Drive circuit and method for driving a switched reluctance machine

摘要

Drive circuit (e.g., 100) and method for driving a switched reluctance machine having at least two winding per pole are provided. The circuit includes first and second direct current links (104 and 106). The circuit further includes a first winding (e.g., N1) having first and second terminals (108 and 110). The first winding is connectable across said first and second links. A first switch (e.g., Q1) is coupled across the first link and the first terminal of the first winding. A second switch (e.g., Q2) is coupled across the second terminal of the first winding and the second link. A second winding (e.g., N2) is connectable in series circuit to that first winding. The second winding has first and second terminals (112 and 114). A third switch (e.g., Q3) is coupled across one of the first and second links and the second terminal of the second winding. Each of the switches is responsive to a respective gating signal to selectively energize and deenergize one of the 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.