The invention provides a frequency converter for a locomotive, a locomotive braking system and a control method thereof, and relates to the technical field of rail transit. The locomotive comprises a main air reservoir and a motor, the frequency converter for the locomotive comprises a pressure sensor, a control board card and a motor controller, and the pressure sensor at least partially extends into the main air reservoir and detects the pressure value in the main air reservoir; the control board card is connected with the pressure sensor, and the control board card can receive the pressure value and compare the pressure value with a pressure target value to form a comparison result; the control board card can send a control instruction according to the comparison result; the input end of the motor controller is connected with the control board card, the output end of the motor controller is connected with the motor, and the motor controller can receive the control instruction and adjust the output voltage and frequency of the motor controller according to the control instruction so as to control the rotating speed of the motor. The frequency converter for the locomotive can accurately control the pressure of the main air cylinder and improve the response speed and the stability of a brake system.

    本公开提供一种机车用变频器、机车制动系统及其控制方法,涉及轨道交通技术领域。机车包括总风缸及电机,该机车用变频器包括压力传感器、控制板卡以及电机控制器,其中:压力传感器至少部分深入至总风缸内,并检测总风缸内的压力值;控制板卡与压力传感器连接,控制板卡能接收压力值,并将压力值与压力目标值进行比较,以形成比较结果;控制板卡能根据比较结果发出控制指令;电机控制器的输入端与控制板卡连接,输出端与电机连接,电机控制器能接收控制指令,并根据控制指令调整电机控制器的输出电压及频率,以控制电机的转速。本公开的机车用变频器可精确控制总风缸的压力,提高制动系统的响应速度和稳定性。


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    Title :

    Locomotive frequency converter, locomotive braking system and control method of locomotive braking system


    Additional title:

    机车用变频器、机车制动系统及其控制方法


    Contributors:
    LI HUA (author) / WANG GUAN (author) / HAO FUMING (author) / CUI SIHONG (author) / ZHANG CHUNLI (author)

    Publication date :

    2025-01-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F04B Verdrängerkraft- und Verdrängerarbeitsmaschinen für Flüssigkeiten , POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS / B61H Bremsen oder andere Verzögerungseinrichtungen ausgebildet für Schienenfahrzeuge , BRAKES OR OTHER RETARDING APPARATUS PECULIAR TO RAIL VEHICLES



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