Post-assembly magnetization of rare-earth fractional-slot surface permanent-magnet machines using a two-shot method

Min Fu Hsieh, Yao Min Lien, David G. Dorrell

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

This paper studies the post-assembly magnetization of a fractional-slot, concentrated winding brushless rare-earth surface permanent-magnet machine with six rotor poles and nine stator slots. In the paper, the simulation method is discussed, and it is illustrated that it is possible to fully magnetize the machine after assembly using two pulses of the winding (two-shot method) with a rotation of the rotor between pulses. The MMF required for this process is predicted. The method is then validated experimentally using a test motor and a magnetizer. The machine can be magnetized using connection of either two phases or three phases, and both scenarios are investigated. The open-circuit back electromotive forces are obtained to illustrate the partial magnetization after one pulse and full magnetization after two pulses. Load measurements are also carried out. With the increasing use and size of rare-earth magnet machines, the magnetizing procedure is an important aspect of their manufacture; premagnetized assembly can be difficult.

Original languageEnglish
Article number6032089
Pages (from-to)2478-2486
Number of pages9
JournalIEEE Transactions on Industry Applications
Volume47
Issue number6
DOIs
Publication statusPublished - 2011 Nov 1

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Post-assembly magnetization of rare-earth fractional-slot surface permanent-magnet machines using a two-shot method'. Together they form a unique fingerprint.

Cite this