Utilization of median filters in power electronics: Traction drive applications

Ali M. Bazzi, Philip T. Krein

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents three different applications of median filters in power electronic systems, specifically, in traction motor drives. While median filters are commonly used in signal processing, literature regarding their utilization in power electronics is very limited. The theory behind median filters is first introduced and then three example applications are discussed: speed estimation for an induction motor drive, current sensing in a three-phase inverter, and dc bus voltage sensing in a half-bridge inverter. Simulation and experimental results verify the simplicity and applicability of median filters for control and sensing in power electronics applications. Results show significant improvement in the filter output quality for all three applications compared to the filter input where numerical errors, data acquisition glitches, and noise are significantly reduced or eliminated in the output.

Original languageEnglish (US)
Title of host publication2013 28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013
Pages3055-3060
Number of pages6
DOIs
StatePublished - Jul 1 2013
Event28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013 - Long Beach, CA, United States
Duration: Mar 17 2013Mar 21 2013

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Other

Other28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013
CountryUnited States
CityLong Beach, CA
Period3/17/133/21/13

Keywords

  • Median filter
  • noise cancellation
  • power electronics control and sensing
  • speed estimation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Bazzi, A. M., & Krein, P. T. (2013). Utilization of median filters in power electronics: Traction drive applications. In 2013 28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013 (pp. 3055-3060). [6520735] (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC). https://doi.org/10.1109/APEC.2013.6520735