An active discharge circuit for an electric vehicle inverter, the active discharge circuit being intended to be connected in parallel with a DC link capacitor connected between a positive line and a negative line of a DC power link, the circuit comprises a dissipative current source, a switch connected in series with the current source between the DC lines, and a controller connected to the switch and arranged to apply an activation signal according to a control signal, the activation signal placing the switch in an on state, the current source is configured to draw the discharge current and dissipate any energy stored in the DC link capacitor when the switch is in an on state. As long as the switch is closed by the activation signal, the current source draws a constant current and dissipates power, and the voltage across the DC link capacitor decreases linearly.

    一种用于电动交通工具逆变器的有源放电电路,该有源放电电路旨在与连接在DC功率链路的正线和负线之间的DC链路电容器并联连接,其中,电路包括耗散电流源、在DC线之间与电流源串联连接的开关以及连接到开关并被布置成根据控制信号施加激活信号的控制器,激活信号将开关置于导通状态,其中,电流源被配置成在开关处于导通状态时吸取放电电流并耗散存储在DC链路电容器中的任何能量。只要开关通过激活信号闭合,电流源就会吸取恒定电流并耗散功率,以及DC链路电容器两端的电压就会线性降低。


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    Title :

    SECURE ACTIVE DISCHARGE CIRCUIT FOR INVERTER IN VEHICLE


    Additional title:

    用于交通工具中逆变器的安全有源放电电路


    Contributors:

    Publication date :

    2022-06-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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