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A Transformerless Back-To-Back (BTB) System Using Modular Multilevel Cascade Converters for Power Distribution Systems
- Source :
- IEEE Transaction on Power Electronics. 30(No. 4):1866-1875
- Publication Year :
- 2015
- Publisher :
- IEEE, 2015.
-
Abstract
- This paper presents an intensive discussion on a transformerless back-to-back (BTB) system using modular multilevel cascade converters based on double-star chopper cells (MMCC-DSCC). It is expected to be applied to a power distribution system with many distributed power generators. This paper designs, constructs, and tests a three-phase 200-V, 10-kW DSCC-based BTB system installed on a 200-V, 40-kW power distribution simulator consisting of two radial feeders. Experimental results show that the BTB system can mitigate power-flow imbalance between the two feeders. Moreover, the zero-sequence current circulating between the two feeders can be suppressed to be as small as 10 mA ( $0.02\%$ ) in rms by connecting a common-mode choke to the common dc link of the BTB system.
Details
- Language :
- English
- Volume :
- 30
- Issue :
- No. 4
- Database :
- OpenAIRE
- Journal :
- IEEE Transaction on Power Electronics
- Accession number :
- edsair.doi.dedup.....9a773eb31e7ac130e1fea4ad5c96ad92