High efficiency grid-connected multi string PV PCS using H-bridge multi-level topology

Jongpil Lee, Byungduk Min, Taejin Kim, Honnyong Cha, Dongwook Yoo, Jiyoon Yoo

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

9 Citations (Scopus)

Abstract

In this paper, a novel topology is proposed that can significantly increase the efficiency of photovoltaic (PV) system. The multi level topology consists of several H-bridge cells connected in series, each one connected to a string of PV modules. The proposed topology offers advantages such as the operation at lower switching frequency or lower current ripple compared to conventional two level topologies. The control algorithm permits the independent control of each dc link voltage, enabling, in this way, the tracking of the maximum power point for each string of PV modules. The proposed topology is implemented for 240kW power conditioning system. The experimental results show that the proposed topology has good performance.

Original languageEnglish
Title of host publication8th International Conference on Power Electronics - ECCE Asia
Subtitle of host publication"Green World with Power Electronics", ICPE 2011-ECCE Asia
Pages2557-2560
Number of pages4
DOIs
Publication statusPublished - 2011
Event8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia - Jeju, Korea, Republic of
Duration: 2011 May 302011 Jun 3

Publication series

Name8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia

Other

Other8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia
CountryKorea, Republic of
CityJeju
Period11/5/3011/6/3

Keywords

  • Multi-level inverter
  • Multi-string PV PCS
  • Renewable green energy

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Lee, J., Min, B., Kim, T., Cha, H., Yoo, D., & Yoo, J. (2011). High efficiency grid-connected multi string PV PCS using H-bridge multi-level topology. In 8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia (pp. 2557-2560). [5944736] (8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia). https://doi.org/10.1109/ICPE.2011.5944736