Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1997-10-08
2000-06-13
Martin, David
Electricity: motive power systems
Switched reluctance motor commutation control
318439, 318801, 318811, 388811, H02K 2300
Patent
active
060753285
ABSTRACT:
A motor drive apparatus and an air-conditioner using the motor control apparatus has a feature which allows it to gradually increase a dc voltage value to a predetermined value when starting the switching operation of a chopper circuit by dc voltage control thereof, and when stopping the switching operation of the chopper circuit to be able to gradually decrease the dc voltage value to a predetermined value. Further, the dc voltage command value is adjusted so as to make it possible to maintain a preferred value of dc voltage. Thereby, fluctuation in the number of revolutions of the motor can be prevented even if the converter is started or stopped while the motor is operating, thereby allowing the motor drive apparatus and air-conditioner using the motor control apparatus of the invention to be operated at their maximum capacities.
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Ishii Makoto
Katou Kouji
Kawabata Yukio
Notohara Yasuo
Shinozaki Hiroshi
Hitachi , Ltd.
Martin David
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