Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1990-01-24
1991-10-08
Ro, Bentsu
Electricity: motive power systems
Switched reluctance motor commutation control
318138, H02P 602
Patent
active
050557513
ABSTRACT:
In a brushless DC motor having a stator coil connected between a source of DC power voltage and circuit common and in which an alternating counter-emf exists, a circuit for converting stored inductive energy in the stator coil into useful motor mechanical energy, the circuit comprising first switch means connected in series between the stator coil and the circuit common for selectively switching current through the stator coil to circuit common during a positive torque producing half-cycle of the alternating counter-emf, thereby maintaining a predetermined average value of the current, and second switch means connected in series with a free-wheeling diode means across the stator coil for re-circulating the current through the stator coil when the first switch means is open and back-emf generated by the coil exceeds the counter-emf by an amount sufficient to forward-bias the diode means, whereby the current re-circulating through the stator coil results in positive torque while the first switch means is open.
REFERENCES:
patent: 3662237 (1972-05-01), Favre
patent: 3988654 (1976-10-01), Takahashi et al.
patent: 4135120 (1979-01-01), Hoshimi et al.
patent: 4385265 (1983-05-01), Uzuka
patent: 4393339 (1983-07-01), Kimura
patent: 4514667 (1985-04-01), Sakmann et al.
patent: 4574225 (1986-03-01), Pershall et al.
patent: 4879497 (1989-11-01), Meyer et al.
LandOfFree
Brushless motor control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Brushless motor control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Brushless motor control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-259106