receiving at least one power electronics component (42, 43) of an inverter (4), wherein the housing (41) has walls (411) defining a receiving volume (V) for the at least one power electronics component (42, 43). The housing has at least one pad (47) protruding from an inner surface (412) of the walls (411) into the receiving volume (V), the at least one pad (47) being configured such that, when the at least one component is received in the receiving volume (V), a terminal (421, 422, 432) of this at least one power electronics component (42, 43) or a conducting bar electrically connected to the terminal (421, 422, 432) of the power electronics component (42) faces a free end (472) of the pad (47) at a predetermined distance such that an interface element (48) can be interposed between the free end (472) of the pad (47) and the terminal (421, 422, 432) of the power electronics component (42, 43) or the conducting bar.
The invention relates to an electromagnetic compatibility filter (1) comprising two flat electrical conduction bars (2, 2') and comprising filtering components arranged on the electrical conduction bars (2, 2'). The two electrical conduction bars (2, 2') extend substantially in a direction referred to as the longitudinal direction over the entirety of a filtering portion (6) of the electrical conduction bars (2, 2') on either side of a longitudinal median plane (P) of the filter, and they extend in a plane orthogonal to the longitudinal median plane (P), or in a stepped manner in the longitudinal direction in planes that are parallel to one another and orthogonal to the longitudinal median plane (P). All of the filtering components are arranged on the electrical conduction bars in the filtering portion. Thus, the invention provides an electromagnetic compatibility filter that ensures longitudinal alignment of the components of the filter, thereby limiting coupling between certain filtering components. Furthermore, the arrangement of the conduction bars makes it possible to limit the thickness of the EMC filter.
The invention relates to an end shield (10) for a rotor of a rotary electric machine rotating about an axis of rotation X, the end shield comprising an inner face (12) facing a rotor mass (4), an outer face (11) opposite the inner face, a radially outer edge face (14) extending between the inner face and the outer face, and a central bore (13), the end shield comprising: - at least two cavities (15) formed in the outer face of the end shield and distributed circumferentially around the central bore, each cavity being bounded at least by a circumferential border (17) that runs along the edge face of the end shield; and - at least one fin (16) separating two consecutive cavities, the fin extending substantially radially and being curved when the end shield is viewed along the axis of rotation X.
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
H02K 1/32 - Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
Rotor (30) for a rotary electric machine, comprising a rotor body (33) comprising metal sheets stacked one on top of the other, the rotor body (33) comprising a plurality of housings (10) for receiving one or more permanent magnets defining poles of the rotor, the housings of a pole being arranged in at least one first (11) and one second (12) row of housings, the first row of housings comprising three U-shaped housings, with a central housing and two side housings, a length (L2) of a larger rectangle enclosed in the central housing being equal to +/−20% of the length (L1) of the largest rectangle enclosed in a side housing, at least one of the side housings, in particular the two side housings of the first row, comprising a recess (15) which extends from the side housing to the central housing.
The invention relates to a coil intended to be inserted in into a first and a second slot of a stator, the coil being wound in a plurality of successive turns, each turn comprising:—a first half-turn comprising a first slot portion configured to be inserted in into the first slot of the stator,—a second half-turn comprising a second slot portion configured to be inserted in into the second slot of the stator, the second half-turns each being connected to the first half-turn of the same turn and to the first half-turn of the next turn by junction portions on each side of the first and second slot portions, the junction portions of the coil stacking along at least two juxtaposed heads extending in mutually parallel junction planes.
H02K 15/04 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines
H02K 3/28 - Layout of windings or of connections between windings
23.
END SHIELD AND ROTOR FOR A ROTARY ELECTRIC MACHINE
The present invention relates to an end shield (10) for a rotary electric machine, including one or more feed channels (12) for feeding a coolant supplied from a channel formed in a rotor lamination stack (8) or in a shaft of the rotor (1) or between the rotor lamination stack and the shaft, wherein at least one feed channel (12) includes a cross-sectional constriction (15), the cross-section of the feed channel decreasing and then increasing in a radial direction relative to the rotational axis (X) of the machine.
H02K 1/32 - Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
The invention relates to a rotor (1) for a rotary electric machine, comprising a rotor mass (3) and permanent magnets inserted into the latter, the rotor mass being composed of a plurality of packs (5) arranged consecutively along an axis of rotation (X) of the rotor, two consecutive packs being in particular offset angularly about the axis of rotation (X) of the rotor by an elementary angle (ô) with respect to one another, at least one pack (5) bearing a mark (10) indicating its angular orientation about the axis of rotation (X) of the rotor.
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
Rotor (30) for a rotary electric machine, including:
at least one permanent magnet (1) having, in cross section, at least one large side (2a) and at least one small side (3a),
a rotor body (33) including stacked sheets, the rotor body (33) including at least one recess (4) receiving the permanent magnet (1), the recess (4) being delimited by at least one face (5a) opposite the large side (2a) of the permanent magnet (1),
at least one sheet (6) including at least one deformable tongue (7) connecting to the face (5a) of the recess (4) and extending into the recess (4), the deformable tongue (7) being angled and including a foldable portion (8) configured to be pressed against the small side (3a) of the permanent magnet (1).
The invention relates to a device for making an electrical connection between an electric motor (2) integrated into a casing (4) and an inverter (6), comprising at least one busbar (110), at least one signal-conducting element (120) and an interface segment (130) intended to obturate an aperture (47) in a wall (46) of the casing (4). The at least one signal-conducting element (120) comprises an elongate metal pin and the interface segment (130) is formed by a plastic part over-moulded around the at least one busbar (110) and the at least one signal-conducting element (120).
