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

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

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)


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 languageEnglish
Pages (from-to)2489-2491
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number6
Publication statusPublished - 2007

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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