| 摘要 |
PCT No. PCT/FR97/00120 Sec. 371 Date Aug. 6, 1998 Sec. 102(e) Date Aug. 6, 1998 PCT Filed Jan. 22, 1997 PCT Pub. No. WO97/29542 PCT Pub. Date Aug. 14, 1997A method for powering an electronically switched variable reluctance polyphase electric motor from a rectified voltage source, including for each phase, magnetizing sequences during which the rectified voltage is applied to each phase and demagnetizing sequences during which the inverse of the rectified voltage is applied to each phase. The method further includes sensing disturbances in the current from the rectified voltage source and in response thereto, free-wheel sequences during which the magnetic energy currently stored in at least one of the phase is substantially maintained therein.
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