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Active and Passive Electronic Components
Volume 2016, Article ID 1962438, 6 pages
Research Article

A Novel Inverter Topology for Single-Phase Transformerless PV System

Department of Information Engineering, Shijiazhuang University of Economics, Shijiazhuang 050031, China

Received 18 October 2015; Revised 6 December 2015; Accepted 15 December 2015

Academic Editor: Adrian Ioinovici

Copyright © 2016 Haiyan Cao. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Transformerless photovoltaic (PV) power system is very promising due to its low cost, small size, and high efficiency. One of its most important issues is how to prevent the common mode leakage current. In order to solve the problem, a new inverter is proposed in this paper. The system common mode model is established, and the four operation modes of the inverter are analyzed. It reveals that the common mode voltage can be kept constant, and consequently the leakage current can be suppressed. Finally, the experimental tests are conducted. The experimental results verify the effectiveness of the proposed solution.