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A transformerless, single DC-input, DC-AC 7-levels boost converter for PV applications
- Source :
- 2011 North American Power Symposium.
- Publication Year :
- 2011
- Publisher :
- IEEE, 2011.
-
Abstract
- This paper introduces a new transformerless multilevel topology for PV arrays systems. The 7-levels structure ensembles the best characteristics of three basic topologies to obtain a step-up DC-AC converter with only a single DC input and nine power switches. The advantages of the proposed structure are a higher power density, lower harmonic distortion and higher efficiency as no transformer is needed for the grid interconnection. The topology does not require a control scheme for balancing the capacitors voltage. The cases of study clearly show the capabilities of the combination, in cascade, of a DC-DC multilevel boost converter, a DCDC multilevel buck converter and an H-bridge.
Details
- Database :
- OpenAIRE
- Journal :
- 2011 North American Power Symposium
- Accession number :
- edsair.doi...........e08f4a1d9ce74ef6e8046ee660016dd1
- Full Text :
- https://doi.org/10.1109/naps.2011.6025108