The invention relates to the technical field of electric power control, and discloses a back electromotive force suppression system and method for an electric locomotive and the electric locomotive. The counter potential suppression system is sequentially connected with a four-quadrant rectifier, a transformer and a power grid, and a permanent magnet traction motor is used for driving a locomotive to operate under a traction working condition and braking the locomotive under a braking working condition; one end of the traction inverter is connected with the four-quadrant rectifier and the other end is connected with the permanent magnet traction motor; the isolating switch is arranged between the permanent magnet traction motor and the traction inverter; the power battery system is connected with the traction inverter; the traction control system is connected with the traction inverter; the auxiliary system is connected with the traction inverter to consume electric energy generated by the permanent magnet traction motor; wherein the traction inverter, the power battery system and the auxiliary system share an intermediate direct current loop. The counter electromotive force suppression system reduces the influence of counter electromotive force on the locomotive traction converter system when the electric locomotive passes through the neutral section, improves the operation stability of the electric locomotive and prolongs the service life of the contactor.
本发明涉及电力控制技术领域,公开一种用于电力机车的反电势抑制系统、方法及电力机车。该反电势抑制系统依次连接四象限整流器、变压器和电网,永磁牵引电机用于在牵引工况驱动机车运行且在制动工况制动机车;牵引逆变器的一端连接四象限整流器另一端连接永磁牵引电机;隔离开关设置于永磁牵引电机和牵引逆变器之间;动力电池系统连接牵引逆变器;牵引控制系统连接牵引逆变器;辅助系统连接牵引逆变器以消耗永磁牵引电机产生的电能;其中,牵引逆变器、动力电池系统、辅助系统共用中间直流回路。该反电势抑制系统在电力机车过分相区时降低反电势对机车牵引变流系统的影响,提高电力机车运行的稳定性和接触器寿命。
Counter-electromotive force suppression system and method for electric locomotive and electric locomotive
用于电力机车的反电势抑制系统、方法及电力机车
23.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
Europäisches Patentamt | 2025
|METHOD FOR CONTROLLING COUNTER-ELECTROMOTIVE FORCE IN LOCOMOTIVE
Europäisches Patentamt | 2023
|Steam locomotive versus electric locomotive
Engineering Index Backfile | 1907
|Electric locomotive, electric locomotive bogie and bogie driving system
Europäisches Patentamt | 2020
|