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

    10 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
    Country/TerritoryKorea, 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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