A high-efficiency grid-tie battery energy storage system
A high-efficiency grid-tie battery energy storage system
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DOI：
10.1109/tpel.2010.2096562
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发表时间：
2011-08
影响因子：
6.7
通讯作者：
Hao Qian;Jianhui Zhang;J. Lai;Wensong Yu
中科院分区：
文献类型：
--
作者：
Hao Qian;Jianhui Zhang;J. Lai;Wensong Yu
锂离子电池储能系统以其高充放电效率和高能量密度的特点，开始成为最受欢迎的储能系统形式。本文提出了一种基于锂离子电池的高效并网储能系统，该系统由基于lifepo4电池的储能系统和高效双向交直流变换器组成。电池管理系统估算每个电池的充电状态和健康状态，并应用主动充电均衡来平衡电池组中所有电池的电量。双向交流-直流转换器作为电池组和交流电网之间的接口。采用高效率的对电流半桥式逆变器和导纳补偿准比例谐振控制器，保证了高质量的电能质量和精确的潮流控制。设计并实现了一个1千瓦的原型，以验证所提出的架构和系统性能。
Lithium-ion-based battery energy storage system has started to become the most popular form of energy storage system for its high charge and discharge efficiency and high energy density. This paper proposes a high-efficiency grid-tie lithium-ion-battery-based energy storage system, which consists of a LiFePO4-battery-based energy storage and a high-efficiency bidirectional ac-dc converter. The battery management system estimates the state of charge and state of health of each battery cell and applies active charge equalization to balance the charge of all the cells in the pack. The bidirectional ac-dc converter works as the interface between the battery pack and the ac grid. A highly efficient opposed-current half-bridge-type inverter along with an admittance-compensated quasi-proportional resonant controller is adopted to ensure high power quality and precision power flow control. A 1-kW prototype has been designed and implemented to validate the proposed architecture and system performance.