This study presents quasi z source inverter (QZSI) which is new topology derived from the traditional Z source inverter (ZSI). Quasi z source inverter (QZSI) with built in impedance network is an advanced compared to traditional voltage source inverter and current source inverter technology. QZSI can realize buck/boost of voltage and inversion in single stage which improves reliability. The quasi Z source inverter (QZSI) can be realize through unique control methods like simple boost control(SBC) and maximum boost control(MBC), which helps to produce wide range voltage gain. These control techniques are modification of simple PWM. The QZSI with its unique impedance network and wide range of voltage gain like features makes it most suitable for PV based power system application.

Quasi Z-source Inverter, Z-source Inverter, Simple boost control, Maximum boost control

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