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http://dx.doi.org/10.6113/TKPE.2012.17.6.539

Bi-directional Photovoltaic Inverter with High Efficiency and Low Noise  

Lee, Sung-Ho (Div. of Electric. Electron. Eng., Pohang Univ. of science and technology)
Kwon, Jung-Min (Dept. of Electric. Eng., Hanbat National University)
Kwon, Bong-Hwan (Division of Electric. Electron. Eng., Pohang Univ. of science and technology)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.17, no.6, 2012 , pp. 539-545 More about this Journal
Abstract
Due to merits cost and efficiency, the transformer-less type photovoltaic (PV) inverters have been popularized in the solar market. However, the leakage current flowing through a parasitic capacitor between PV array and ground can cause adverse effect in the transformer-less PV system. In this paper, a bi-directional PV inverter with high efficiency and low noise is proposed for the PV system with an energy storage device. The proposed inverter is a transformer-less type and performs the bi-directional power control between dc sources and grid with high efficiency. In addition, the proposed inverter can suppress the leakage current and obtain low noise characteristic. Finally, 3-kW prototype was implemented to confirm validity of the proposed inverter.
Keywords
bi-directional inverter; transformer-less type inverter; leakage current; energy storage system;
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Times Cited By KSCI : 1  (Citation Analysis)
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