AN ELECTRONICALLY CONTROLLED UNIVERSAL MOTOR

WIPO Patent Application WO/2013/041835

A3

An electric motor apparatus configured as a universal motor and method of operating the same are provided. The electric motor apparatus comprises a rotor component arranged to rotate with respect to a stator component. A rotor winding arrangement is mounted on the rotor component and a stator winding arrangement is mounted on the stator component. A rotational position indicator generates rotational position information indicative of a relative orientation of the rotor component and the stator component. A rotor winding control unit is fixedly mounted on the rotor component and is coupled to a rotor supply voltage supplied to the rotor component. The rotor control unit is configured to perform a rotor waveform generation operation to generate a rotor waveform from the rotor supply voltage in dependence on the rotational position information and to apply the rotor waveform to the rotor winding arrangement. A stator winding waveform generator is configured to receive a stator supply voltage, to generate therefrom a stator waveform in dependence on the rotational position information and to apply the stator waveform to the stator winding arrangement. The rotor waveform and the stator waveform are generated in synchronization with the relative orientation of the rotor component and the stator component in order to synchronize mutual interactions of the rotor winding arrangement and the stator winding arrangement with the relative orientation.

PIETROMONACO DAVID (US)

PCT/GB2012/051922

August 22, 2013

August 08, 2012

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ADVANCED RISC MACH LTD (GB)
PIETROMONACO DAVID (US)

H02K29/00; H02P25/14

US20020070694A1	2002-06-13
EP0555151A1	1993-08-11
US5936374A	1999-08-10

MALDEN, Nicholas (120 Holborn, London EC1N 2DY, GB)

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