Drive for DC-Biased Sinusoidal Current Vernier Reluctance Motors with Asymmetrical Power Electronics Devices

摘要

In DC-biased sinusoidal current vernier reluctance machines (DC-biased-VRMs), the DC exciting winding and AC armature winding are integrated into one single winding. Therefore, the copper loss can be reduced with torque density increasing, and only one set of power electronic converter is demanded. This paper is to propose a DC-biased-VRMs drive with asymmetrical power electronics devices and corresponding control strategy. In order to make the power dissipation and temperature rise of each devices more balanced, the asymmetrical H-bridge inverter with both higher current capacity devices and lower ones is designed as well as simulated. The proposed asymmetrical H-bridge can reduce the cost of power electronics devices effectively due to the use of lower current capacity IGBTs and diodes without unipolar current constraint. The simulation and experimental results verify that the proposed drive system is feasible for DC-biased-VRMs driving.