Title :
Bipolar operation of fully-pitched winding switched reluctance drives
Author :
Barrass, P.G. ; Mecrow, B.C. ; Clothier, A.C.
Author_Institution :
Newcastle upon Tyne Univ., UK
Abstract :
Doubly salient switched reluctance (SR) machines usually have single-tooth windings supplied from unipolar power converters. For bipolar operation with independent phase current control, four active devices per phase are required. However, for a three-phase machine connected in star configuration, bipolar phase currents can be supplied from a standard six switch bridge circuit. An experimental fully-pitched winding SR machine has been produced by rewinding a conventional single-tooth winding SR machine that was rated at 7.5 kW, 1500 RPM. The drive electronics comprises of an IGBT inverter switching at 10 kHz, and a microprocessor based controller. The results presented in this paper were obtained from an experimental drive operating at low speed, with the phases connected separately, or in star configuration
Keywords :
DC-AC power convertors; bridge circuits; insulated gate bipolar transistors; invertors; machine testing; machine windings; power bipolar transistors; reluctance motor drives; switching circuits; 10 kHz; 7.5 kW; IGBT inverter; bipolar operation; doubly salient switched reluctance machines; fully-pitched winding; independent phase current control; microprocessor based controller; motor drives; power converters; six switch bridge circuit; star configuration; switching; three-phase machine;
Conference_Titel :
Electrical Machines and Drives, 1995. Seventh International Conference on (Conf. Publ. No. 412)
Conference_Location :
Durham
Print_ISBN :
0-85296-648-2
DOI :
10.1049/cp:19950873
