A FAMILY OF ZERO CURRENT TANSITION TRANSFORMERS LESS PHOTO VOLTAIC GRID -CONNECTED SINGLE PHASE INVERTER WITH FUZZY CONTROLLER

Abstract

The demand of electrical energy is increasing day by day .so there is is a need of increasing the efficient management of power generation ,transmission, distribution of electrical energy, due to the A renewable energy under push to reach grid parity without additional subsidies and favorable policies while cost and reliability are major cancers for both pv panels and pv inverters comparable or exceeded grid function an a power become competitive to conversion generation technologies in the goal of this paper to grow the industry and academic in new technology challenges in to smart pv inverters in addition to the “dolor per watts” to the overall system cost target .low leakage current and high efficiency are two key indexes for transformer less pv grid connected inverters. The transformer less inverter topologies Solar cells produce direct current electricity from sun light which can be used to power equipment or to recharge a battery . The first practical application of photovoltaic was to power orbiting satellites and other spacecraft , but todaythe majority of photovoltaic modules are used for grid connected power generation. In this case an inverter is required to convert the DC to AC. There is a smaller market for off-grid power for remote have superior efficiency thanks to saving transformer but there semiconductor devices still hardswitching stated present .A family of ZCT transformer less inverterwithsinusoidal PWM modulation is deduced by using fuzzy logic controller .