An electrolytic capacitor-less IPMSM drive with input current shaping based on the predictive control

The control for a low-cost converter which consists of a half-bridge controlled rectifier and a four-switch three-phase inverter with two small film capacitors is presented, where a predictive controller is proposed to handle the large DC link voltage fluctuation, and a leading-angle flux-weakening method is used to control the converter to accomplish high speed operation of the IPMSM. Simulation results verify the effectiveness of the proposed methods.