A Transformerless Energy Storage System Based on a Cascade Multilevel PWM Converter With Star Configuration
A Transformerless Energy Storage System Based on a Cascade Multilevel PWM Converter With Star Configuration
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DOI：
10.1109/tia.2008.2002180
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发表时间：
2008-09
影响因子：
4.4
通讯作者：
L. Maharjan;S. Inoue;Hirofumi Akagi
中科院分区：
文献类型：
--
作者：
L. Maharjan;S. Inoue;Hirofumi Akagi
介绍了一种基于级联型多电平脉冲宽度调制变换器的无变压器储能系统，该变换器采用星星结构。该系统旨在用于可再生能源的功率均衡，以及用于提高配电系统的电能质量和可靠性。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。一个200 V的10千瓦8.8千焦缩小实验室系统的设计，建造和测试，取代大容量电解电容器的双电层电容器。从实验室系统获得的实验结果验证了6.6 kV储能系统的可行性和有效性。
This paper describes a transformerless energy storage system based on a cascade multilevel pulsewidth modulation converter with star configuration. The system is intended for power leveling of renewable energy sources, as well as for improving power quality and reliability of a power distribution system. This 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 downscaled laboratory system is designed, constructed, and tested, replacing 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 energy storage system.