Patent ID: 6342772
Filing Date: 2002-01-29
Classification: H02P

Abstract:
A drive circuit for a switched reluctance machine having at least two windings per pole, said circuit comprising:first and second direct current links; a first winding having first and second terminals, said first winding connectable across said first and second links; a first switch coupled across the first link and the first terminal of said first winding; a second switch coupled across the second terminal of said first winding and the second link; a second winding connectable in series circuit to said first winding, said second winding having first and second terminals; a third switch coupled across one of the first and second links and the second terminal of said second winding, wherein each of said switches is responsive to a respective gating signal to selectively energize and deenergize one of said windings when the machine operates in a first mode of operation and to selectively energize and deenergize both of said windings when the machine operates in a second mode of operation.