Multi-Time Scale Operational Principle for Battery Integrated Modular Multilevel Converter

被引：0
|
作者：
Li N. [1 ]
Gao F. [1 ]
机构：
[1] Key Laboratory of Power System Intelligent Dispatch and Control, Shandong University, Jinan
来源：
Gao, Feng (fgao@sdu.edu.cn) | 2017年 / China Machine Press卷 / 32期
关键词：
Battery energy storage system; Depth of discharge; Modular multilevel converter; State of charge; State of health;
D O I：
10.19595/j.cnki.1000-6753.tces.L70353
中图分类号：
学科分类号：
摘要：
The battery energy storage system (BESS) using modular multilevel converter (MMC) as interface converter could implement a direct connection to the grid as well as smooth the output power of renewable energy sources. For the large-scale battery energy storage system, it is a major concern of both industry and academic to extend the lifespan of it. To address this issue, this paper proposes a multi-time scale operational principle with three control levels employed. Different control objects are defined to each level and the output power of different battery packs are determined based on their relative state of health (R-SOH). Thus, the SOH of different battery packs are concentrated and the lifespan of whole system is prolonged subsequently. At last, both simulation and experimental results are proposed to validate the effectiveness and feasibility of this novel multi-time scale operational principle. © 2017, The editorial office of Transaction of China Electrotechnical Society. All right reserved.
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页码：47 / 56
页数：9
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