Boost control for PV applications using impedance source inverter

摘要

This paper is composed of study of operation of Impedance Source Inverter (ZSI) and its steady state analysis under different operating conditions. Output voltage of ZSI depends on shoot-through control method applied to generate pulses provided to semiconductor switches. Among different methods, simple boost control technique, being most uncomplicated is implemented here. As dc-input from solar panel is not constant, voltage boosting and operation of converter as ZSI is needed only if the input from panel is low else it will perform normal PWM inverter action. Thus, constant AC-supply can be maintained by switching between shoot-through and non-shoot through modes. A virtual model of simple boost control ZSI is built using MATLAB/SIMULINK and results are analyzed for both conditions.