Condition monitoring of DC link electrolytic capacitors in adjustable speed drives

Myungchul Kim, Kwangwoon Lee, Jangho Yoon, Sang Bin Lee, Ji Yoon Yoo

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

6 Citations (Scopus)

Abstract

A new sensorless technique for monitoring the condition of inverter dc link aluminum electrolytic capacitors based on equivalent series resistance, ESR, and capacitance, C, estimation is proposed in this paper. The main concept of the proposed method is to estimate ESR and C of the capacitor using the inverter whenever the motor is stopped. The parameters are estimated from the dc link voltage and stator current measurements available in the inverter with the switched dc link voltage applied to the motor stator winding. The temperature of the capacitor can also be estimated under thermal equilibrium based on the stator resistance estimate to take the influence of temperature variation into account. An experimental study on a 250W permanent magnet synchronous motor performed under accelerated capacitor degradation is presented to verify the proposed technique. It is shown that the proposed method provides a reliable and sensitive indication of capacitor aging without additional hardware requirements.

Original languageEnglish
Title of host publicationConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
Pages237-243
Number of pages7
Publication statusPublished - 2007 Dec 1
Event2007 IEEE Industry Applications Conference 42nd Annual Meeting, IAS - New Orleans, LA, United States
Duration: 2007 Sep 232007 Sep 27

Other

Other2007 IEEE Industry Applications Conference 42nd Annual Meeting, IAS
CountryUnited States
CityNew Orleans, LA
Period07/9/2307/9/27

Fingerprint

Electrolytic capacitors
Condition monitoring
Capacitors
Stators
Paramagnetic resonance
Electric potential
Electric current measurement
Synchronous motors
Permanent magnets
Capacitance
Aging of materials
Aluminum
Hardware
Degradation
Temperature
Monitoring

Keywords

  • Adjustable speed drive
  • Aluminum electrolytic capcitor
  • Capacitane
  • Condition monitoring
  • Dc link capacitor
  • Diagnostics
  • Electrolyte
  • Equivalent Series Resistance (ESR)
  • Stator resistance estimation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Kim, M., Lee, K., Yoon, J., Lee, S. B., & Yoo, J. Y. (2007). Condition monitoring of DC link electrolytic capacitors in adjustable speed drives. In Conference Record - IAS Annual Meeting (IEEE Industry Applications Society) (pp. 237-243). [4347792]

Condition monitoring of DC link electrolytic capacitors in adjustable speed drives. / Kim, Myungchul; Lee, Kwangwoon; Yoon, Jangho; Lee, Sang Bin; Yoo, Ji Yoon.

Conference Record - IAS Annual Meeting (IEEE Industry Applications Society). 2007. p. 237-243 4347792.

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

Kim, M, Lee, K, Yoon, J, Lee, SB & Yoo, JY 2007, Condition monitoring of DC link electrolytic capacitors in adjustable speed drives. in Conference Record - IAS Annual Meeting (IEEE Industry Applications Society)., 4347792, pp. 237-243, 2007 IEEE Industry Applications Conference 42nd Annual Meeting, IAS, New Orleans, LA, United States, 07/9/23.
Kim M, Lee K, Yoon J, Lee SB, Yoo JY. Condition monitoring of DC link electrolytic capacitors in adjustable speed drives. In Conference Record - IAS Annual Meeting (IEEE Industry Applications Society). 2007. p. 237-243. 4347792
Kim, Myungchul ; Lee, Kwangwoon ; Yoon, Jangho ; Lee, Sang Bin ; Yoo, Ji Yoon. / Condition monitoring of DC link electrolytic capacitors in adjustable speed drives. Conference Record - IAS Annual Meeting (IEEE Industry Applications Society). 2007. pp. 237-243
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