The stability analysis of traction converter systems under regenerative braking conditions

Authors

Chengye Zhang, School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410114 , China
Ci Tang, School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410114 , China
Yunlong Zeng, School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410114 , China
Qiang Tang, School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410114 , China
Jianqi Li, Hunan Provincial Key Laboratory for Control Technology of Distributed Electric Propulsion Aircraft, Changde 415000 , China

Keywords

traction converter, regenerative braking, stability analysis, cascade system

Abstract

In recent years,the ACDCAC transmission methods have been deployed ubiquitously in the highspeed trains, the grid voltage fluctuation and even instability becomes more frequently which willaffect the safe operations of these equipment. The previous study found that the stability of the power grid will be sufficiently impacted when highspeed trains are in the regenerative braking mode.In order to realize the regenerative braking energy recovery of the traction converter, and to ensure the stable operation of the cascade system between the power grid and the traction converter.In the nonideal power grids, the cause of the stability problem is derived based on the impedance analysis in this paper. The joint simulation verification is conducted among the Simperer, Maxwell, RMxprt, Matlab/Simulink platforms. The results show that improved parameters can overtly reduce the oscillation in the cascade system, and hence enhance the train operation reliability.

DOI

10.19781/j.issn.1673-9140.2021.04.018

First Page

141

Last Page

149

Recommended Citation

Zhang, Chengye; Tang, Ci; Zeng, Yunlong; Tang, Qiang; and Li, Jianqi (2021) "The stability analysis of traction converter systems under regenerative braking conditions," Journal of Electric Power Science and Technology: Vol. 36: Iss. 4, Article 18.
DOI: 10.19781/j.issn.1673-9140.2021.04.018
Available at: https://jepst.researchcommons.org/journal/vol36/iss4/18