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A transformerless energy storage system based on a cascade multilevel PWM converter with star configuration
- Source :
- IEEE Transactions on Industry Applications. Sept-Oct, 2008, Vol. 44 Issue 5, p1621, 10 p.
- Publication Year :
- 2008
-
Abstract
- 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. Index Terms--Active-power control, cascade multilevel pulsewidth-modulation (PWM) converter, electric double-layer capacitor (EDLC), energy storage system, output-power leveling, renewable energy sources, voltage-balancing control.
Details
- Language :
- English
- ISSN :
- 00939994
- Volume :
- 44
- Issue :
- 5
- Database :
- Gale General OneFile
- Journal :
- IEEE Transactions on Industry Applications
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.186991998