NDLI: Demagnetization conditions comparison for line-start permanent magnet synchronous motors

Content Provider	IEEE Xplore Digital Library
Author	Lu, Wei-fu Zhao, Hai-sen Liu, Shi
Copyright Year	2014
Description	Author affiliation: School of Electrical and Electronic Engineering, North China Electric Power University, China (Zhao, Hai-sen) \|\| School of Control Science and Engineering, North China Electric Power University, China (Lu, Wei-fu; Liu, Shi)
Abstract	To avoid the demagnetization risk, the largest demagnetization magnetic field is needed to be accurately predicted. Larger demagnetization field may occur under the starting process, or the abnormal operation conditions including out of step, three-phase short circuit, open-phase and reclosing of a line-start permanent magnet synchronous motor (LSPMSM). According to the partial demagnetization unconsidered by the traditional method, the time-stepping finite element method is adopted to take the irreversible demagnetization effect of each permanent magnet element into account under the demagnetization conditions. By the method, the irreversible demagnetization situations and the influencing factors, such as load factor and inertia moment factor, are analyzed. The more serious operation factors under every demagnetization condition are gained. Through the comparison of the performances after demagnetization under different conditions, the most serious demagnetization is occurred in the heavy-load starting process.
Starting Page	48
Ending Page	52
File Size	467896
Page Count	5
File Format	PDF
ISBN	9781479951628
DOI	10.1109/ICEMS.2014.7013449
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-10-22
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Demagnetization Permanent magnet motors Finite element analysis Torque Permanent magnets Circuit faults Coercive force
Content Type	Text
Resource Type	Article

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