Patent ID: 6087799
Filing Date: 2000-07-11
Classification: H02P

Abstract:
A switched reluctance machine system comprising:a doubly salient reluctance machine having a rotor, a stator and at least one phase winding; anda switching circuit comprising a pair of switching devices serially connected between a positive and a negative power rail, a pair of capacitors serially connected between the power rails to define a junction at a common point of connection between the capacitors and being in parallel with the switching devices such that no switching device is connected to said junction, and a diode connected across each switching device to conduct towards the positive rail, the phase winding being connected between the switching devices at one end and between the capacitors at the other end, the switching devices being selectively actuatable to energize the phase winding such that the frequency of current reversal in the phase winding is not greater than half the frequency of the electrical cycle of the machine.