Topological design and modulation strategy for buck-boost three-level inverters
Gao, Feng, Teodorescu, Remus, Blaabjerg, Frede, Loh, Poh Chiang, & Vilathgamuwa, D. Mahinda (2007) Topological design and modulation strategy for buck-boost three-level inverters. In Batarseh, Issa (Ed.) Proceedings of the 2007 IEEE Power Electronics Specialists Conference, IEEE, Orlando, Florida, pp. 1578-1584.
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 "alternative phase opposition disposition" (APOD) 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 re-routing 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.
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|Item Type:||Conference Paper|
|Keywords:||Buck-boost, Dc-link-cascaded inverter, Neutral-point-clamped inverter, Three-level inverters|
|Divisions:||Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2007 IEEE|
|Deposited On:||21 Jul 2014 22:09|
|Last Modified:||22 Jul 2014 22:13|
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