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    • 3. 发明申请
    • BIDIRECTIONAL POWER CONVERSION WITH FAULT-HANDLING CAPABILITY
    • 具有故障处理能力的双向功率转换
    • WO2014109989A2
    • 2014-07-17
    • PCT/US2014010353
    • 2014-01-06
    • ABB RESEARCH LTDBALA SANDEEPCARR JOSEPH A
    • BALA SANDEEPCARR JOSEPH A
    • H02M1/32
    • H02M7/483H02M1/32H02M7/487H02M2001/325H02M2007/4835Y02B70/126
    • A power conversion system (100) includes a unipolar bidirectional power converter (102) with DC terminals and a first controller (106), and a bipolar bidirectional power converter (104) with DC terminals connected in series with the DC terminals of the unipolar bidirectional power converter (102) and a second controller (108). The first controller (106) is operable to cause only a positive-valued DC voltage across the DC terminals of the unipolar bidirectional power converter (102). The second controller (108) is operable to cause a positive-valued or negative-valued DC voltage across the DC terminals of the bipolar bidirectional power converter (104) so that a total voltage of the power conversion system (100) is the sum of the positive-valued or negative-valued DC voltage across the DC terminals of the bipolar bidirectional power converter (104) and the positive-valued DC voltage across the DC terminals of the unipolar bidirectional power converter (102).
    • 电力转换系统(100)包括具有直流端子的单极双向功率转换器(102)和第一控制器(106),以及双极双向功率转换器(104),其中DC端子与单极双向的DC端串联 功率转换器(102)和第二控制器(108)。 第一控制器(106)可操作以仅在单极双向功率转换器(102)的DC端子上引起正值的直流电压。 第二控制器(108)可操作以在双极双向功率转换器(104)的DC端上引起正值或负值的DC电压,使得电力转换系统(100)的总电压为 双极双向功率转换器(104)的直流端子两端的正值或负值的直流电压以及单极双向功率转换器(102)的直流端子两端的正值的直流电压。