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    Single-stage input current shaping technique with voltage-doubler rectifier front-end

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    6147882.pdf (1.650Mb)
    Downloads: 196
    Publication Date
    2000-11-14
    Filing Date
    1998-12-19
    Inventor
    Lee, Fred C.
    Jovanovic, Milan M.
    Huber, Laszlo
    Zhang, Jindong Henry
    Metadata
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    Abstract
    A single-stage input-current-shaping (S.sup.2 ICS) converter of the present invention integrates a voltage-doubler-rectifier front-end with a DC/DC output stage. Two families of voltage-doubler S.sup.2 ICS converters are disclosed. In one family, a 2-terminal dither source is provided between a boost inductor and a common input terminal of a storage capacitor and the DC/DC output stage. The 2-terminal dither source includes two paths connected in parallel: a first path for charging and a second path for discharging the boost inductor at a high frequency (HF). In the other family, a 3-terminal dither source includes a third terminal coupled to a pulsating node of the DC/DC output stage. In the 3-terminal dither source, the HF charging path of the boost inductor is coupled between the boost inductor and the pulsating node of the DC/DC output stage, while the HF discharging path of the boost inductor is coupled between the boost inductor and the common input terminal of the storage capacitor and the DC/DC output stage. Due to the voltage-doubler-rectifier front-end, reduction of line-current harmonics can be achieved with a higher conversion efficiency, as compared to a corresponding S.sup.2 ICS converter with a conventional full-bridge rectifier. In addition, a converter of the present invention requires storage capacitors of a lower voltage rating and a smaller total capacitance than the conventional S.sup.2 ICS counterpart. The present invention thereby reduces the size and the cost of the power supply.
    Assignee
    Virginia Tech Intellectual Properties, Inc.
    Delta Electronics, Inc.
    Patent Number
    6147882
    Application Number
    9215758
    Source URL
    http://pimg-fpiw.uspto.gov/fdd/82/478/061/0.pdf
    Primary/U.S. Class
    363/39
    Other/U.S. Class
    363/17
    363/20
    363/61
    363/143
    CPC Class
    H02M1/4258
    H02M1/10
    Y02B70/126
    Patent Type
    utility
    URI
    http://hdl.handle.net/10919/72427
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