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    • 79. 发明专利
    • Power converter
    • 电源转换器
    • JP2014014203A
    • 2014-01-23
    • JP2012149659
    • 2012-07-03
    • Mitsubishi Electric Corp三菱電機株式会社
    • MIKI TAKAYOSHINAKAYAMA YASUSHIOI TAKESHIKOBAYASHI TOMOHIRONAKAJIMA YUKIOHASEGAWA SHIGERU
    • H02M7/48
    • Y02E10/56Y02E10/76
    • PROBLEM TO BE SOLVED: To provide a power converter capable of sufficiently cooling wide band gap semiconductor modules even when chips of wide band gap semiconductor elements of small size and small parallel number are used.SOLUTION: The power converter includes: a first power inverter circuit 101 with a silicon semiconductor element; a second power inverter circuit 201 with a wide band gap semiconductor element; and a cooling section 10 with a coolant passage for cooling the first and the second power inverter circuits. The second power inverter circuit 201 is disposed on the upstream side of the coolant passage, and the first power inverter circuit 101 is disposed on the downstream side of the coolant passage.
    • 要解决的问题:即使使用小尺寸和小并联的宽带隙半导体元件的芯片,也可以提供能够充分冷却宽带隙半导体模块的功率转换器。解决方案:功率转换器包括:第一功率逆变器电路 101具有硅半导体元件; 具有宽带隙半导体元件的第二功率逆变器电路201; 以及具有用于冷却第一和第二功率逆变器电路的冷却剂通道的冷却部分10。 第二电力逆变器电路201配置在冷却剂通路的上游侧,第一电力逆变电路101配置在冷却剂通路的下游侧。
    • 80. 发明专利
    • Power conversion system
    • 电力转换系统
    • JP2012178938A
    • 2012-09-13
    • JP2011041114
    • 2011-02-28
    • Hitachi Ltd株式会社日立製作所
    • ICHINOSE MASAYAKIYOFUJI YASUHIROITO TOMOMICHIMIYAGAWA RYOHEIKUNISADA HIDEAKI
    • H02M1/14H02M7/12H02M7/48
    • Y02E10/76
    • PROBLEM TO BE SOLVED: To provide a power conversion system, having unit power converters connected in parallel using DC circuits and AC circuits, capable of suppressing a vibrating current running through the DC circuits comprised of the connected unit power converters by switching the unit power converters connected in parallel, and zero-phase currents running through a ground circuit when the power converter transmits electric power to an AC system through a transformer with a neutral point grounded.SOLUTION: In the power conversion system, a gapped reactor is connected to each of a positive electrode and a negative electrode of a DC terminal of a unit power converter, and the unit power converter is connected to the other unit power converter through the reactor.
    • 要解决的问题:为了提供一种电力转换系统,其具有使用直流电路和交流电路并联的单元电力转换器,能够通过切换连接的单位电力转换器来抑制通过连接的单位电力转换器构成的直流电路的振动电流 并联并联的单相电源转换器,以及当功率转换器通过中性点接地的变压器将电力传输到交流系统时,通过接地电路运行的零相电流。 解决方案:在功率转换系统中,单位功率转换器的直流端子的正电极和负电极之间连接有间隙反应器,单元功率转换器通过 反应堆。 版权所有(C)2012,JPO&INPIT