Efficiency optimized control of medium-size induction motor drives

F. Abrahamsen, Frede Blaabjerg, John Kim Pedersen, Paul B. Thøgersen

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

16 Citations (Scopus)

Abstract

The efficiency of a variable speed induction motor drive can be optimized by adaption of the motor flux level to the load torque. In small drives (<10 kW) this can be done without considering the relatively small converter losses, but for medium-size drives (10-1000 kW) the losses can not be disregarded without further analysis. The importance of the converter losses on efficiency optimization in medium-size drives is analyzed in this paper. Based on the experiments with a 90 kW drive it is found that it is not critical if the converter losses are neglected in the control, except that the robustness towards load disturbances may unnecessarily be reduced. Both displacement power factor and model-based efficiency optimizing control methods perform well in medium-size drives. The last strategy is also tested on a 22 kW drive with good results.
Original languageEnglish
Title of host publicationConference Record of the 2000 IEEE Industry Applications Conference, 2000
Number of pages7
PublisherIEEE Press
Publication date2000
Pages1489-1496
DOIs
Publication statusPublished - 2000
SeriesIndustry Applications Conference
ISSN0197-2618

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