Abstract
The transformer-less inverter has an increasing demand due to its low cost, high efficiency, and reliability. The elimination of transformers from grid connected PV enables to create the leakage currents across stray capacitance, which is connected between PV and the ground. To overcome this disadvantageous issue, the topology used is a single step conversion process of directly connecting coupled inductor to the grid. The efficiency and the quality of AC output current is improved by implementation of high frequency PWM switching commutation to the converter. The proposed system is focused to inject reactive power to the grid, changing the controlling techniques used for the Gate Pulse input, and reducing the number of switches, passive elements, and harmonics. It has an overall efficiency of 98.04%, higher than those of existing converters.
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