조명전기설비학회논문지 (Journal of the Korean Institute of Illuminating and Electrical Installation Engineers)
- 제25권3호
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- Pages.40-49
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- 2011
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- 1229-4691(pISSN)
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- 2287-5034(eISSN)
DOI QR Code
Optimal Design of a DC-DC Converter for Photovoltaic Generation
- Kwon, Soon-Kurl (Electrical Engineering Department of Kyungnam University)
- 투고 : 2011.02.22
- 심사 : 2011.03.21
- 발행 : 2011.03.30
초록
This paper presents novel circuit topology of half-bridge soft-switching PWM inverter type DC-DC high power converter for DC bus feeding power plants. The proposed DC-DC power converter is composed of a typical voltage source-fed, half-bridge high frequency PWM inverter with a high frequency planar transformer link PWM control scheme and parallel capacitive lossless snubbers. The operating principle of the new DC-DC converter treated here is described by using switching mode-equivalent circuits, together with its unique features. All the active power switches in the half-bridge arms and input DC bus lines can achieve ZCS turn-on and ZVS turn-off commutation transitions. The total turn-off switching losses of the power switches can be significantly reduced. As a result, high switching frequency IGBTs can actually be selected in the frequency range of 40[kHz] under the principle of soft-switching. The performance evaluations of the experimental setup are illustrated practically.
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