Transformerless, 9-levels DC/AC hybrid topology based on single DC source, for renewable power applications

This paper introduces a novel transformerless multilevel hybrid conversion topology, presents as most important contribution the generation of two isolated DC voltage sources without transformers, for applications in DC/AC cascade hybrid multilevel converters. This is achieved by modifying the tradi...

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Bibliographic Details
Main Authors: Rodri´guez, J.R, Venegas R, V, Moreno-Goytia, E.L, Monroy-Morales, J.L, Hernandez-Angeles, M, Villa-Vargas, F.H, Salgado-Herrera, N.M
Format: Conference Proceeding
Language:English
Subjects:
DC-AC power convertors (invertors)
Other power apparatus and electric machines
Power electronics, supply and supervisory circuits
Online Access:Get full text
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Summary:This paper introduces a novel transformerless multilevel hybrid conversion topology, presents as most important contribution the generation of two isolated DC voltage sources without transformers, for applications in DC/AC cascade hybrid multilevel converters. This is achieved by modifying the traditional DC/DC Buck converter topology; a suitable switching strategy is employed to regulate the isolated DC voltages Vc1 and Vc2 sources at the flying capacitors C1 and C2. The simulation, mathematical model of the converter and the experimental results obtained from the laboratory-scale version of shows the performance of the proposal and its relative advantages.
DOI:10.1049/cp.2014.0854