Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1992-06-30
1995-03-14
Shoop, Jr., William M.
Electricity: motive power systems
Switched reluctance motor commutation control
318439, 388815, 388910, H02P 118
Patent
active
053979672
ABSTRACT:
A high side driver circuit and method for controlling the turnoff slew rate to an inductor of a motor is presented. The inductor is selectively connected between a supply voltage on a high side and a reference potential on a low side. The driver circuit has a power transistor having a current control path connected in series between the high side of the inductor and the supply voltage to connect selectively the inductor to the supply voltage. An amplifier has an output connected to a control element of the power transistor. A capacitor connected between a non-inverting input of the amplifier and the reference potential and a current source connected between the non-inverting input of the amplifier and the reference potential are switchably connected between the supply voltage and the non-inverting input of the amplifier for turning on and off the circuit. A feedback path is connected between the high side of the coil and an inverting input of the amplifier.
REFERENCES:
patent: 4008424 (1977-02-01), Bompani
patent: 4743815 (1988-05-01), Gee et al.
patent: 5160873 (1992-11-01), Tukiyama et al.
patent: 5191269 (1993-03-01), Carobolante
patent: 5210474 (1993-04-01), Oswald
Carobolante Francesco
Rastegar Ali J.
Bachard Richard A.
Jorgenson Lisa K.
Martin David
Robinson Richard K.
SGS-Thomson Microelectronics Inc.
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