Analysis and Control of Battery Energy Storage System Based on Hybrid Active Third-Harmonic Current Injection Converter

Yibin Tao, Jiaxing Lei, Xinzhen Feng, Tianzhi Cao, Qinran Hu and Wu Chen
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Yibin Tao: School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China
Jiaxing Lei: School of Electrical Engineering, Southeast University, Nanjing 210096, China
Xinzhen Feng: China Electric Power Research Institute, Nanjing 210003, China
Tianzhi Cao: State Grid Jibei Electric Power Company Limited, Beijing 100045, China
Qinran Hu: School of Electrical Engineering, Southeast University, Nanjing 210096, China
Wu Chen: School of Electrical Engineering, Southeast University, Nanjing 210096, China

Energies, 2021, vol. 14, issue 11, 1-18

Abstract: This paper applies the emerging hybrid active third-harmonic current injection converter (H3C) to the battery energy storage system (BESS), forming a novel H3C-BESS structure. Compared with the commonly used two-stage VSC-BESS, the proposed H3C-BESS has the capability to reduce the passive components and switching losses. The operation principle of the H3C-BESS is analyzed and the mathematical model is derived. The closed-loop control strategy and controller design are proposed for different operation modes of the system, which include the battery current/voltage control and the injected harmonic current control. In particular, active damping control is realized through the grid current control, which could suppress the LC-filter resonance without the need of passive damping resistors. Simulation results show that the proposed topology and its control strategy have fast dynamic response, with a setup time of less than 4 ms. In addition, the total harmonic distortions of battery current and grid currents are only 2.54% and 3.15%, respectively. The amplitude of the injected harmonic current is only half of the grid current, indicating that the current injection circuit generates low losses. Experimental results are also provided to verify the validity of the proposed solution.

Keywords: battery energy storage system; third-harmonic current injection; high efficiency; active damping (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: 2021
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