H02K 11/33 - Drive circuits, e.g. power electronics
H01R 13/405 - Securing in non-demountable manner, e.g. moulding, riveting
H01R 43/24 - Assembling by moulding on contact members
H01R 13/66 - Structural association with built-in electrical component
H02K 11/27 - Devices for sensing current, or actuated thereby
H02K 3/50 - Fastening of winding heads, equalising connectors, or connections thereto
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
H01R 13/52 - Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
The invention relates to a connectors guide for an inverter comprising at least two power modules (28), namely at least a first power module and a second power module, the connectors guide (1) comprising a substantially flat rigid body (2) in which orifices (5) are formed for the passage of control pins (8) for the power modules (28), said orifices (5) being calibrated and positioned in such a way as to conform to the position and orientation of said control pins (8). The body of the connectors guide comprises a so-called intermediate portion (13) which is intended to be positioned between the first power module and the second power module, the intermediate portion (13) comprising a housing (15) suitable for accepting a temperature sensor (16). The connectors guide thus makes it possible to ensure that the power modules control pins are correctly positioned while at the same time also ensuring the positioning and retention of the temperature sensor.
The present invention relates to an end shield (10) for a rotary electric machine, including one or more feed channels (12) for feeding a coolant supplied from a channel formed in a rotor lamination stack (8) or in a shaft of the rotor or between the rotor lamination stack and the shaft, wherein at least one feed channel (12) has a spray portion (18) for spraying the coolant, said spray portion (18) being placed in the last two thirds of the feed channel (12), when considered in the direction in which the coolant circulates.
The invention relates to a rotating electric machine comprising: a casing, a stator (1) comprising a stator mass (2), the stator (1) being disposed in the casing, in particular by shrink-fitting, one or more resilient strips (4) mounted on one of the stator (1) or the casing on the surface thereof, so as to face the other of the stator (1) or the casing, an angular extent of at least one resilient strip (4) about a longitudinal axis of the machine being strictly less than 360°, and a length (L) of said at least one resilient strip (4) being strictly less than a length of the stator mass (2).
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
H02K 5/04 - Casings or enclosures characterised by the shape, form or construction thereof
The invention relates to a rotary electric machine (1) comprising: - a casing (2); - a stator (3) comprising electrical stator winding conductors, the stator being arranged in the casing, in particular by means of shrink-fitting; - an inverter; - a phase connector (4) comprising an insulating support (40) carrying electrical phase connector conductors having connection lugs for connecting to the stator winding conductors (41) and/or to a bus of the inverter (42); and - one or more attachment spacers (5) for attaching the phase connector to the casing.
Rotor (30) for a rotary electric machine, comprising: - at least one permanent magnet (1), - a rotor mass (33) comprising laminations stacked on top of one another, comprising at least one housing (4) accommodating the permanent magnet (1), the housing (4) being delimited by at least one large face (5a) facing a long side (2a) of the permanent magnet (1), at least one lamination (6) comprising at least two cutouts (10) between them creating at least one tab (12) meeting said large face (5a) of the housing (4) and extending into the housing (4), notably in the direction of the air gap, the lamination (6) comprising one or more punchings (15) formed in the tab or tabs (12) and enabling the permanent magnet (1) to be held against an opposite face (6b) of the housing (4).
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
32.
METHOD FOR CONTROLLING AN INVERTER COMPRISING SELECTING A SAFETY MODE
The present invention relates to a method for controlling an inverter that controls an electric machine and that is controlled by a first control device in a nominal operating mode and by a second control device in order to apply a safety operating mode. The safety mode is chosen from: - an ASC operating mode in which phases of the electric machine (5) are short-circuited; and - an FW operating mode that puts the electric machine (5) into freewheeling mode. The method comprises, in order to select the safety mode to be applied: determining the voltage on a high-voltage bus (UHVDC), and - if the voltage on the high-voltage bus (UHVDC) is lower than a first voltage threshold (Uthi), the FW mode is selected (S4), - if the voltage on the high-voltage bus (UHVDC) is greater than a second voltage threshold (Uth2) that is greater than the first voltage threshold (Uthi), the ASC mode is selected (S6), - if the voltage is between the first voltage threshold (Uthi) and the second voltage threshold (Uta), a parameter representative of the ability of the electric machine to inject power onto said high-voltage bus in a risk-free manner is determined; and - if the parameter is greater than or equal to a threshold value, the ASC mode is selected (S8); - if the parameter is lower than the threshold value, the FW mode is selected (S9).
H02H 3/02 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection Details
H02H 7/08 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
H02H 7/122 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers for static converters or rectifiers for inverters, i.e. DC/AC converters
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H02P 3/18 - Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an AC motor
A stator (2) for a rotary electric machine (1), comprising:—a radially interior ring (25) comprising teeth (23) and slots (21) opening radially towards the outside and extending between the teeth, bridges of material (27) connecting two adjacent teeth to their base and defining the bottoms of the slots between these teeth,—coils (22) arranged in the slots, having electrical conductors arranged in an ordered fashion in the slots (21), and—a radially outer yoke (29) attached in contact with the ring, the yoke being formed of assembled sectors (30).
The invention relates to a rotor of an electric machine, rotating about an axis of rotation X, the rotor comprising: - a shaft (9) arranged along the axis of rotation; - a rotor mass (3) disposed around the shaft, comprising: - a central bore (4); - at least two openings (5) provided in the rotor mass and distributed circumferentially around the central bore, the two openings leaving a radial strip (6) therebetween, the radial strip having a smaller width, at least one bridge of material (7) being provided between an opening and the central bore, the bridge of material being of variable width and having a greater width, and the ratio between the smaller width of the radial strip and the larger width of the bridge of material being between 0.75 and 1.25.
