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Open AccessFeature PaperArticle

EMI Filter Design for a Single-stage Bidirectional and Isolated AC–DC Matrix Converter

1
Faculty of Engineering, University of Porto, Rua Doutor Roberto Frias, 4200-465 Porto, Portugal
2
INESC TEC—Institute for Systems and Computer Engineering, Technology and Science; Rua Doutor Roberto Frias, 4200-465 Porto, Portugal
*
Author to whom correspondence should be addressed.
Electronics 2018, 7(11), 318; https://doi.org/10.3390/electronics7110318
Received: 17 September 2018 / Revised: 24 October 2018 / Accepted: 9 November 2018 / Published: 12 November 2018
(This article belongs to the Special Issue Applications of Power Electronics)
This paper describes the design of an electromagnetic interference (EMI) filter for the high-frequency link matrix converter (HFLMC). The proposed method aims to systematize the design process for pre-compliance with CISPR 11 Class B standard in the frequency range 150 kHz to 30 MHz. This approach can be extended to other current source converters which allows time-savings during the project of the filter. Conducted emissions are estimated through extended simulation and take into account the effect of the measurement apparatus. Differential-mode (DM) and common-mode (CM) filtering stages are projected separately and then integrated in a synergistic way in a single PCB to reduce volume and weight. A prototype of the filter was constructed and tested in the laboratory. Experimental results with the characterization of the insertion losses following the CISPR 17 standard are provided. The attenuation capability of the filter was demonstrated in the final part of the paper. View Full-Text
Keywords: EMI filter; electromagnetic compatibility; AC–DC power converters; electromagnetic interference filter; matrix converters; current source; power density; battery energy storage systems; battery chargers EMI filter; electromagnetic compatibility; AC–DC power converters; electromagnetic interference filter; matrix converters; current source; power density; battery energy storage systems; battery chargers
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Varajão, D.; Esteves Araújo, R.; Miranda, L.M.; Peças Lopes, J.A. EMI Filter Design for a Single-stage Bidirectional and Isolated AC–DC Matrix Converter. Electronics 2018, 7, 318.

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