US 12,296,722 B2
Main circuit of traction system and control method therefor and rail vehicle
Long Wang, Hunan (CN); Xinjian Chen, Hunan (CN); Bin Zhang, Hunan (CN); Wenguang Chen, Hunan (CN); Chaolu Chen, Hunan (CN); Rong Mou, Hunan (CN); Anhui Ji, Hunan (CN); Xiong Liu, Hunan (CN); Nannan Xu, Hunan (CN); Jun Yang, Hunan (CN); Zhengliang Gao, Hunan (CN); Haobin Xiong, Hunan (CN); Mingliang Zeng, Hunan (CN); and Dongpo Zhu, Hunan (CN)
Assigned to ZHUZHOU CRRC TIMES ELECTRIC CO., LTD., Hunan (CN)
Appl. No. 17/254,310
Filed by ZHUZHOU CRRC TIMES ELECTRIC CO., LTD., Hunan (CN)
PCT Filed Nov. 22, 2018, PCT No. PCT/CN2018/116883
§ 371(c)(1), (2) Date Dec. 21, 2020,
PCT Pub. No. WO2019/242226, PCT Pub. Date Dec. 26, 2019.
Claims priority of application No. 201810644334.0 (CN), filed on Jun. 21, 2018.
Prior Publication US 2021/0114466 A1, Apr. 22, 2021
Int. Cl. B60L 9/18 (2006.01); B60L 7/16 (2006.01); B60M 1/30 (2006.01); B61H 9/04 (2006.01); B61L 25/06 (2006.01)
CPC B60L 9/18 (2013.01) [B60L 7/16 (2013.01); B60M 1/30 (2013.01); B61H 9/04 (2013.01); B61L 25/065 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for controlling a main circuit of a traction system, comprising:
under a braking condition,
controlling a protection module to be turned off, wherein the protection module comprises a first controllable switch and a second controllable switch that are connected in series with opposite polarities, and the first controllable switch and the second controllable switch are integrated into a current conversion module of the main circuit of the traction system;
controlling the protection module to be turned on and monitoring a first current detected by a first current sensor in a case that a rail vehicle runs on a charged third rail; and
controlling the protection module to be turned off and monitoring whether the rail vehicle runs on a charged third rail in a case that the first current is less than a first preset value.