H02K 1/28 - Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
F16D 1/072 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end non-disconnectable involving plastic deformation
F16D 1/08 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hubCouplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with hub and longitudinal key
Method for impregnating a stator of a rotary electric machine comprising slots, electrical conductors accommodated in the slots, at least two electrical conductors being electrically connected by an electrical connection, the method comprising the following steps: a) heating the stator to a first temperature; b) applying a resin close to the slots of the stator; c) heating the stator to a second temperature; d) applying the resin to the one or more electrical connections of the electrical conductors, application steps b) and d) being achieved through flow of the resin.
H02K 3/34 - Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
36.
METHOD FOR OVERVOLTAGE PROTECTION IN A SYSTEM COMPRISING A BATTERY, AN INVERTER AND AN ELECTRICAL MACHINE
The invention relates to a method for overvoltage protection in a system comprising a battery linked to an inverter by a high-voltage bus and an electrical machine controlled by the inverter. While the system is in a regeneration mode in which the electrical machine operates as a generator to recharge the battery, the method comprises: determining the voltage on the high-voltage bus; comparing the determined voltage with a voltage threshold (Uth), and switching the inverter to a protection mode suitable for lowering the voltage (S6) when the determined voltage exceeds said voltage threshold. In the invention, the voltage threshold is variable depending on a current state of charge of the battery. The invention also relates to a corresponding system suitable for carrying out this method.
H02P 9/10 - Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
37.
INVERTER COMPRISING A DEVICE FOR THE MUTUAL ALIGNMENT OF THREE COMPONENTS
The invention relates to an inverter comprising a casing, a circuit board (3), a power module, a connector guide (10) which is configured to keep male connectors of the power module in a given orientation, and a busbar system (6) connected to the power module (4) and comprising a ferromagnetic element (14) that is suitable for interacting with a current sensor (9) that is rigidly connected to the circuit board (3). The inverter (1) comprises two elongate centering elements such as centering fingers or pins (11) which extend in parallel and are arranged at a distance from one another, and are rigidly connected to a reference part of the inverter. In this instance, the two elongate centering elements pass through the circuit board (3), the connector guide (10) and the busbar system (6), with the casing (2) or part of the casing (2) forming the reference part. This ensures that the circuit board (3), the connector guide (10) and the busbar system (6) are correctly aligned with one another.
Disclosed is a stator (1) for a rotating electric machine, comprising a stator mass (2) formed by a stack of sheets, the sheets comprising teeth (4) forming notches (3) therebetween which are symmetrical relative to a radial axis of the notch, and electric conductors accommodated in the notches (3), at least one of the sheets of the stator mass (2) having a plurality of slots (10) formed in the teeth (4) at the end thereof facing the air gap (E), the stator mass being composed of a plurality of packs (2a, 2b) of sheets arranged consecutively along a longitudinal axis X of the stator, the slots (10) in the sheets of a first pack (2a) being angularly offset relative to the slots in the sheets of a second pack (2b).
H02K 29/03 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
The invention relates to an end shield (10) for a rotor of an electric machine rotating about an axis of rotation X, comprising an inner face (11) facing a rotor mass (4), an outer face (12) opposite the inner face, a radially outer edge (17) extending between the inner face and the outer face, and a central bore (13), the end shield comprising: - one or more through-openings (14) between the inner face and the outer face; and - at least one fin (15) extending at least partially into the opening.
H02K 1/32 - Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 1/28 - Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
H02K 9/08 - Arrangements for cooling or ventilating by gaseous cooling medium circulating wholly within the machine casing
40.
MANUFACTURING METHOD AND STATOR OF A ROTATING ELECTRICAL MACHINE WITH ASYMMETRIC WINDING
The invention relates to a method for manufacturing a stator (2) of a rotating electrical machine (1), comprising the following steps: (a) providing a stator mass (25), the stator mass (25) having slots (21) arranged between teeth (23), electrical conductors (22) being received in the slots (21), at least some of the electrical conductors being in the form of a U-shaped or I-shaped pin, each having inner legs (22e) and outer legs (22f), at least one of the inner legs (22e) and outer legs (22f) of the electrical conductors (22) extending out of the slots by a welding portion; (b) circumferentially offsetting the outer legs (22f) of the electrical conductors by half a tooth pitch with respect to the inner legs (22e); and (c) radially outwardly offsetting the outer legs (22f) of some electrical conductors, in particular the outer legs of the phase input and/or output electrical conductors.
Rotating electrical machine (1) extending along a longitudinal axis X, having a rotor (2) and a wound stator (3) having winding heads (30), the rotor (2) and the stator (3) being arranged in a casing (4) having an internal wall, the rotor (2) having at least one channel for distribution of a cooling fluid, the machine having at least one guide device (10) arranged radially between the winding heads of the stator and the internal wall of the casing, the guide device (10) being configured to orient the cooling fluid ejected from the rotor, particularly by centrifugal force, to the winding heads of the stator.
The invention relates to a stator (1) for a rotary electric machine, comprising a stator mass (2) formed by a stack of metal sheets, comprising slots (3), and electrical conductors (10) housed in the slots, at least some of the electrical conductors, or even a majority of the electrical conductors, better still all the electrical conductors, being formed as U-shaped or I-shaped pins, the stator mass (3) consisting of a plurality of packs (5) arranged consecutively along a longitudinal axis (X) of the stator, the metal sheets of at least one pack, better still of all the packs, being angularly offset with respect to one another about the longitudinal axis (X) of the stator, and two consecutive packs (5) being separated by a spacer (20).
H02K 1/20 - Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
43.
STATOR FOR A ROTARY ELECTRICAL MACHINE AND MANUFACTURING METHOD
The invention relates to a method for manufacturing a stator (1) for a rotary electrical machine, comprising the following steps: (a) providing a set of electrical conductors (10), in particular in the form of a pin, and a plurality of stacks (5) of metal sheets; (b) inserting said electrical conductors into the stacks of metal sheets (5); and (c) twisting the electrical conductors (10), in particular in one or more directions, so as to cause the stacks of metal sheets to be twisted.
