High Frequency Bidirectional Isolated Matrix Converter for AC-Motor Drives with Model Predictive Control

This paper aims to develop the inverter mode of high frequency isolated matrix converter (HFI-MC) for on-board integrated motor drive and battery charger in electric vehicle. Unlike grid side, motor drive requires that HFI-MC could control flexibly amplitude and angle of AC voltage, especially at zero or low speed, it need to output extremely low voltage and high current, which is difficult for many existing methods. In this digest, a novel approach will be proposed for HFI-MC. MC works at AC current source inverter mode, which control the angle of current vector, and the selection of current vector is completed by model predictive control. Full bridge control the amplitude of current vector by duty cycle and phase shift. The explicit analytical relationships between amplitude of current vector and duty cycle as well as phase shift are given. Finally, the effectiveness and feasibility of the proposed approach is verified.