A Transformerless Energy Storage System Based on a Cascade PWM Converter with Star-Configuration
A Transformerless Energy Storage System Based on a Cascade PWM Converter with Star-Configuration
复制标题
基于星型配置的级联PWM变换器的无变压器储能系统
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
H. Akagi
中科院分区：
文献类型：
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作者：
L. Maharjan;T. Yoshii;S. Inoue;H. Akagi
介绍了一种基于星形结构级联型PWM变流器的6.6KV无变压器储能系统。该系统旨在使电力系统可靠和高效，并提高电力系统的电能质量。本文重点研究了储能系统正常运行所必需的有功功率控制和电压平衡控制。设计、建造了一套200V、10kW、8.8kJ的小型化实验室系统，并用大容量的电解电容器取代了双电层电容器。实验室系统的实验结果验证了6.6KV系统的可行性和有效性。
This paper describes a 6.6-kV transformerless energy storage system based on a cascade PWM converter with star-configuration. The system is intended to make a power system reliable and efficient, and to improve power quality in power systems. The paper pays attention to active-power control and voltage-balancing control that are indispensable for proper operation of the energy storage system. A 200-V, 10-kW, 8.8-kJ down-scaled laboratory system is designed, constructed, and tested replacing EDLCs (electric double layer capacitors) with large-capacity electrolytic capacitors. Experimental results obtained from the laboratory system verify the viability and effectiveness of the 6.6-kV system.