A Three-port Flyback for PV Microinverter Applications With Power Pulsation Decoupling Capability

    Authors

    H. B. Hu; S. Harb; X. Fang; D. H. Zhang; Q. Zhang; Z. J. Shen;I. Batarseh

    Comments

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    Abbreviated Journal Title

    IEEE Trans. Power Electron.

    Keywords

    Flyback; microinverter; predictive control; power decoupling; three-port; converter; DC-DC CONVERTER; BIDIRECTIONAL CONVERTER; INVERTER; INPUT; Engineering, Electrical & Electronic

    Abstract

    A novel single-stage photovoltaic (PV) microinverter with power decoupling capability is proposed in this paper. The proposed topology is based on three-port flyback with one port dedicated to power decoupling function so as to reduce the decoupling capacitance, thus allowing for long lifetime film capacitor to be used. Operation principle is analyzed in details. Key design considerations, including key parameter selections, predictive control strategy, and the dc voltage balance control across the power decoupling capacitor, are given in this paper. A 100-W microinverter prototype is built to verify the proposed topology. Experimental results show the proposed topology can achieve power decoupling, while maintaining good efficiency.

    Journal Title

    Ieee Transactions on Power Electronics

    Volume

    27

    Issue/Number

    9

    Publication Date

    1-1-2012

    Document Type

    Article

    Language

    English

    First Page

    3953

    Last Page

    3964

    WOS Identifier

    WOS:000304247800008

    ISSN

    0885-8993

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