Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1998-07-14
1999-10-19
Masih, Karen
Electricity: motive power systems
Switched reluctance motor commutation control
318138, 318439, 318430, 318431, 318721, 318722, 318802, H02K 2300
Patent
active
059694912
ABSTRACT:
The sensing of the rotor position for synchronizing the drive of a multi-phase brushless motor when driven in a "multi-polar" mode is carried out by interrupting the driving current in at least one of the windings of the motor coupled with a zero-cross sensing circuit of the BEMF signal. This done by using a first logic signal, enabling a logic gate for asserting a zero-cross event detected by the circuit by a third logic signal, and simultaneously resetting the first signal and the third signal after a certain period of time from the instant of interruption.
REFERENCES:
patent: 4364004 (1982-12-01), Bourbeau
patent: 4922169 (1990-05-01), Freeman
Patent Abstracts of Japan, vol. 10, No. 125 (E-402) '2182!, May 10, 1986 & JP 60 257791 A (Hitachi Seisakusho K.K.), Dec. 19, 1985.
Patent Abstracts of Japan, vol. 97, No. 6, Jun. 30, 1997 & JP 09 047075 A (Matsushita Electric Industrial Co., Ltd.), Feb. 14, 1997.
Uhrig, C., "Trapez-Oder Sinusansteuerung?" Elektronik, vol. 38, No. 7, Mar. 31, 1989, pp. 116-118, p. 117, col. 1, paragraph 2.
Boscolo Michele
Salina Alberto
Viti Marco
Masih Karen
STMicroelectronics S.r.l.
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