High Step up DC-DC Converter with Soft Switching PV System |
Author(s): |
| R.Devi , GNANAMANI COLLEGE OF ENGINEERING; K.Padmanaban, GNANAMANI COLLEGE OF ENGINEERING |
Keywords: |
| Photovoltaic system, Fly back converter, Luo converter, Snubbers, Soft switching |
Abstract |
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A High step-up converter, which is suitable for renewable energy system, is proposed in this paper. The photovoltaic systems provide promising ways to generate clean electric power. A Full-bridge dc–dc converter with a conversion ratio around nine times, soft start-up, and soft switching features for battery charging/discharging is proposed. The converter is equipped with an active fly back and two passive capacitor–diode snubbers, which can reduce voltage and current spikes and reduce voltage and current stresses. It can achieve near zero-voltage-switching and zero-current switching Through a Fly back converter and coupled inductors; a Luo converter obtains high step-up gain without operating at extreme duty ratio. Finally, the prototype circuit with 12V input voltage, 400 V output, and 2kW output power is operated to verify its performance. The highest efficiency is 97.1%. |
Other Details |
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Paper ID: IJSRDV3I1152 Published in: Volume : 3, Issue : 1 Publication Date: 01/04/2015 Page(s): 583-586 |
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