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    Three-phase zero-current-transition (ZCT) inverters and rectifiers with three auxiliary switches

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    Downloads: 90
    Publication Date
    2002-01-08
    Filing Date
    2000-12-15
    Inventor
    Lee, Fred C.
    Li, Yong Bin
    Metadata
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    Abstract
    Zero current transition (ZCT) topologies are presented for three-phase inverters and rectifiers. Such devices are used for example in AC adjustable speed drives for so-called zero-emission vehicles (i.e., electric and hybrid combustion/electric automobiles). Compared to existing three-phase ZCT techniques, the number of auxiliary switches is reduced from six to three, while not altering the necessary device rating. Correspondingly, the number of gate-drivers for the auxiliary switches is also reduced to three. Meanwhile, the merits of the existing three-phase ZCT techniques are still retained, i.e., all the main switches and the auxiliary switches are turned on and turned off under zero-current conditions, and the independent commutation for each main switch is achieved. The desired soft-switching features are achieved. Therefore, this invention will contribute to more cost-effective, reliable, and efficient high-performance three-phase inverters and rectifiers.
    Assignee
    Virginia Tech Intellectual Properties, Inc.
    Patent Number
    6337801
    Application Number
    9736428
    Source URL
    http://pimg-fpiw.uspto.gov/fdd/01/378/063/0.pdf
    Primary/U.S. Class
    363/127
    Other/U.S. Class
    363/129
    363/132
    363/137
    CPC Class
    H02M7/48
    H02M2001/0048
    Patent Type
    utility
    URI
    http://hdl.handle.net/10919/72444
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    • Virginia Tech Patents [688]

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