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    • 8. 发明公开
    • Determining a temperature of a brake resisitor
    • Ermittlung der Temperatur eines Bremswiderstandes。
    • EP1610454A1
    • 2005-12-28
    • EP05090156.0
    • 2005-05-30
    • Bombardier Transportation GmbH
    • Still, Ludwig
    • H02P3/18G01R27/12G01R27/14B60L3/12B60L7/22
    • G01K7/223G01K7/00
    • The present invention relates to the determination of a temperature of a brake resistor (3), in particular a brake resistor (3) for dissipating kinetic energy of a railroad traction vehicle into heat. During operation of the brake resistor (3), a resistor current carried by the brake resistor (3) is repeatedly switched on and off, so that a plurality of consecutive current pulses are generated, wherein the commencement of each of the pulses is defined by a respective point in time (ta) when the resistor current is switched on. An electric voltage UD across the brake resistor (3) is measured during at least one of the current pulses by performing a voltage measurement. The resistor current iRB is measured during the at least one of the current pulses by performing a current measurement. The current measurement is performed not earlier than the end of a first time interval (k) of defined length after commencement of the pulse. The temperature of the brake resistor (3), or an equivalent quantity, is determined using the electric voltage UD, the resistor current iRB and a temperature coefficient - or equivalent information - of the brake resistor (3).
    • 本发明涉及制动电阻器(3)的温度的确定,特别是用于将铁路牵引车辆的动能耗散到热中的制动电阻器(3)。 在制动电阻器(3)的操作期间,制动电阻器(3)承载的电阻电流被重复接通和断开,从而产生多个连续的电流脉冲,其中每个脉冲的开始由 电阻电流接通时的相应时间点(ta)。 通过执行电压测量,在至少一个电流脉冲期间测量穿过制动电阻器(3)的电压UD。 通过执行电流测量,在至少一个电流脉冲期间测量电阻器电流iRB。 电流测量不迟于脉冲开始之后的限定长度的第一时间间隔(k)的结束进行。 使用制动电阻器(3)的电压UD,电阻器电流iRB和温度系数或等效信息来确定制动电阻器(3)的温度或等效量。