Effects of the switching frequency of a grid converter on the LCL filter design

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Abstract

The size of the LCL filter can be decreased significantly using higher switching frequencies enabled by next generation semiconductors. This paper studies the effects of the switching frequency of a grid converter on the LCL filter design. The goal in the design is to minimize the stored energy of the magnetic components. The core material of the converter-side inductor is selected based on the highest peak flux density within core-loss density limits. A laminated iron-core inductor is assumed on the grid side. For achieving higher accuracy during optimization, the grid-side inductor is modelled using an analytical high-frequency model. The proposed design method is evaluated using a 50-Hz 12.5-kVA SiC grid converter as an example case.
Original languageEnglish
Title of host publication8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016)
Place of PublicationGlasgow, UK
Number of pages6
ISBN (Electronic)978-1-78561-188-9
DOIs
Publication statusPublished - 19 Apr 2016
MoE publication typeA4 Article in a conference publication
EventIET International Conference on Power Electronics, Machines and Drives - Glasgow, United Kingdom
Duration: 19 Apr 201621 Apr 2016
Conference number: 8
http://conferences.theiet.org/pemd/about/index.cfm

Conference

ConferenceIET International Conference on Power Electronics, Machines and Drives
Abbreviated titlePEMD 2016
CountryUnited Kingdom
CityGlasgow
Period19/04/201621/04/2016
Internet address

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