Controlled-Type ZVS Technique without Auxiliary Components for Micro-inverters

    Authors

    Q. Zhang; D. H. Zhang; H. B. Hu; J. Shen;I. Batarseh

    Comments

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    Abbreviated Journal Title

    J. Power Electron.

    Keywords

    BCM; Inverters; Soft-switching techniques; PERFORMANCE EVALUATION; SOFT; SWITCHES; SNUBBER; Engineering, Electrical & Electronic

    Abstract

    This paper proposes a Boundary Current Mode (BCM) control scheme to realize soft switching on a conventional single phase full bridge DC/AC inverter. This technique with the advantages of no auxiliary components, low cost, high efficiency, and simple in control, is attractive for micro-inverter applications. The operation principle and characteristic waveforms of the proposed soft switching technique are analyzed in theory. A digital controller is provided based on that theory. To balance the requirements of efficiency, switching frequency, and inductor size, the design considerations are discussed in detail to guide in BCM inverter construction. A 150W prototype is built under these guidelines to implement the BCM control scheme. Simulation and experiment results demonstrate the feasibilities of the proposed soft switching technique.

    Journal Title

    Journal of Power Electronics

    Volume

    13

    Issue/Number

    6

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    919

    Last Page

    927

    WOS Identifier

    WOS:000327282800001

    ISSN

    1598-2092

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