Topological design and modulation strategy for buck-boost three-level inverters


Autoria(s): Gao, Feng; Loh, Poh Chiang; Teodorescu, Remus; Blaabjerg, Frede; Vilathgamuwa, D. Mahinda
Data(s)

2009

Resumo

To date, designed topologies for DC-AC inversion with both voltage buck and boost capabilities are mainly focused on two-level circuitries with extensions to three-level possibilities left nearly unexplored. Contributing to this area of research, this paper presents the design of a number of viable buck-boost three-level inverters that can also support bidirectional power conversion. The proposed front-end circuitry is developed from the Cuk-derived buck-boost two-level inverter, and by using the ldquoalternative phase opposition dispositionrdquo modulation scheme, the buck-boost three-level inverters can perform distinct five-level line voltage and three-level phase voltage switching by simply controlling the active switches located in the designed voltage boost section of the circuits. As a cost saving option, one active switch can further be removed from the voltage boost section of the circuits by simply rerouting the gating commands of the remaining switches without influencing the AC output voltage amplitude. To verify the validity of the proposed inverters, MATLAB/PLECS simulations were performed before a laboratory prototype was implemented for experimental testing.

Identificador

http://eprints.qut.edu.au/74168/

Publicador

Institute of Electrical and Electronics Engineers

Relação

DOI:10.1109/TPEL.2008.2011784

Gao, Feng, Loh, Poh Chiang, Teodorescu, Remus, Blaabjerg, Frede, & Vilathgamuwa, D. Mahinda (2009) Topological design and modulation strategy for buck-boost three-level inverters. IEEE Transactions on Power Electronics, 24(7), pp. 1722-1732.

Direitos

Copyright 2009 IEEE

Fonte

School of Electrical Engineering & Computer Science; Science & Engineering Faculty

Palavras-Chave #Buck–boost #Dc-link-cascaded inverter, #Neutral-point-clamped inverter #Three-level inverters
Tipo

Journal Article