Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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The Evaluation of Medium Voltage Motor's Current and Voltage Harmonics during Loading

  • Alboyaci, Bora (Dept. of Electrical Engineering, The University of Kocaeli) ;
  • Yorukeren, Nuran (Dept. of Electrical Engineering, The University of Kocaeli)
  • Published : 2007.03.01
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Abstract

This paper presents the results of investigating harmonic levels on medium voltage motors at loading conditions in air separation plant. The essential results of the measurements of the medium voltage motor harmonics are summarized in the values for the total harmonic distortion (THD). Motors loading case is used to assess the current and voltage harmonic distortions. Proper system analysis is important when adding a new motor starting and controlling the equipment. With the result of the paper it is possible to suggest the most appropriate starting and control method. Two medium voltage motors of air separation unit measurement results and simulations are summarized. Both current and voltage harmonic distortions are fitted by using a linear and exponential regression model. The prediction of THD values can be used for this kind of process for future planning by utilities.

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