Full Current-Type Control-Based Hybrid Energy Storage System

Jiahui Ren, Wenli Lin, Xinbo Liu, Shuiyuan He, Zhonghao Dongye and Lijun Diao
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Jiahui Ren: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Wenli Lin: Beijing Institute of Spacecraft System Engineering, Beijing 100094, China
Xinbo Liu: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Shuiyuan He: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Zhonghao Dongye: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Lijun Diao: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China

Energies, 2022, vol. 15, issue 8, 1-13

Abstract: With greater power density, a hybrid power source that combines supercapacitors and batteries has a wide range of applications in pulse-operated power systems. In this paper, a supercapacitor/battery semi-active hybrid energy storage system (HESS) with a full current-type control strategy is presented. The studied HESS is composed of batteries, supercapacitors, and a bidirectional buck–boost converter. The converter is controlled such that supercapacitors supply load power pulses, and batteries provide the power in steady state. To realize the fast compensation of the supercapacitors to the load power pulses, a power distribution module based on hysteresis control theory is designed in the control system. Moreover, the control strategy does not require the model parameters of the converter and supercapacitors, so the control system is simplified. A complete configuration scheme and cost analysis of the proposed HESS are also presented. Obtained results show that the proposed supercapacitor/battery semi-active HESS has good performance in terms of dynamic response, weight, and energy utilization coefficient (EUC).

Keywords: hybrid energy storage system; pulsed load; bidirectional buck–boost converter; Li-ion battery; supercapacitor (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: 2022
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