Design and simulation of a novel single phase to three phase wind power converter

Abstract

In this paper the output of the single phase wind generator, common for low power application, is converted efficiently into a three phase power. A control system for impedance(z)-source inverter is designed suitable for this wind power conversion. The variable output of wind generator due to unpredictable variation in wind speed, is suitably controlled through a closed loop system through boost-capability of z-source inverter. The z-source PWM inverter replacing the conventional PWM inverter provides the unique output voltage regulation by making an appropriate choice of boost factor under both variable generator voltage and variable load conditions. The closed loop controller carefully monitors the wind generator voltage and controls the shoot-through and non-shoot through duty cycles of the inverter to develop a three phase steady voltage, which is not possible by conventional PWM control. The whole system is designed and simulated under arbitrary input variation condition and results are presented.