ACTIVE SOH COOPERATIVE CONTROL SCHEME OF MICROGRID ENERGY STORAGE SYSTEMS BASED ON NO-COMMUNICATION

Wu Qingfeng; Yang Kaiyi; Yu Shaojuan; Liu Liqun; Chen Yutong; Dong Jia

doi:10.19912/j.0254-0096.tynxb.2021-1413

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (5) : 40-47. DOI: 10.19912/j.0254-0096.tynxb.2021-1413

ACTIVE SOH COOPERATIVE CONTROL SCHEME OF MICROGRID ENERGY STORAGE SYSTEMS BASED ON NO-COMMUNICATION

Wu Qingfeng¹, Yang Kaiyi¹, Yu Shaojuan¹, Liu Liqun¹, Chen Yutong¹, Dong Jia²

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Abstract

Aiming at the problem that the traditional P-f droop control cannot achieve the state of health （SOH） balance of distributed battery energy storage systems （DBESS） in the AC microgrid, this paper proposes an active SOH cooperative control scheme for DBESS in the microgrid based on no communication. The scheme studies the mechanism of droop control to adjust SOH, and adds the depth of discharge （DOD） information of DBESS to the traditional droop control, so that DBESS can translate the droop curve according to the SOH state, adjust the output active power of DBESS inverter, and realize the SOH cooperative control between DBESS groups. A small signal model is established to analyze the influence of control parameters on system stability. This scheme is an active control scheme, which has the advantages of no communication and shunt resistance and low cost. The feasibility and effectiveness of the proposed strategy are verified by simulation model and experimental platform.

Key words

battery pack / microgrids / decentralized control / state of health / cooperative control / depth of discharge

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Wu Qingfeng, Yang Kaiyi, Yu Shaojuan, Liu Liqun, Chen Yutong, Dong Jia. ACTIVE SOH COOPERATIVE CONTROL SCHEME OF MICROGRID ENERGY STORAGE SYSTEMS BASED ON NO-COMMUNICATION[J]. Acta Energiae Solaris Sinica. 2023, 44(5): 40-47 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1413

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