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A high-performance Z-source inverter with low capacitor voltage stress and small inductance

A novel high-performance Z-source inverter is proposed in this paper. It can obtain the same voltage gain with low Z-source network capacitor voltage stress than conventional one and has inherent limitation to inrush-current at startup. Moreover, it can work in a very wide range load even with small inductance of the Z-source network inductor. Therefore, compared with the conventional Z-source inverters, the proposed converter not only has lower cost but also has smaller weight and size. The operating principle and parameters design of the proposed converter are analyzed. Simulation and experimental results are presented to verify the validity of the proposed high-performance Z-source inverter.