H02K 1/20 - Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
The invention relates to a rotary electric machine with liquid cooling, comprising a rotor with permanent magnets and a wound stator, the rotor comprising: (i) at least one rotor sheet stack, (ii) magnets housed in the sheet stack, and (iii) front and rear flanges adjacent to the sheet stack, the machine being configured to enable a cross-flow of the cooling liquid within the rotor sheet stack.
H02K 1/32 - Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
H02K 21/14 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
45.
ROTARY ELECTRIC MACHINE STATOR WITH ASYMMETRIC WINDING
Disclosed is a stator (2) comprising a stator body (25) having notches (21) formed between teeth (23), electrical conductors (22) being housed in the notches (21), at least one part of the electrical conductors being in the form of a U-shaped pin, each comprising first (22c) and second (22f) axially extending legs in the first (A) and second (R) notches, respectively, at least one of the first (22e) and second 22f) legs of the electrical conductors (22) extending out of the notches via an inclined welding portion, at least one part of the electrical conductors each having a welding portion, innermost with respect to the longitudinal axis of the stator, the innermost welding portions being inclined with the same inclination with respect to the plane perpendicular to the longitudinal axis of the stator.
Connector for rotary electric machine stator, the connector comprising a set of electrical conductors having tabs for connecting to stator winding conductors and/or to a stator power supply bus, each electrical conductor being at least partially surrounded by one or more insulating supports, at least one insulating support bearing at least one anchoring finger projecting along an axis of elongation Y, the anchoring fingers being configured in such a way that it is possible to turn around them in a plane perpendicular to their axis of elongation Y.
A rotor (30) for a rotary electric machine, comprising a rotor mass (33) comprising laminations stacked one on top of the other, the rotor mass (33) comprising a plurality of housings (10), at least some of the housings, or even all of the housings, receiving one or more permanent magnets (1) defining poles of the rotor, the housings of a pole being arranged in at least a first row (11) and a second row (12) of housings which are not parallel to one another, the first row (11) of housings comprising at least three housings arranged in a U shape, with at least one central housing and two lateral housings, the central housing of the first row being able to do without a permanent magnet, the second row (12) of housings comprising housings arranged in a V shape, in particular two housings arranged in a V shape.
The invention relates to an electrical conductor for a stator of a rotary electric machine, in the form of a U-shaped hairpin, having:- first and second legs intended to extend axially in a first notch A and a second notch R, respectively, of the stator,- a bundle portion connected to the first and second legs of the electrical conductor in each case by an oblique portion,- the two oblique portions being in the form of a helical portion.
H02K 3/14 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots with transposed conductors, e.g. twisted conductors
H02K 15/04 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines
49.
METHOD FOR SELECTING A CHOPPING FREQUENCY OF AN INVERTER CONTROLLING AN ELECTRIC MACHINE, AND CORRESPONDING DEVICE
The invention relates to a method for selecting a chopping frequency for application thereof to an inverter controlling a rotating electric machine, wherein the chopping frequency is chosen from among multiple predetermined frequencies depending on the position, in a map, of a current operating point of the assembly formed by the electric machine and the inverter, said map having at least the rotational speed (N) of the electric machine or the frequency (Fe) of the electric current applied thereto as parameter. In at least part of the map, the chopping frequency is furthermore chosen based on a parameter representative of a thermal condition of the electronic switches contained in the inverter. The invention furthermore relates to a method for controlling a corresponding inverter, and to a device implementing this method. The invention is preferably applied to an electric motor vehicle.
Rotor (30) for a rotary electric machine, comprising a rotor body (33) comprising metal sheets stacked one on top of the other, the rotor body (33) comprising a plurality of housings (10) for receiving one or more permanent magnets defining poles of the rotor, the housings of a pole being arranged in at least one first (11) and one second (12) row of housings, the first row of housings comprising three U-shaped housings, with a central housing and two side housings, a length (L2) of a larger rectangle enclosed in the central housing being equal to +/- 20% of the length (L1) of the largest rectangle enclosed in a side housing, at least one of the side housings, in particular the two side housings of the first row, comprising a recess (15) which extends from the side housing to the central housing.
Stator (2) for a rotary electric machine (1), comprising a stator mass (25) comprising slots (21), electrical conductors (22) accommodated in the slots (21) forming a multiphase winding having at least a first phase (a) and a second phase (b), an input electrical conductor (A) of the first phase (a) being located in a first slot (slot number 1), one or more electrical conductors of the second phase (b) being located in a second slot (slot number 2), the second slot immediately following the first slot when going circumferentially around the axis of rotation of the machine, in the direction of flow of the electric current around the axis of rotation of the machine.
The invention relates to a coil (20) intended to be inserted in a first and a second notch of a stator (60), the coil (20) being wound in a plurality of successive turns, each turn comprising: - a first half-turn (32a) comprising a first notch portion (34a) configured to be inserted in the first notch of the stator, - a second half-turn (32b) comprising a second notch portion (34b) configured to be inserted in the second notch of the stator, the second half-turns (32b) each being connected to the first half-turn (32a) of the same turn and to the first half-turn (32a) of the following turn by junction portions (40) on each side of the first and second notch portions (34a, 34b), the junction portions (40) of the coil stacking along at least two juxtaposed heads (26a, 26b, 26c, 26d, 26e) extending in mutually parallel junction planes.
H02K 3/12 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
H02K 15/04 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines
H02K 15/00 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
H02K 15/06 - Embedding prefabricated windings in the machines
53.
