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A novel pwm method of improving efficiency of single phase transformerless photovoltaic inverter

Author:

D. Gladson and Dr. M. Sasikumar

Subject Area:

Physical Sciences and Engineering

Abstract:

This paper presents the novel method that is used to improve the efficiency of a single phase transformerless photovoltaic inverter connected to the grid along with the elimination of ground leakage current, the result was simulated through computer software tool using MATLAB/SIMULINK VERSION 7.9. In the conventional method of grid connected system there is an drawback of lower isolation efficiency and presence of ground leakage current. This problem can be overcome by isolating both the grid and source individually using switching arrangements along with HERIC circuit. This topology improves the efficiency of the system and provides better isolation and minimizes the losses in the Single phase transformerless photovoltaic inverter connected to the grid [1].

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