A new topology for PV DC/DC converter with high efficiency under wide load range

Jong Pil Lee, Byung Duk Min, Dong Wook Yoo, Tae Jin Kim, Ji Yoon Yoo

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

16 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 20kW prototype as the PV dc/dc converter is introduced to experimentally verify the proposed topology.

Original languageEnglish
Title of host publication2007 European Conference on Power Electronics and Applications, EPE
DOIs
Publication statusPublished - 2007
Event2007 European Conference on Power Electronics and Applications, EPE - Aalborg, Denmark
Duration: 2007 Sep 22007 Sep 5

Publication series

Name2007 European Conference on Power Electronics and Applications, EPE

Other

Other2007 European Conference on Power Electronics and Applications, EPE
CountryDenmark
CityAalborg
Period07/9/207/9/5

Keywords

  • DC-DC converter
  • High efficiency
  • PV PCS

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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  • Cite this

    Lee, J. P., Min, B. D., Yoo, D. W., Kim, T. J., & Yoo, J. Y. (2007). A new topology for PV DC/DC converter with high efficiency under wide load range. In 2007 European Conference on Power Electronics and Applications, EPE [4417538] (2007 European Conference on Power Electronics and Applications, EPE). https://doi.org/10.1109/EPE.2007.4417538