END SHIELD AND ROTOR FOR A ROTARY ELECTRIC MACHINE
The present invention relates to an end shield (10) for a rotary electric machine, comprising one or more feed channels (12) for feeding a coolant supplied from a channel formed in a rotor lamination stack (8) or in a shaft of the rotor or between the rotor lamination stack and the shaft, wherein at least one feed channel (12) has a spray portion (18) for spraying the coolant, said spray portion (18) being placed in the last two thirds of the feed channel (12), when considered in the direction in which the coolant circulates. Figure for the abstract: Fig. 5
The present invention relates to an end shield (10) for a rotary electric machine, comprising one or more feed channels (12) for feeding a coolant supplied from a channel formed in a rotor lamination stack (8) or in a shaft of the rotor or between the rotor lamination stack and the shaft, wherein at least one feed channel (12) comprises a cross-sectional constriction (15), the cross-section of the feed channel decreasing and then increasing in a radial direction relative to the rotational axis (X) of the machine.
Disclosed is a flange (10) of a rotor (1) of a rotary electrical machine rotating about an axis of rotation X, comprising an inner face (101) turned towards a rotor body (3), an outer face (102) opposite the inner face (101), a radially external edge (103) extending between the inner face (101) and the outer face (102), and a central bore (104), the flange (10) comprising at least one supply duct (12) for a coolant, the supply duct having an inlet (12a) on the inner face (101) of the flange and an outlet (12b) on the edge and/or on the outer face of the flange, the outlet (12b) being closer to the edge than the central bore of the flange, the inlet (12a) of the supply duct being closer to the axis of rotation X than the outlet (12b), the supply duct (12) extending along a substantially straight elongation axis Y.
A stator for a rotating electrical machine comprises a stator mass comprising teeth and notches between the teeth, each of the notches being, on the air gap side, completely closed, electrical conductors being housed in the notches, the electrical conductors forming a fractional winding, for which the ratio q defined by q=Ne/(2 pm) is written as an irreducible fraction z/n, z and n being two non-zero integers, n being different from 1, wherein Ne is the number of stator notches, m the number of winding phases and p the number of pairs of stator poles.
H02K 29/03 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
H02K 3/28 - Layout of windings or of connections between windings
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
The invention relates to a method for controlling an inverter connected to an electric traction motor of a vehicle, performed by a control device supplied by a so-called low-voltage power supply, and for applying a safety operating mode by an auxiliary power supply comprising an electrical capacitor. When a loss of the low-voltage power supply occurs, the control device applies either a safety mode ASC associated with active discharge of the electrical capacitor, or a freewheeling mode FW. According to the invention, when the ASC mode is applied to the inverter, if the input voltage of the auxiliary power supply drops below a given minimum voltage, which is greater than a minimum operating voltage of the control device, then the FW operating mode is applied to the inverter, and when the FW mode is applied to the inverter, if the input voltage of the auxiliary power supply rises to a predefined voltage threshold, then the ASC operating mode is applied to the inverter. The invention also relates to a corresponding system.
H02H 7/08 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
B60L 3/00 - Electric devices on electrically-propelled vehicles for safety purposesMonitoring operating variables, e.g. speed, deceleration or energy consumption
H02H 7/122 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers for static converters or rectifiers for inverters, i.e. DC/AC converters
H02P 3/18 - Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an AC motor
58.
Rotating electric machine having an improved annular cooling chamber
The rotating electric machine (1) having a housing comprising first (14) and second (15) clamp members and an inner face, a stator comprising a stator body (41) clamped between the first and second clamp members and having an outer face extending opposite the inner face together defining an annular cooling chamber (21) surrounding the stator body, the stator body comprising a longitudinal stack of stator sheets (410), each stator pack of which comprises an annular core having an outer circumference and at least two radially centrifugal protuberances projecting from the outer circumference of the annular core, in the annular cooling chamber, and diametrically opposite one another, the stator sheets of the longitudinal stack being identical and two adjacent stator sheet of the longitudinal stack being angularly offset from each other such that the respective protuberances thereof do not extend opposite one another.
The rotary electric machine (1) comprises a casing (10), a stator (40) comprising a stator body (41) secured within the casing and comprising first (411) and second (412) longitudinal end faces, notches (44) arranged and extending longitudinally within the stator body between the first and second longitudinal end faces, a coil passing longitudinally through the stator body through the notches and comprising first (43) and second (42) coil head assemblies extending in projection from at least one of the first and second longitudinal end faces of the stator body, a first chamber (15) in the shape of a ring portion arranged around the first coil head assembly and a second chamber (14) in the shape of a ring portion arranged around the second coil head assembly, the first and second chambers being in fluid communication with one another by the notches, one among the first and second chambers being a coolant inlet chamber and the other among the first and second chambers being a coolant discharge chamber such that a flow of coolant between the first and second annular chambers is forced into the notches while the rotary electric machine is in operation.
H02K 3/24 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Rotor (30) for a rotary electric machine, comprising: - at least one permanent magnet (1) having, in cross-section, at least one long side (2a) and at least one short side (3a), - a rotor body (33) comprising stacked sheets, the rotor body (33) comprising at least one recess (4) receiving the permanent magnet (1), the recess (4) being delimited by at least one face (5a) opposite the large side (2a) of the permanent magnet (1), at least one sheet (6) comprising at least one deformable tongue (7) connecting to the face (5a) of the recess (4) and extending into the recess (4), the deformable tongue (7) being angled and comprising a foldable portion (8) configured to be pressed against the small side (3a) of the permanent magnet (1).
The invention relates to a rotating electrical machine (1) comprising a housing (10) including two bearings (52, 53), a rotor shaft (5) mounted to rotate freely in the housing via the bearings, a rotor (6) clamped to the rotor shaft so as to rotate the rotor shaft and comprising first (62) and second (63) axial end faces, and a cooling circuit comprising a coolant supply duct (51) arranged coaxially in the rotor shaft, and a radially oriented feed duct (54) arranged in the rotor shaft and in fluid communication with the supply duct and the rotor, characterized in that the cooling circuit further comprises a cooling chamber (61) in fluid communication with the feed duct, extending axially between the rotor and the rotor shaft, opening onto the first and second axial end faces and delimited radially by an angular portion of an external surface (55) of the rotor shaft and an angular portion (65) of an internal surface of the rotor, the two portions extending opposite and at a distance from one another.
