Hybrid ZVS BCM Current Controlled Three-Phase Microinverter

    Authors

    A. Amirahmadi; H. B. Hu; A. Grishina; Q. Zhang; L. Chen; U. Somani;I. Batarseh

    Comments

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    Abbreviated Journal Title

    IEEE Trans. Power Electron.

    Keywords

    Boundary conduction mode (BCM) modulation; three-phase microinverter; zero-voltage switching (ZVS); RESONANT DC-LINK; ZERO-CURRENT; TRANSITION INVERTER; AUXILIARY SWITCHES; EMI REDUCTION; MODULATION; CONVERTERS; Engineering, Electrical & Electronic

    Abstract

    This paper presents a new zero-voltage switching (ZVS) control method that is suitable for low-power applications such as three-phase microinverters. The proposed hybrid control method increases the efficiency and power density of the microinverters and features both reduced number of components and easy digital implementation. ZVS is achieved by controlling the inductor current bidirectional in every switching cycle and results in lower switching losses, higher operating frequency, and reduced size and cost of passive components, especially magnetic cores. A 400 W prototype of a three-phase inverter and its hybrid control system have been designed and tested under different conditions to verify the effectiveness of the controller. Efficiency measurement and comparison of the three different current modulation schemes have been conducted, and the inverter exhibits peak efficiency of 98.4% with fixed reverse current boundary conduction mode modulation.

    Journal Title

    Ieee Transactions on Power Electronics

    Volume

    29

    Issue/Number

    4

    Publication Date

    1-1-2014

    Document Type

    Article

    Language

    English

    First Page

    2124

    Last Page

    2134

    WOS Identifier

    WOS:000329990500055

    ISSN

    0885-8993

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