PC based data acquisition system for measurement of switched reluctance motor (SRM)

The paper proposes a PC-based scheme for the measurement of the inductance profile of a switched reluctance motor (SRM) under conditions closer to normal operation. Different methods for inductance measurement appropriate to SRMs are briefly described. Specifications of the data acquisition system (DAS) for PC-based measurement systems for SRMs are derived by considering the operational features and instrumentation requirements of SRMs in order to develop an appropriate DAS. Implementation of an offline system for the measurement of inductance of SRMs based on the proposed scheme is explained. Finally, results of tests conducted on a 7.5 kW SRM are presented in support of the proposed scheme.