Comparative analysis of the selective resonant LCL and LCL plus trap filters

Remus Narcis Beres, Xiongfei Wang, Frede Blaabjerg, Claus Leth Bak, Marco Liserre

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

5 Citations (Scopus)

Abstract

In this paper two promising LCL based filter topologies are evaluated against the well-known LCL with a damping resistor. The filters are designed for high power applications where the frequency modulation index is relatively low. The first topology is the selective resonant LCL filter which aim is to minimize the damping losses by bypassing the resistor at the fundamental and switching frequencies while preserving high attenuation at higher frequencies. A new design procedure is proposed for the selective resonant LCL filter. The presence of multi-tuned traps in the second topology aims to decrease the total size of the filter reactive elements while meeting current harmonic standards. It is found that selective resonant LCL filter provide much lower damping losses compared to the LCL filter with simple resistor topology. Additionally, for the trap topology a minimum switching frequency is determined which ensure that reduction in size of the filter is possible. The theoretical analysis is demonstrated by frequency analysis and time domain simulations.
Original languageEnglish
Title of host publicationProceedings of the 14th International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2014
Number of pages8
PublisherIEEE Press
Publication date2014
Pages740 - 747
Article number6850949
ISBN (Print)978-1-4799-5183-3
DOIs
Publication statusPublished - 2014
Event14th International Conference on Optimization of Electrical and Electronic Equipment - Brasov, Romania
Duration: 22 May 201424 May 2014

Conference

Conference14th International Conference on Optimization of Electrical and Electronic Equipment
CountryRomania
CityBrasov
Period22/05/201424/05/2014
SeriesOptimization of Electrical and Electronic Equipment (OPTIM), Proceedings
ISSN1842-0133

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