Energy Efficiency Optimization of Collaborative Power Supply System with Supercapacitor Storages

Yibo Deng, Chushan Li, Yan Deng, Ting Chen, Shaoyu Feng, Yujie Chu and Chengmin Li ()
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Yibo Deng: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Chushan Li: Zhejiang University–University of Illinois at Urbana–Champaign Institute, Zhejiang University, Hangzhou 310027, China
Yan Deng: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Ting Chen: Ningbo CRRC New Energy Technology Co., Ltd., Ningbo 315112, China
Shaoyu Feng: Ningbo CRRC New Energy Technology Co., Ltd., Ningbo 315112, China
Yujie Chu: Ningbo CRRC New Energy Technology Co., Ltd., Ningbo 315112, China
Chengmin Li: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China

Energies, 2023, vol. 16, issue 3, 1-15

Abstract: To solve the challenge of low efficiency and high operation cost caused by intermittent high-power charging in an energy storage tram, this work presents a collaborative power supply system with supercapacitor energy storage. The scheme can reduce the peak power of the transformer, therefore reducing the grid-side capacity and improving the efficiency. However, there is a lack of quantitative analysis on the performance improvement of the solution. The energy efficiency models of critical components are proposed to evaluate the efficiency of the system, and energy efficiency optimization is conducted. Taking an operational tram line as an example, the improved charging efficiency and reduced operating costs are derived. Further, the ground energy storage capacity is designed and implemented. The measured data demonstrates that the energy efficiency of the optimized charging system is improved, which proves its effectiveness and practicability.

Keywords: energy storage; supercapacitor; intermittent power supply system; power supply efficiency (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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