Thermal and Efficiency Analysis of Five-Level Multilevel-Clamped Multilevel Converter Considering Grid Codes

In this paper, a five-level multilevel-clamped multilevel converter (5L- MLC 2 ) topology is analyzed based on a typical grid integration application for renewable energy system. The loss and thermal distributions of the power devices in different switching legs are investigated and illustrated unde...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2014-01, Vol.50 (1), p.415-423
Main Authors: Ke Ma, Munoz-Aguilar, Raul Santiago, Rodriguez, Pedro, Blaabjerg, Frede
Format: Article
Language:English
Subjects:
Automatització i control de l'energia elèctrica
Clamps
Converters
Convertidors de corrent elèctric
DC-AC power conversion
Devices
Electric current converters
Electrònica de potència
Energia elèctrica
Energies
Energies renovables
Enginyeria electrònica
Insulated gate bipolar transistors
Inverters
Legged locomotion
Legs
Multilevel
multilevel converters
Power electronics
Reactive power
Recursos energètics renovables
Renewable energy
Switches
Switching
Topology
Àrees temàtiques de la UPC
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Summary:In this paper, a five-level multilevel-clamped multilevel converter (5L- MLC 2 ) topology is analyzed based on a typical grid integration application for renewable energy system. The loss and thermal distributions of the power devices in different switching legs are investigated and illustrated under rated condition. Afterward, a loss and efficiency evaluation method is proposed and applied which takes into account various injected reactive power ranges regulated by the grid codes. It is concluded that the loss and thermal distributions of the 5L- MLC 2 multilevel topology are unequal between the clamping switching legs and the main switching legs; it also shows a good and consistent efficiency characteristic under different output power ranges when complying with the grid codes.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2013.2266391