Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2002.11d
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- Pages.215-217
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- 2002
Modeling of utility interactive photovoltaic system DC-DC converter
태양광 발전 시스템용 DC-DC 컨버터의 모델링
- Mun, S.P. (Hyungnam University) ;
- Park, Y.J. (Hyungnam University) ;
- Kim, Y.M. (Masan College) ;
- Kang, W.J. (Kyungnam Junior College) ;
- Lee, H.W. (Hyungnam University) ;
- Suh, K.Y. (Hyungnam University)
- Published : 2002.11.14
Abstract
In this paper, a new converter for utility interactive photovoltaic system is proposed, the conventional utility interactive photovoltaic system is composed of a PWM inverter and a DC converter. However, the increased switching loss and the high frequency switching noise become a problem. the control accuracy of the system is made to lower by the dead time of the switching devices. and it becomes a cause of the lower conversion efficiency. In order to resolve those problems, we applied a non- dissipative snubber circuit to a converter, which generates the single phase absolute value of sinusoidal current. the converter consists of two switching devices and one capacitor which constitute a non-dissipative snubber circuit. the proposed circuit is very useful to minimize and increase efficiency, when it is used to an utility interactive photovoltaic system. it is confirmed by simulation that the proposed converter for new photovoltaic system has stable operation and good output.
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