This paper describes a 6.6-kV transformerless energy storage system based on a cascade PWM converter with star-configuration. The system is in tended 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 verily the viability and effectiveness of the 6.6-kV system. © 2007 IEEE.
CITATION STYLE
Maharjan, L., Yoshii, T., Inoue, S., & Akagi, H. (2007). A transformerless energy storage system based on a cascade PWM converter with star-configuration. In Fourth Power Conversion Conference-NAGOYA, PCC-NAGOYA 2007 - Conference Proceedings (pp. 751–757). https://doi.org/10.1109/PCCON.2007.373051
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