Research on the ultracapacitor/battery hybrid system

Wang, Qi; Sun, Yanchao; Kunhua, Chen; Huang, Yonghong; Ji, Xiaofu

doi:10.1109/ccdc.2013.6561742

Cited by 5 publications

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In terms of control strategies, the traditional charge and discharge control strategies usually adopt voltage–current double closed loop control with full state variable feedback [14], which directly sets the charge and discharge voltage threshold and detects the traction network voltage to determine the working mode of the ESS. Such control strategies are simple and easy to implement.…”

Section: Introductionmentioning

confidence: 99%

Hybrid energy management strategy based on dynamic setting and coordinated control for urban rail train with PMSM

Wang

Luo

Zhou

et al. 2021

IET Renewable Power Gen

View full text Add to dashboard Cite

Due to the short distance between stations, frequent acceleration and braking for urban rail trains cause voltage fluctuation in the traction network and the regenerative braking energy loss. In this study, a hybrid energy storage system (HESS) was proposed to recover braking energy and stabilize the traction network voltage, where the on-board ultracapacitors were used to accommodate the rapid exchange of acceleration and braking energy of the permanent magnet traction system while the lithium batteries installed in the bilateral stations provided stable and long-lasting energy exchange, which can stabilize traction network voltage and be charged at off-peak night time. In order to realize the energy coordinated control between the permanent magnet traction system and HESS, a real-time energy management strategy was proposed to dynamically allocate the traction power based on the principle of giving priority to on-board ultracapacitors while lithium batteries as auxiliary power supply. Moreover, the charging and discharging voltage thresholds of the lithium batteries were dynamically set according to train positions and their charge status. Comparing with the traditional strategies, the RT-LAB semiphysical real-time simulation shows that the proposed strategy can provide more effective energy allocation, and stabilize the voltage fluctuation while maximizing the energy saving.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

show abstract

Section: Introductionmentioning

confidence: 99%