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    • 99. 发明专利
    • Power converter
    • 电源转换器
    • JP2005124261A
    • 2005-05-12
    • JP2003353820
    • 2003-10-14
    • Hitachi Car Eng Co LtdHitachi Ltd株式会社日立カーエンジニアリング株式会社日立製作所
    • FUJINO SHINICHIHASHIMOTO KEITAINNAMI TOSHIYUKITSUCHIYA MASANORI
    • H02P27/06H02P27/08H02P7/63
    • B60L7/06B60L7/14H02P3/22H02P27/08H02P29/0241Y02T10/642
    • PROBLEM TO BE SOLVED: To provide a highly reliable overvoltage suppressing function at a low cost in a power converter.
      SOLUTION: The power converter comprises: a power converting circuit for supplying a motor with power from a battery while converting when the motor is driven, and supplying the battery with power generated from the motor while converting; and a circuit for driving the power converting circuit. The power converting circuit comprises a plurality of pairs of switching elements where one of a pair of switching elements is arranged on the upper arm while the other is arranged on the lower arm and each pair corresponds with each phase of the motor. The driving circuit turns on all switching elements of one arm and turns off all switching elements of the other arm when a voltage being applied to the power converting circuit increases thus short-circuiting the output terminals of the motor.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:在功率转换器中以低成本提供高度可靠的过电压抑制功能。 电源转换器包括:电力转换电路,用于在电动机被驱动时转换时向电动机提供电力,同时在转换时向电池供应由电动机产生的电力; 以及用于驱动电力转换电路的电路。 电力转换电路包括多对开关元件,其中一对开关元件中的一个开关元件布置在上臂上,而另一对开关元件设置在下臂上,并且每对开关元件对对应于电动机的各相。 驱动电路打开一个臂的所有开关元件,并且当施加到功率转换电路的电压增加时使另一个臂的所有开关元件断开,从而短路电动机的输出端子。 版权所有(C)2005,JPO&NCIPI