Designing Of Z-source inverter for photovoltaic system using MATLAB/SIMULINK

Photovoltaic system using single phase Z-Source inverter is presented in this paper. Traditional inverter technology is modified into new Z-Source inverter. The Z-Source network provides a simple single-stage power conversion concept. It is competitive alternative to conventional photovoltaic power conditioner systems due to its voltage-buck or boost capability and additional state known as shoot through state. During this state it is possible to switch on both switches of same phase leg. Also due to a lower number of switching devices power loss is reduced. MPPT technique is applied to reduce shading problem of solar light, which will result in consistent power generation and good system efficiency. Z-source network is applied for inverter application to improve the boosted dc bus voltage capability. The whole system is designed and simulated using MATLAB/Simulink.