Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1996-09-05
1999-02-16
Ip, Paul
Electricity: motive power systems
Switched reluctance motor commutation control
318138, 318438, H02K 2300
Patent
active
058724354
ABSTRACT:
An electrical drive arrangement for an electric motor including a stator having a plurality of phase windings, and a rotor. The drive arrangement includes an electronic commutation circuit to supply electric power to the phase windings of the electric motor, a position sensor device, a phase control circuit coupled to receive the sensor signals and provide resultant sensor signals with a phase shift relative to the phase relationship of the sensor signals, a waveform generator coupled to receive the resultant sensor signals and provide commutation signals, and a control circuit coupled at least to the waveform generator for setting the amplitude and the phase shift of the electric power to be supplied to the motor. The phase control circuit includes a control signal generation circuit, a sensor signal allocation circuit, a delay time determining circuit, a sensor signal output circuit, and a load signal generating circuit. The drive arrangement enables the torque angle, i.e., the phase angle between the magnetic field generated in the stator and the rotor position, to be controlled in dependence upon the movement of the rotor using simple position signals and simple circuitry.
REFERENCES:
patent: 4818908 (1989-04-01), Tamae et al.
patent: 5285135 (1994-02-01), Carobolante et al.
patent: 5298839 (1994-03-01), Takeda
patent: 5428276 (1995-06-01), Carobolante et al.
Bolte Ekkehard
Halfmann Jurgen
Scholten Lutz
Wendt Matthias
Blocker Edward
Ip Paul
U.S. Philips Corporation
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