| Abstract |
A convertor with six semiconductor switches is used to feed a four-phase doubly-salient switched reluctance motor. The convertor circuit uses an average of one and a half switches per phase winding, with each switch rated at the supply voltage and allows the full supply voltage across each phase winding. A switching algorithm to control the switches, two of which are connected to two phases each, is described. Test results from a 4 kW IGBT convertor, four-phase switched reluctance motor drive over the speed range 0 to 2000 rpm and torque range 0 to 25 Nm, rated torque, are presented. Results include, efficiency, power losses, optimal advance and overlap angle. |
