Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1985-09-13
1987-02-17
Miller, Charles D.
Electricity: motive power systems
Switched reluctance motor commutation control
318138, 318439, H02P 602
Patent
active
046442340
ABSTRACT:
A control circuit is provided for a brushless three-phase d.c. motor which affords four quadrant control from a single command. The control circuit provides acceleration of the motor in both clockwise and counterclockwise directions and braking and generation in both clockwise and counterclockwise directions. In addition to turning on individual transistors of the transistor pairs connected to the phase windings of the motor for 120.degree. periods while the other transistor of that pair is off, the control circuit also provides, in a further mode of operation, turning the two transistors of each pair on and off alternately at a phase modulation frequency during such a 120.degree. period. A feedback signal is derived which is proportional to the motor current and which has a polarity consistent with the command signal, such that negative feedback results.
REFERENCES:
patent: 4296362 (1981-10-01), Beasley
patent: 4368411 (1983-01-01), Kidd
patent: 4390826 (1983-06-01), Erdman et al.
patent: 4494051 (1985-01-01), Bailey
patent: 4544868 (1985-10-01), Murty
Beumer Joseph H.
Manning John R.
Miller Charles D.
Ro Bentsu
The United States of America as represented by the Administrator
LandOfFree
Four quadrant control circuit for a brushless three-phase d.c. m does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Four quadrant control circuit for a brushless three-phase d.c. m, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Four quadrant control circuit for a brushless three-phase d.c. m will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1939275