Abstract

A permanent magnet electric rotating machine and control system is described. A plurality of phase windings may be energized by a single excitation current from a power supply. A commutation circuit, operationally independent of the power supply, is operative to control a timing and duration of supply of the excitation current transmitted to or drawn from individual of the phase windings. The commutation circuit further comprises a delay timer, said delay timer accounting for phase lag in the current pulse compared to the back EMF from the permanent magnet electric rotating machine.

IPC Classes  ?

• H02P 6/15 - Controlling commutation time
• H02P 6/182 - Circuit arrangements for detecting position without separate position detecting elements using back-emf in windings

Abstract

A permanent magnet motor (2), and also a permanent magnet generator (102) comprising a plurality of phase windings, a control system (16) and a commutation circuit (6) is described. The commutation circuit (6) is operative for controlling a timing of a current supplied to the phase windings in dependence upon an angular position of the permanent magnet motor (2). The control system (16) is operative to supply a current to an individual of the phase windings in a current pulse event occurring within a commutation event. The duration of the current pulse event is less than the duration of the commutation event and the proportion of the commutation event for which the current is supplied to the individual of the phase windings is determined so as to control the speed of the motor (2).

IPC Classes  ?

• H02P 6/16 - Circuit arrangements for detecting position

Abstract

An electrical controller for electric rotating machines is provided. A control system for electric rotating machines transmits a controlled quantity of current to or from different windings of the electric rotating machine at any given time. Furthermore, the amplitude of the current is independently variable of the timing and duration of the transmission of the current to or from the windings. This allows increased control of the electric rotating machine and facilitates the operation of the electric motor at high mechanical and/or electrical speeds.

IPC Classes  ?

• H02P 23/00 - Arrangements or methods for the control of AC motors characterised by a control method other than vector control
• H02P 6/00 - Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor positionElectronic commutators therefor
• H02K 21/16 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
• H02P 6/06 - Arrangements for speed regulation of a single motor wherein the motor speed is measured and compared with a given physical value so as to adjust the motor speed
• H02P 25/026 - Synchronous motors controlled by supply frequency thereby detecting the rotor position
• H02P 27/06 - 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 using DC to AC converters or inverters
• H02K 21/12 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets
• F01N 5/04 - Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using kinetic energy
• F02B 39/10 - Non-mechanical drives, e.g. fluid drives having variable gear ratio electric
• H02P 6/08 - Arrangements for controlling the speed or torque of a single motor
• H02P 6/18 - Circuit arrangements for detecting position without separate position detecting elements
• H02P 9/02 - Arrangements for controlling electric generators for the purpose of obtaining a desired output Details
• H02P 6/28 - Arrangements for controlling current
• H02P 6/15 - Controlling commutation time
• H02P 25/03 - Synchronous motors with brushless excitation
• H02K 1/27 - Rotor cores with permanent magnets

Abstract

An electrical controller for electric motors is provided. A control system for an electric motor comprises means for supplying excitation current to different windings of the motor at any given time. Furthermore, the amplitude of the excitation current is independently variable of the timing and duration of the application of the excitation current to the windings. This allows increased control of the motor and facilitates the operation of the motor at high mechanical and/or electrical speeds.

IPC Classes  ?

• H02P 1/18 - Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual DC motor
• H02P 25/02 - Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
• H02P 6/06 - Arrangements for speed regulation of a single motor wherein the motor speed is measured and compared with a given physical value so as to adjust the motor speed
• H02P 27/06 - 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 using DC to AC converters or inverters
• F02B 37/10 - Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump at least one pump being alternately driven by exhaust and other drive
• H02K 21/16 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
• H02K 1/27 - Rotor cores with permanent magnets
• H02P 6/14 - Electronic commutators