The invention provides a railway vehicle and a control method and device thereof. A protection circuit is arranged in a power supply circuit of a traction inverter of the railway vehicle, the tractioninverter is used for supplying power to a traction motor of the railway vehicle, and the protection circuit comprises a brake chopper and a brake resistor which are connected in series. The method comprises the following steps: detecting the voltage of a power supply bus of the traction inverter; judging whether the voltage of the power supply bus is greater than a preset voltage threshold; if the voltage of the power supply bus is greater than the preset voltage threshold value, sending a work starting instruction to the brake chopper to control the brake chopper to start to work; and controlling the brake chopper to stop working or start working according to the continuous working time of the brake chopper. Therefore, potential safety hazards caused by long-time continuous work of the brake resistor can be eliminated, and the safety of the traction inverter is greatly improved.
本发明提出了一种轨道车辆及其控制方法、装置,其中,轨道车辆的牵引逆变器的供电电路中设置有保护电路,牵引逆变器用于给轨道车辆的牵引电机供电,保护电路包括串联连接的制动斩波器和制动电阻,方法包括:检测牵引逆变器的供电母线电压;判断供电母线电压是否大于预设电压阈值;如果供电母线电压大于预设电压阈值,则发送开始工作指令给制动斩波器,以控制制动斩波器开始工作;根据制动斩波器的持续工作时间控制制动斩波器停止工作或者开始工作。由此,能够消除因制动电阻长时间持续工作导致的安全隐患,从而大大提高了牵引逆变器的安全性。
Railway vehicle and traction inverter thereof
轨道车辆及其牵引逆变器
2020-07-03
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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