A new topology for photovoltaic 4 series DC/DC converter with high efficiency under wide load range

Jong Pil Lee, Byung Duk Min, Jeong Joong Kim, Kang Yul Ryul, Tae Jin Kim, Dong Wook Yoo, Eui H. Song, Ji Yoon Yoo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

The paper proposes a new topology for photovoltaic dc/dc converter with high efficiency under wide input voltage range is proposed. Photovoltaic dc/dc is a very crucial part of power conditioning system(PCS). Considering that output characteristic of photovoltaic cell has wide voltage range, depending on the operating conditions of photovoltaic cell, the dc/dc converter also needs to have wide input voltage range to regulate the constant output voltage. In addition, a high rated voltage of power switch(MOSFET) for dc/dc converter is necessary in order to be compatible with the high maximum output voltage of photovoltaic cell's maximum output voltage. Also photovoltaic power conditioning system should have a high efficiency under operation condition. To satisfy PV PCS condition series connected non-isolated dc/dc converter topology is proposed. This paper examines the proposed topology employing four modules and shows that it dramatically enhances the energy efficiency from low load to high load condition by reducing the required power level for dc/dc converter by one-third of conventional dc/dc converter. A case of 25kW prototype as the PV dc/dc converter is introduced to experimentally verify the proposed topology.

Original languageEnglish
Title of host publication7th Internatonal Conference on Power Electronics, ICPE'07
Pages257-260
Number of pages4
DOIs
Publication statusPublished - 2008 Dec 1
Event7th Internatonal Conference on Power Electronics, ICPE'07 - Daegu, Korea, Republic of
Duration: 2007 Oct 222007 Oct 26

Other

Other7th Internatonal Conference on Power Electronics, ICPE'07
CountryKorea, Republic of
CityDaegu
Period07/10/2207/10/26

    Fingerprint

ASJC Scopus subject areas

  • Energy Engineering and Power Technology

Cite this

Lee, J. P., Min, B. D., Kim, J. J., Ryul, K. Y., Kim, T. J., Yoo, D. W., ... Yoo, J. Y. (2008). A new topology for photovoltaic 4 series DC/DC converter with high efficiency under wide load range. In 7th Internatonal Conference on Power Electronics, ICPE'07 (pp. 257-260). [4692388] https://doi.org/10.1109/ICPE.2007.4692388