Abstract：Compared to previous Z-source inverter topology, improved Z-source inverter has advantages such as low Z-source capacitor voltage stress and inherent inrush current limitation. This paper investigates the third harmonic injection control strategy of improved Z-source inverter. Compared to simple boost control, the third harmonic injection control can reduce the voltage stress and Z-source inductor current ripple. Theoretical analysis, simulation and experimental results are presented to demonstrate the features of the control.
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2009, Vol. 24 
