Harmonics induced by triac-based soft starting of an induction motor in a residential air conditioner

S. El Ferik*, C. A. Belhadj, L. Benamor, A. S. Hussain

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

This work is focusing on the frequency analysis of a window type residential AC unit line current under timebased soft-starting control strategy. The control strategy assumes that only source voltage and current measurements are available. The soft-Starter is based on power electronic devises controlled through a firing signal generated by a programmed microcontroller during the first 500 ms. The frequency content shows the effect of the soft starter in exciting high frequency components of the line current. A Fast Fourier Transform as well as a body diagram analysis show that the high frequencies even or odd multiples of the fundamental line frequency are all excited by the soft-starter approach. Some these frequencies may harm the life cycle of the air-conditioner. The paper describes the experimental setup in details.

Original languageEnglish
Title of host publicationProceedings of the 25th IASTED International Conference on Modelling, Identification, and Control, MIC 2006
Pages137-142
Number of pages6
StatePublished - 2006

Publication series

NameProceedings of the IASTED International Conference on Modelling, Identification, and Control, MIC
ISSN (Print)1025-8973

Keywords

  • Air-conditioning
  • Harmonics
  • Soft-starter
  • Triac

ASJC Scopus subject areas

  • Software
  • Modeling and Simulation
  • Computer Science Applications

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