Post assembly magnetization patterns in rare-earth permanent-magnet motors

D. G. Dorrell; M. F. Hsieh; Y. C. Hsu

doi:10.1109/TMAG.2007.893715

Post assembly magnetization patterns in rare-earth permanent-magnet motors

D. G. Dorrell, M. F. Hsieh, Y. C. Hsu

Department of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

This paper illustrates a method for verifying the full magnetization of a rare-earth permanent-magnet motor when it is magnetized using a post-assembly method. The usual method of manufacturing a rare-earth magnet machine is to premagnetize before assembly, however, the assembly can be cumbersome. It is possible to magnetize after assembly. This is a critical procedure. If the magnetizing current is too low, then incomplete magnetization occurs. If it is too high, then the winding will overheat and be damaged. A simple method can be used to ascertain the correct magnetization current and this is put forward here. The method is verified experimentally.

Original language	English
Pages (from-to)	2489-2491
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	43
Issue number	6
DOIs	https://doi.org/10.1109/TMAG.2007.893715
Publication status	Published - 2007

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2007.893715

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AB - This paper illustrates a method for verifying the full magnetization of a rare-earth permanent-magnet motor when it is magnetized using a post-assembly method. The usual method of manufacturing a rare-earth magnet machine is to premagnetize before assembly, however, the assembly can be cumbersome. It is possible to magnetize after assembly. This is a critical procedure. If the magnetizing current is too low, then incomplete magnetization occurs. If it is too high, then the winding will overheat and be damaged. A simple method can be used to ascertain the correct magnetization current and this is put forward here. The method is verified experimentally.

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Post assembly magnetization patterns in rare-earth permanent-magnet motors

Abstract

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