A SINGLE-PHASE SINGLE-STAGE SWITCHED-BOOST INVERTER WITH FOUR SWITCHES



project center in trichy


This paper proposes a new single-phase single-stage switched-boost inverter with four switches. Like the quasi-Z-source inverter (qZSI) and quasi-switched
boost inverter (qSBI), the proposed inverter has the main features as continuous input current, buck/boost voltage with single-stage conversion and shoot-through immunity. Compared to the qSBI, the proposed inverter uses one more capacitor and one less switch. This paper presents the operating principles, PWM control strategy, parameter design guidelines, and simulation results for the proposed inverter. To verify the performance of the proposed inverter, an 800 W prototype was built with an 110 V/50 Hz output voltage in stand-alone and grid-connected modes. The simulation and experimental results matched those of the theoretical analysis.

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