Electricity: motive power systems – Switched reluctance motor commutation control
Reexamination Certificate
2005-05-31
2005-05-31
Martin, David (Department: 2837)
Electricity: motive power systems
Switched reluctance motor commutation control
C318S132000, C318S434000, C318S721000, C388S911000
Reexamination Certificate
active
06900604
ABSTRACT:
A drive control system, with PLL control, drives a rotatable multi-phase sensor-less motor by switching a current of a field coil of each phase depending on the rotating phase of the motor. When the moto is driven, a desired phase is selected as a datection phase, and a voltage induced on the coil of the detection phase is detected when power is fed for a predetermined time to the field coils other than the detection phase. A magnetic pole position is detected from the amplitude condition of the detected induced voltage. Based on this detection, the power-feeding phase of the motor drive is determined. Power feeding and pole position detection are performed alternately.
REFERENCES:
patent: 4607203 (1986-08-01), Bohm et al.
patent: 4651214 (1987-03-01), Rodriguez-Cavazos
patent: 5223772 (1993-06-01), Carobolante
patent: 5254914 (1993-10-01), Dunfield et al.
patent: 5442266 (1995-08-01), Morehouse et al.
patent: 5619109 (1997-04-01), Cameron et al.
patent: 5767654 (1998-06-01), Menegoli et al.
patent: 5850130 (1998-12-01), Fujisaki et al.
patent: 5990656 (1999-11-01), Kardash
patent: 6081091 (2000-06-01), Mitchell et al.
patent: 6100656 (2000-08-01), El-Sadi et al.
patent: 6232730 (2001-05-01), Doyama et al.
patent: 6252362 (2001-06-01), White et al.
patent: 6344721 (2002-02-01), Seki et al.
patent: 6400107 (2002-06-01), Nakatani et al.
patent: 6541928 (2003-04-01), Eroglu et al.
patent: 6653805 (2003-11-01), Menegoli
patent: 6771033 (2004-08-01), Kokami et al.
patent: 04312388 (1992-11-01), None
patent: 05282046 (1993-10-01), None
patent: 06098585 (1994-04-01), None
Kawauchi Kunihiro
Kimura Reiichi
Kokami Yasuhiko
Tsunoda Toshiyuki
Colon Santana Eduardo
Hitachi Tohbu Semiconductor, Ltd.
Hitachi ULSI Systems Co. Ltd.
Miles & Stockbridge P.C.
Renesas Technology Corp.
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