H02K 1/28 - Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
H02K 1/32 - Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
A stator for a rotating electrical machine comprises a stator mass comprising notches housing the electrical conductors, wherein at least one portion of the electrical conductors, if not the majority, are in the form of a U-shaped pin, and each electrical conductor comprises first and second legs respectively extending axially in first and second notches, each electrical conductor comprising several strands, the strands of the first leg of an electrical conductor being arranged in the first notch in a radially reverse order of the strands of the second leg of the same electrical conductor in the second notch.
Rotary electric machine comprising: - a stator comprising teeth, slots between the teeth, and electrical conductors housed in the slots, and - a rotor comprising a rotor body and permanent magnets inserted into said body, the rotor body being composed of a plurality of sheaves placed consecutively along an axis of rotation of the rotor. The sheaves are angularly offset by an angle δ comprised in the following interval: 360º/(p*n*(he+2*k)) ≤ δ ≤ 360º/(p*n*(he-2*k)). For a fractional winding stator with Ns = 63 slots, a 6-pole rotor (p=3), the harmonic is he= Ns/p=21 and with 2 ≤ n ≤ 8 being the number of sheaves offset in the same direction and k being equal to 0, 1 or 2, the offset angle is 0.6° ≤ δ ≤ 3.5°.
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
H02K 3/28 - Layout of windings or of connections between windings
H02K 29/03 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
H02K 21/14 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
A stator (2) for a rotary electric machine (1), comprising: - a radially interior ring (25) comprising teeth (23) and slots (21) opening radially towards the outside and extending between the teeth, bridges of material (27) connecting two adjacent teeth to their base and defining the bottoms of the slots between these teeth, - coils (22) arranged in the slots, having electrical conductors arranged in an ordered fashion in the slots (21), and - a radially outer yoke (29) attached in contact with the ring, the yoke being formed of assembled sectors (30).
Method for impregnating a stator of a rotary electric machine comprising slots, electrical conductors accommodated in the slots, at least two electrical conductors being electrically connected by an electrical connection, the method comprising the following steps: a) heating the stator to a first temperature; b) applying a resin close to the slots of the stator; c) heating the stator to a second temperature; d) applying the resin to the one or more electrical connections of the electrical conductors, application steps b) and d) being achieved through flow of the resin.
H02K 15/12 - Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
H02K 3/34 - Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
H02K 3/38 - Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto
The invention relates to a stator comprising: − a ring (25) comprising: o teeth (23) that form notches (21) between them that are radially open towards the outside, and o material bridges (27) each connecting two adjacent teeth (23) at their base on the air gap (46) side and defining the bottom of the notch (35) between these teeth (23), − electrical conductors (34) arranged in the notches (21) of the ring (25), the electrical conductors (34) each being covered with an insulating coating (70) comprising at least one polymer, the insulating coatings (70) being directly in contact with the walls (33, 35, 36) of the notches (21), and − a yoke (29) fitted on the ring (25).
H02K 3/30 - Windings characterised by the insulating material
H02K 3/34 - Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
Disclosed is a connector (1) for an external stator, comprising: a. an insulating support (10), b. an assembly of four electrical conductors (20, 30, 40, 50) having connection pads to the stator winding conductors and to a power supply bus of the stator, carried by the insulating support, this assembly of conductors having at least one neutral conductor (20) oriented parallel to the axis of the stator and at least one conductor (30; 50) oriented perpendicular to the axis of the stator.
The invention relates to a rotor (1) for a rotating electrical machine, the rotor comprising a rotor mass comprising: - a plurality of pole parts (5) each made up of a stack of pole plates (6a, 6b), - a hub (7) made up of a stack of hub plates (8), pole plates (6a, 6b) and hub plates (8) being arranged alternately in at least one longitudinal section of the rotor mass of the rotor, at least one pole plate following a hub plate when moving along a longitudinal axis parallel to an axis of rotation of the machine.
Disclosed is a rotor (1) of an electric machine, said rotor rotating about an axis of rotation (X) and comprising: - a shaft (5) arranged on the axis of rotation (X), - a rotor mass (3) that extends along the axis of rotation (X) and is arranged around the shaft, the rotor having at least one groove (12) formed in the shaft (5) and at least one tab (14) formed on the rotor mass (3), the tab interacting with the groove for transmitting torque between the rotor mass and the shaft, the at least one tab (14) being planed when the rotor mass (3) is inserted onto the shaft (5).
H02K 1/28 - Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
Disclosed is a rotor (1) of an electric machine, said rotor rotating about an axis of rotation (X) and comprising: a shaft (5) that is arranged on the axis of rotation (X) and has an outer surface, wherein the outer surface has at least one flat portion (21) and at least one cylindrical region (22); a rotor mass (3) which extends along the axis of rotation (X), is arranged about the shaft (5) and comprises at least one tab (20) interacting with the flat portion (21) of the shaft (5), said at least one tab (20) undergoing plastic deformation when the rotor mass (3) is inserted onto the shaft (5).
Disclosed is a device for holding one or more electrical conductors of a stator of a rotating electrical machine, the device defining one or more internal spaces adapted to receive one or more electrical conductors to be welded, the device being intended to retain, in each interior space, the fused material from a step of welding said electrical conductors.
