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Suppression of electromagnetic interference using screening and shielding techniques within switching cells

Zhang, Zhe; Johnson, Christopher Mark

Authors

Zhe Zhang

MARK JOHNSON mark.johnson@nottingham.ac.uk
Professor of Advanced Power Conversion



Abstract

in this paper we introduce the use of combination of screening and shielding to suppress electromagnetic interference (EMI) generated by a switching cell. We investigate the screening of common mode (CM) currents and the shielding of magnetic fields generated by a model switching cell using a combination of simulation tools and measurements. Simulation results align with measurements very well up to 100MHz, confirming that a relatively simple model can be used to investigate different arrangements of screen layer. We demonstrate that electromagnetically coupled currents produced by rapidly changing voltages and currents in the main switching circuit can be circulated back to the local DC-link or absorbed rather than being coupled to the external environment.

Citation

Zhang, Z., & Johnson, C. M. (2017). Suppression of electromagnetic interference using screening and shielding techniques within switching cells

Conference Name 2017 IEEE International Workshop On Integrated Power Packaging (IWIPP)
End Date Apr 7, 2017
Acceptance Date Dec 16, 2016
Online Publication Date Jun 1, 2017
Publication Date Apr 5, 2017
Deposit Date Jan 23, 2018
Publicly Available Date Jan 23, 2018
Peer Reviewed Peer Reviewed
Keywords Wide Band Gap device; EMI; screening; shielding
Public URL http://eprints.nottingham.ac.uk/id/eprint/49283
Publisher URL http://ieeexplore.ieee.org/document/7936762/
Additional Information doi:10.1109/IWIPP.2017.7936762
ISBN: 9781509042784
© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

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