Thermal and efficiency analysis of five-level multi-level clamped multilevel converter considering grid codes

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Abstract

In this paper a five-level Multi-Clamped Multilevel Converter (5L-MLC2) topology is analyzed based on a typical grid integration application for renewable energy generation system. The loss and thermal distribution of the power devices in different switching legs are investigated and illustrated under rated operation. Afterwards, a loss and efficiency evaluation method is proposed and applied which takes into account various reactive power operation boundaries regulated by the grid codes. It is concluded that the 5L-MLC2 multilevel topology shows a good and consistent efficiency
characteristic under different output active powers when complying with the active/reactive power operation range regulated by e.g. the German grid codes.
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Details

In this paper a five-level Multi-Clamped Multilevel Converter (5L-MLC2) topology is analyzed based on a typical grid integration application for renewable energy generation system. The loss and thermal distribution of the power devices in different switching legs are investigated and illustrated under rated operation. Afterwards, a loss and efficiency evaluation method is proposed and applied which takes into account various reactive power operation boundaries regulated by the grid codes. It is concluded that the 5L-MLC2 multilevel topology shows a good and consistent efficiency
characteristic under different output active powers when complying with the active/reactive power operation range regulated by e.g. the German grid codes.
Original languageEnglish
Title of host publicationProceedings of the Fourth IEEE Energy Conversion Congress and Exposition, ECCE 2012
Number of pages8
PublisherIEEE Press
Publication date2012
Pages1774-1781
ISBN (Print)978-1-4673-0802-1
ISBN (Electronic)978-1-4673-0801-4
DOI
Publication statusPublished - 2012
Publication categoryResearch
Peer-reviewedYes
Eventthe Fourth IEEE Energy Conversion Congress and Exposition, ECCE 2012 - Raleigh Convention Center, Raleigh, United States
Duration: 15 Sep 201220 Sep 2012

Conference

Conferencethe Fourth IEEE Energy Conversion Congress and Exposition, ECCE 2012
LocationRaleigh Convention Center
LandUnited States
ByRaleigh
Periode15/09/201220/09/2012

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