The invention relates to a rotary liquid-cooled electrical machine comprising a rotor (10) with permanent magnets and a wound stator, comprising: • i. at least one rotor lamination stack (11), • ii. at least one flange (30) adjacent to the stack (11). The machine comprises a passage for circulation (32) of the cooling liquid, the passage being formed in the thickness of the flange (30) and opening into outlets (34) arranged at the periphery thereof. Each outlet is supplied by at least one respective supply channel and has a section available for flow of the liquid which is greater than that of at least one upstream portion of the channel.
H02K 1/32 - Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 9/20 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil wherein the cooling medium vaporises within the machine casing
H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
H02K 1/20 - Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
73.
ROTARY ELECTRIC MACHINE STATOR WITH ASYMMETRIC WINDING
Disclosed is a stator (2) comprising a stator body (25) having notches (21) formed between teeth (23), electrical conductors (22) being housed in the notches (21), at least one part of the electrical conductors being in the form of a U-shaped pin, each comprising first (22e) and second (22f) axially extending legs in the first (A) and second (R) notches respectively, at least one of the first (22e) and second (22f) legs of the electrical conductors (22) extending out of the notches via an inclined welding portion, at least one part of the electrical conductors each having a welding portion, innermost with respect to the longitudinal axis of the stator, the innermost welding portions being inclined with the same inclination with respect to the plane perpendicular to the longitudinal axis of the stator.
H02K 3/50 - Fastening of winding heads, equalising connectors, or connections thereto
H02K 15/00 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
H02K 15/04 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines
The invention relates to a rotary electric machine with liquid cooling, comprising a rotor with permanent magnets and a wound stator, the rotor comprising: (i) at least one rotor sheet stack, (ii) magnets housed in the sheet stack, and (iii) front and rear flanges adjacent to the sheet stack, the machine being configured to enable a cross-flow of the cooling liquid within the rotor sheet stack.
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
75.
DEVICE FOR COOLING SEGMENTED ELECTRICAL CONDUCTORS
The invention relates to a cooling device (3) for cooling one or more electrical conductors (22) of a stator (2) of a rotating electrical machine (1), said device (3) comprising at least one cooling circuit (31) for a coolant (32), intended to be disposed in thermal contact with at least part of the electrical conductor(s) (22) during a step involving the welding of said electrical conductors.
Disclosed is a rotor (1) for an electrical machine, rotating about an axis of rotation (X), the rotor comprising: - a shaft (5) arranged on the axis of rotation (X), - a rotor body (3) extending along the axis of rotation (X) and arranged around the shaft, the rotor comprising means (10) for transmitting torque between the rotor body and the shaft, the torque transmission means comprising at least one groove (12) and at least two tabs (14), each tab cooperating with the groove, the tabs (14) undergoing plastic deformation when the rotor body (3) is inserted onto the shaft (5).
Stator (2) for a rotary electric machine (1), comprising a stator mass (25) comprising slots (21), electrical conductors (22) accommodated in the slots (21) forming a multiphase winding having at least a first phase (a) and a second phase (b), an input electrical conductor (A) of the first phase (a) being located in a first slot (slot number 1), one or more electrical conductors of the second phase (b) being located in a second slot (slot number 2), the second slot immediately following the first slot when going circumferentially around the axis of rotation of the machine, in the direction of flow of the electric current around the axis of rotation of the machine.
Electrical conductor, in particular in the form of a U-shaped or I-shaped pin, intended to be inserted into the notches (21) of a stator (2) of an electrical rotating machine (1), the electrical conductor (22) comprising a plurality of strands (32), at least one strand being flat, at least one of the strands being at least partially or completely covered with a layer of an adhesive material, in particular a thermo-adhesive material (321), the strand(s) (32a) which are at least partially or completely covered with a layer of adhesive material (321) being arranged between two strands (32b, 32b') which do not have such a layer.
H02K 3/12 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
H02K 15/04 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines
H01F 27/30 - Fastening or clamping coils, windings, or parts thereof togetherFastening or mounting coils or windings on core, casing, or other support
Rotating electric machine (1) comprising: - a housing comprising a body and at least one closing flange (5) attached to the body, the closing flange having an access opening (6) and a removable hatch for closing said opening, - a temperature sensor (40), - a stator attached to the body of the housing, comprising a phase connector (12) which comprises metal elements connected to conductors of the stator windings, said metal elements being retained by an insulating support, the phase connector having tabs (17) for connection to a supply bus, the connector (12) being made with an area for receiving the temperature sensor which is arranged relative to the access opening (6) such that the temperature probe (40) can be mounted on said reception area through the access opening (6) of the closing flange (5).
The invention relates to a method for welding a plurality of strands (33) of one or more electrical conductors (22), comprising at least the following steps: (a) preparing the strands (33) to be welded such that at least the free ends (22a) of adjacent strands are axially offset by a non-zero distance d. (b) melting the free ends (22a) of the strands thus arranged in order to weld them without addition of material.
H01R 43/02 - Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
The assembly comprises first (11) and second (12) parts of a lost-foam model, respectively having: • first and second bonding surfaces arranged so as to be bonded together; and • first (21) and second (22) portions of a duct made in the lost-foam model, the first and second portions leading out onto the first and second bonding surfaces, respectively, and being in the continuation of one another, at least one of the first and second portions having a local cross-sectional widening (S', 16) where it leads out onto the bonding surface associated with the portion in question.
Disclosed is a connection device (1) for a stator, comprising: Peripheral metal elements (20) each comprising at least one connection lug (22) for connection to at least one stator winding conductor (E), this lug having a groove (26) that is radially open towards the outside in order to receive the conductor, this groove (26) being at least partially delimited by a flanged edge (120) that is preferably oriented radially, at least some of these peripheral metal elements (20) further comprising at least one connection lug (23) for connection to a power supply bus of the stator, at least some of the metal elements (20) comprising a curved portion (21) connecting the connection lugs to each other, an insulating support (10) for holding the metal elements, preferably comprising recesses for receiving the metal elements.
