A reconfigurable-winding system for electric vehicle drive applications

In this paper, a reconfigurable-winding system for electric vehicles (EV) applications is discussed. It features fewer solid-state ac switches compared with state-of-the-art designs and does not have a dc circuit short-circuit failure mode. Simulation results show that the proposed design can achieve significant inverter loss reduction in low and high speed modes. Preliminary experiments demonstrate the ability to change winding configurations in about 5 ms.