Open Access

ARTICLE

Regenerative Braking Energy Recovery System of Metro Train Based on Dual-Mode Power Management

Feng Zhao, Xiaotong Zhu^*, Xiaoqiang Chen, Ying Wang
School of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
* Corresponding Author: Xiaotong Zhu. Email:

Energy Engineering https://doi.org/10.32604/ee.2024.049762

Received 17 January 2024; Accepted 30 April 2024; Published online 31 May 2024

Abstract

In order to fully utilize the regenerative braking energy of metro trains and stabilize the metro DC traction busbar voltage, a hybrid regenerative braking energy recovery system with a dual-mode power management strategy is proposed. Firstly, the construction of the hybrid regenerative braking energy recovery system is explained. Then, based on the power demand of low-voltage load in metro stations, a dual-mode power management strategy is proposed to allocate the reference power of each system according to the different working conditions, and the control methods of each system are set. Finally, the correctness and effectiveness of the dual-mode strategy are verified through simulation, and the proposed braking energy utilization scheme is compared with other single-form utilization schemes. The results illustrate that the hybrid system with the dual-mode strategy can effectively recycle the regenerative braking energy of metro train and inhibit the busbar voltage fluctuation; the proposed braking energy utilization scheme has certain advantages on energy recovery and DC bus voltage stabilization compared with other single-form schemes; the proposed power management strategy can correctly allocate the reference power of each system with a lower construction cost.

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Keywords

Metro train; regenerative braking energy; energy feed-back system; energy storage system; power management

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