The rotary electric machine (1) comprises a casing (10) comprising two bearings (52, 53), a rotor shaft (5) mounted with the freedom to rotate in the casing via the bearings, a rotor (6) mounted tightly on the rotor shaft so as to drive the rotor shaft in rotation and comprising first (62) and second axial end faces, the rotor comprising a cutout (9) housing a permanent magnet (90) extending axially between and opening onto the first and second axial end faces, and a cooling circuit comprising a coolant conveying duct (51) formed coaxially inside the rotor shaft, and a supply duct (54) oriented radially and formed in the rotor shaft and in fluidic communication with the conveying duct and the rotor, the rotor comprising two rotor blocks (61) and the cooling circuit further comprising a hollow distribution spacer (8) positioned axially so that it is sandwiched between the two rotor blocks and in fluidic communication with the supply duct and the housing cutout.
The rotary electric machine (1) comprises a casing (10), a stator (40) comprising a stator body (41) secured within the casing and comprising first (411) and second (412) longitudinal end faces, notches (44) arranged and extending longitudinally within the stator body between the first and second longitudinal end faces, a coil passing longitudinally through the stator body through the notches and comprising first (43) and second (42) coil head assemblies extending in projection from at least one of the first and second longitudinal end faces of the stator body, a first chamber (15) in the shape of ring portion arranged around the first coil head assembly and a second chamber (14) in the shape of a ring portion arranged around the second coil head assembly, the first and second chambers being in fluid communication with one another by the notches, one among the first and second chambers being a coolant inlet chamber and the other among the first and second chambers being a coolant discharge chamber such that a flow of coolant between the first and second annular chambers is forced into the notches while the rotary electric machine is in operation.
H02K 1/20 - Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 3/24 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
H02K 9/197 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
85.
ROTATING ELECTRIC MACHINE HAVING AN IMPROVED ANNULAR COOLING CHAMBER
The rotating electric machine (1) having a housing comprising first (14) and second (15) clamping bearings and an inner face, a stator comprising a stator body (41) clamped between the first and second clamping bearings and having an outer face extending opposite the inner face together defining an annular cooling chamber (21) surrounding the stator body, the stator body comprising a longitudinal stack of stator packs (410), each of which stator pack comprises an annular core having an outer circumference and at least two radially centrifugal protuberances projecting from the outer circumference of the annular core, in the annular cooling chamber, and diametrically opposite one another, the stator packs of the longitudinal stack being identical and two adjacent stator packs of the longitudinal stack being angularly offset from each other such that the respective protuberances thereof do not extend opposite one other.
H02K 1/20 - Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
H02K 9/197 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
86.
ROTATING ELECTRICAL MACHINE HAVING AN ANNULAR COOLING CHAMBER
The rotating electrical machine (1) comprises a casing (10) comprising first (14) and second (15) clamping bearings and an inner face (17), a stator (40) comprising a stator body (41) mounted clamped between the first and second clamping bearings and having an outer face (43) extending opposite and at a distance from the inner face, the rotating electrical machine further comprising a continuous annular cooling chamber (21) delimited radially by the outer and inner faces and longitudinally by the first and second clamping bearings, the annular cooling chamber completely surrounding the stator body.
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
H02K 9/12 - Arrangements for cooling or ventilating by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing wherein the cooling medium circulates freely within the casing
H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Disclosed is a stator for a rotating electrical machine, comprising a stator mass (25) that has slots (21), electrical conductors being housed in the slots, at least some of the electrical conductors, or even a majority of the electrical conductors, being pin-shaped, in particular U-shaped or I-shaped, and extending axially in the slots, at least one first electrical conductor housed in a first slot being electrically connected to a second electrical conductor housed in a second slot, at the outlet of said slots, each of the slots having an uninterruptedly closed contour.
Stator for a rotating electrical machine, comprising a stator mass comprising notches (21), the electrical conductors (22) being housed in the notches (21), at least one portion of the electrical conductors (22), if not the majority, being in the form of a U-shaped pin, each comprising first (22e) and second (22f) legs respectively extending axially in the first and second notches (21), each electrical conductor (22) comprising several strands (23), the strands (23) of the first leg (22e) of an electrical conductor (22) being arranged in the first notch in a radially reverse order of the strands (23) of the second leg (22f) of the same electrical conductor (22) in the second notch.
The invention relates to a rotating electrical machine (1) comprising a housing (10) including two bearings (52, 53), a rotor shaft (5) mounted to rotate freely in the housing via the bearings, a rotor (6) clamped to the rotor shaft so as to rotate the rotor shaft and comprising first (62) and second (63) axial end faces, and a cooling circuit comprising a coolant supply duct (51) arranged coaxially in the rotor shaft, and a radially oriented supply duct (54) arranged in the rotor shaft and in fluid communication with the supply duct and the rotor, characterised in that the cooling circuit further comprises a cooling chamber (61) in fluid communication with the supply duct, extending axially between the rotor and the rotor shaft, opening onto the first and second axial end faces and delimited radially by an angular portion of an external surface (55) of the rotor shaft and an angular portion (65) of an internal surface of the rotor, the two portions extending opposite and at a distance from one another.
The invention relates to a stator (2) for a rotating electrical machine, comprising a stator mass (25) comprising teeth (23) and notches (21) between the teeth (23), each of the notches being, on the air gap side, completely closed, electrical conductors (22) being housed in the notches, the electrical conductors forming a fractional winding, for which the ratio q defined by q=Ne/(2pm) is written as an irreducible fraction z/n, z and n being two non-zero integers, n being different from 1, wherein Ne is the number of stator notches, m the number of winding phases and p the number of pairs of stator poles.
H02K 3/28 - Layout of windings or of connections between windings
H02K 29/03 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
patents
