Patent ID: 6407528
Filing Date: 2002-06-18
Classification: B60T,H02P

Abstract:
A combined drive circuit for a switched reluctance motor and a brush motor, the switched reluctance motor having multiple phase windings, comprising:a DC power source having a first terminal defining a first supply bus and a second terminal defining a second supply bus, each of the phase windings having a first end connected to the first supply bus and a second end; a third supply bus; a SR motor driver for supplying current to the switched reluctance motor, the SR motor driver having a first capacitor coupled to the phase windings for storing energy from the phase windings and a second capacitor coupled to the first capacitor and the third supply bus, thereby developing a third supply bus voltage across the second capacitor; and, a brush motor driver being coupled to the first and second capacitor, the SR motor driver being adapted to supply current to the brush motor, the brush motor driver having a first switching element and a second switching element coupled to the brush motor.