A Post-Assembly Magnetization Method for a Line-Start Permanent-Magnet Motor

Weinong Fu, Yiduan Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

13 Citations (Scopus)


A surface-mounted permanent-magnet (PM) synchronous motor with a novel structure is presented. It has the merits of line-start, and its PMs can be magnetized postassembly. It has additional copper bars at the two sides of PMs to serve as the rotor cage of an induction motor to allow it to produce self-starting torque. After the motor is assembled with the PMs before magnetization, the copper bars are then used ingeniously as the excitation coils to magnetize the PMs. No special magnetizing fixtures are therefore needed. A time-stepping finite-element method, which can simulate the dynamic magnetizing process, is used to compare the performance of different designs and determine also the parameters of the magnetizing circuit. The performance of the proposed motor is verified by numerical computation.
Original languageEnglish
Article number7422043
JournalIEEE Transactions on Applied Superconductivity
Issue number4
Publication statusPublished - 1 Jun 2016


  • Finite-element method
  • magnetic field
  • magnetization
  • motor
  • permanent magnet
  • post-assembly

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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