The State of Art of Reduction of Leakage Current in Grid Connected Inverters for PV System
Arvind Jain1, Amita Mahor2, Parikshit Bajpai3
1Arvind Jain,  M. Tech. Scolar Power Electronics ,NIIST ,Bhopal, India.
2Dr. Amita Mahor,  Head, Electrical & Electronics, NIIST, Bhopal, India.
3Pariksit Bajpai,  M. Tech, Scholar Power Electronics, NIIST, Bhopal, India.
Manuscript received on January 25, 2014. | Revised Manuscript received on February 13, 2014. | Manuscript published on February 28, 2014. | PP: 333-336  | Volume-3, Issue-3, February 2014. | Retrieval Number:  C2736023314/2013©BEIESP

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Abstract: Depletion of fossil fuel, unremitting increase in power demand and environmental concern develops a thought among power community to adopt new sources of power generation i.e. renewable energy sources. Due the abundance of solar energy PV systems are more popular, which can isolate from grid with the help of transformer. These transformers increase the cost and make the system more complex with decrease of efficiency. At the same time absence of transformer in grid connected system injects the leakage current in the inverter and increases the electromagnetic emissions, harmonics and losses in the system. To address the above many research have been done related to eliminate this leakage current. In this paper an exhaustive review has been done in the subject area.
Keywords: Leakage current, Photovoltaic (PV) systems, Transformer less inverter.