Establishing the Relative Merits of Interior and Spoke-Type Permanent-Magnet Machines With Ferrite or NdFeB Through Systematic Design Optimization

Peng Zhang, Gennadi Y. Sizov, Dan M. Ionel, Nabeel A.O. Demerdash

Research output: Contribution to journalArticlepeer-review

61 Scopus citations

Abstract

In this paper, a multiobjective design optimization method combining design-of-experiments techniques and differential-evolution algorithms is presented. The method was implemented and utilized in order to provide practical engineering insights for the optimal design of interior and spoke-type permanent-magnet machines. Two combinations with 12 slots and 8 poles and 12 slots and 10 poles, respectively, have been studied in conjunction with rare-earth neodymium-iron-boron (NdFeB) and ferrites. As part of the optimization process, a computationally efficient finite-element electromagnetic analysis was employed for estimating the performance of thousands of candidate designs. Three optimization objectives were concurrently considered for minimum total material cost, power losses, and torque ripple, respectively. Independent variables were considered for both the stator and rotor geometries. A discussion based on a systematic comparison is included, showing, among other things and despite common misconception, that comparable cost versus loss Paretos can be achieved with any of the rotor topologies studied.

Original languageEnglish
Article number07017567
Pages (from-to)2940-2948
Number of pages9
JournalIEEE Transactions on Industry Applications
Volume51
Issue number4
DOIs
StatePublished - Jul 1 2015

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

Keywords

  • design of experiments
  • design optimization
  • differential evolution
  • finite element analysis
  • interior permanent magnet machine
  • rare earth magnet
  • response surface methodology
  • spoke-type rotor

ASJC Scopus subject areas

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

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