AC Output Voltage Control with Minimization of Voltage Stress Across Devices in the Z-Source Inverter Using Modified SVPWM

The paper proposes the algorithms of AC output voltage control in the Z-source inverter while minimizing the voltage stress across the devices. A novel switching pattern in the SVPWM is used in order to boost easily the capacitor voltage by controlling a shoot through time. The possible operating region for obtaining a desired AC output voltage to DC input voltage is analyzed. The voltage stress across the switching devices can be so much reduced at a given AC output voltage. The proposed methods are verified with the simulation studies and experiments with 32-bit DSP