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    • 8. 发明公开
    • OVERTEMPERATURE PROTECTION DEVICE FOR MOTOR
    • ÜBERTEMPERATURSCHUTZVORRICHTUNGFÜR摩托车
    • EP2755320A1
    • 2014-07-16
    • EP11872110.9
    • 2011-09-08
    • Mitsubishi Electric Corporation
    • KOJIYA, TomohiroOKADA, Yuruki
    • H02P27/06
    • H02P29/0044B60L3/0061B60L2200/26B60L2220/42H02P5/50H02P27/047H02P29/027H02P29/032H02P29/60H02P29/64H02P2207/01Y02T10/646
    • An over temperature protection device for electric motors applicable to a railway vehicle driving system that operates a plurality of electric motors in parallel using one or a plurality of inverter devices includes a control device 14 configured to control the operation of an inverter device 10 and a protecting device 20 configured to detect, on the basis of a frequency fs including frequency information at the time when the inverter device 10 is applying control for fixing a ratio of a voltage and a frequency to electric motors 12a and 12b and electric currents I1 and I2 of at least one phase flowing to the electronic motors 12a and 12b, an over temperature that could occur in the electric motors 12a and 12b, to generate an over temperature protection signal Tf for protecting the electric motors 12a and 12b from the over temperature, and to output the over temperature protection signal Tf to the control device 14.
    • 适用于使用一个或多个逆变器装置并行操作多个电动机的铁路车辆驱动系统的电动机的过温保护装置包括:控制装置14,被配置为控制逆变器装置10的动作和保护 设备20,被配置为基于包括当逆变器装置10施加用于将电压和频率的比率固定到电动机12a和12b的控制以及电流I1和I2的电流I1和I2的频率信息的频率fs 至少一个流向电动机12a和12b的相位,可能发生在电动机12a和12b中的过温,以产生用于保护电动机12a和12b免受过温度的过温保护信号Tf,以及 将过温保护信号Tf输出到控制装置14。