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Conducted EMI modeling and mitigation for power converters and motor drives

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1 Author(s)
Jian Sun ; Department of Electrical, Computer, and Systems Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA

The increasing use of power electronics in aircraft power systems to enable new, more-electric aircraft (MEA) functions has also led to increasing EMI emission. EMI filters may account for more than 50% of the overall volume and weight of high-power converters such as variable-speed motor drives. The traditional approach to mitigating EMI requires functional prototypes and EMI measurements before filter design can start. Such an empirical, EMI-last approach results in designs that are suboptimal at best and is a major cause for schedule delay and disruption. This paper reviews recent research on EMI modeling and system solutions to EMI, emphasizing conducted emission of three-phase converters and variable-speed drives that dominate system EMI filtering requirements. The goal is to enable a concurrent-EMI design approach and to develop optimal system solutions that minimize the overall volume and size.

Published in:

Aerospace EMC, 2012 Proceedings ESA Workshop on

Date of Conference:

21-23 May 2012