Transformer less Soft Switching Bidirectional DC-DC Chopper
Baburaja .C1, J. Jayakumar2
1Baburaja.C, Dept. Electrical and Electronics Engg, Karunya University, Coimbatore, India.
2Dr. J. Jayakumar, Dept. Electrical and Electronics Engg, karunya University, Coimbatore, India.
Manuscript received on January 24, 2013. | Revised Manuscript received on February 09, 2013. | Manuscript published on February 28, 2013. | PP: 391-395 | Volume-2 Issue-3, February 2013. | Retrieval Number: C1152022313 /2013©BEIESP
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Abstract: Transformer less Soft Switching Bidirectional DCDC Chopper has been proposed in this paper. The above mentioned system can be operated with ZVS, fixed switching frequency, and a ripple-free inductor current regardless of the power flow direction. To provide ZVS of the power switches and a ripple-free inductor current, the proposed converter utilizes a simple auxiliary circuit that consists of an additional winding to the main inductor and an auxiliary inductor. In the ZVS operation, the reverse recovery problem of the anti parallel body diode of the power switch does not occur. The ripple-free inductor current can reduce the voltage ripple. Analysis of the proposed bidirectional DC-DC converter a discussed in detail, and the experimental results obtained on 100-W prototype are analyzed in this paper.
Keywords: Bidirectional DC-DC converter, DC-DC power conversion ,zero-voltage-switching.