Rotor design and performance evaluation of a PM-assisted reluctance synchronous traction machine

[摘要] ENGLISH ABSTRACT:The thesis describes the optimum rotor design and performance of a 110kWPermanent-Magnet assisted (PM-assisted) Reluctance Synchronous traction Machine(RSM) using bonded permanent magnet sheets. Particular attention is given to theperformance of the machine drive in the flux-weakening speed region. A detailexplanation is given of the finite-element design optimisation, the basic principles ofoperation and the control-design of the PM-assisted RSM drive. A theoretical torquecomparison of the PM-assisted RSM, the standard RSM and the induction machine isalso done. The measured and calculated results of the different drives are presentedand analysed in detail. It is concluded that the performance of the PM-assisted RSMin terms of torque, voltage and power factor compares favourably well with that of theinduction machine in both the constant torque and flux-weakening speed regions.Furthermore, it is shown that the temperature rise of the stator winding of the PMassistedRSM is lower than that of the RSM with both machines at the same load.

[发布机构] Stellenbosch University