Improved performance of the switched inductor quasi Z-source inverter

Abstract

This paper proposed the improvement of switched-inductor quasi-Z-source inverters (SL-qZSIs) with different control technique. SL-qZSIs adds only one inductor and three diodes as compare to the quasi z-source inverter but as compare to qZSI boost factor is high in SL-qZSI. This paper compares the voltage gain and voltage stress of SL-qZSI for simple boost, maximum boost and maximum constant boost control. In comparison we find that for the same value of modulation index boost factor is high as compare to simple boost control but low as compare to maximum boost control and maximum constant boost control method has a much lower voltage stress across the devices.