ANALYSIS OF SINGLE PHASE Z-SOURCE INVERTER USING VARIABLE LOAD

This paper presents a high performance, low cost prototype Z-source inverter for variable load or household based application. It is an improvement over Traditional Voltage-source and Current-source inverter with a unique X-shaped network. The Xshaped network can provide a single stage power conversion concept where as the traditional inverter requires two stage power conversion for renewable energy applications. Z-source inverter system is designed and simulated using MatlabSimulink and their results are compared with the hardware designed by microcontroller ATMEL AT89S52. The sinusoidal PWM signal are generated using microcontroller with 10Khz switching speed.The performance analysis, simulation and comparison have been carried out it results the Z-source inverter system is more suitable as compared to traditional inverters. The efficiency, stability, faster switching action of the MOSFET, the total harmonics distortion against the nonlinear load is also better as variation in modulation index. Key words: Z-source inverter (ZSI), Pulse W