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A reduced leakage current transformerless photovoltaic inverter

Kok Soon Tey and Saad Mekhilef

Renewable Energy, 2016, vol. 86, issue C, 1103-1112

Abstract: The transformerless inverters used in the grid connected photovoltaic (PV) system induce leakage current due to the absence of galvanic isolation and unstable common mode voltage. Even though, the leakage current is able to be reduced by using the H5 topology, it is still considered high due to the existence of junction capacitance in the switches during the freewheeling mode. In this paper, a six switches and two diodes single phase transformerless PV inverter with stable common mode voltage and reduced leakage current is proposed. The simulation of the proposed topology is carried out in MATLAB and validated experimentally. The results show that the proposed topology has lower leakage current as compared to the H5 topology.

Keywords: HERIC inverter; H5 Topoogy; Leakage current; Photovoltaic inverter; Transformerless inverter (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:86:y:2016:i:c:p:1103-1112

DOI: 10.1016/j.renene.2015.09.039

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