Novel Design Optimization Strategy using a Lumped Magnetic-Circuit Model for Surface Permenet Magnet Machine with Step-skewing Rotor

Jin Seok Kim, Rae Eun Kim, Jae Woo Kang, Jangho Seo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, a novel approximation strategy to three-dimensional(3-D) optimization design is proposed for surface permanent-magnet machines (SPMSM) with rotor overhang and step-skewing type motor using lumped magnetic circuit model. The rotor overhang method is applied to consider the tolerance of electric steel length in axial-direction and maintain the machine performances. The rotor step-skewing technique is used to reduce cogging torque, torque ripple value and THD of back-electro motive force (EMF). In general, the 3-D finite element method (FEM) analysis is requisite to analyze the performance of overhang and step-skewing SPM motor considering the additional flux on the overhang side and the leakage flux crossing section on the rotor magnet side. Moreover, to optimize the SPM topology for target performance, 3-D effect which are number of skew steps, shape of magnet and length of rotor, need to be considered. However, 3-D FEM optimization process requires abundant computation time and computing memory. To deal with this problem, main design variables is considered using lumped magnetic-circuit model. In addition, effective of this method is validated through comparison of 2-D, 3D and test results.

Original languageEnglish
Title of host publicationCEFC 2024 - 21st IEEE Biennial Conference on Electromagnetic Field Computation
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350348958
DOIs
StatePublished - 2024
Event21st IEEE Biennial Conference on Electromagnetic Field Computation, CEFC 2024 - Jeju, Korea, Republic of
Duration: 2 Jun 20245 Jun 2024

Publication series

NameCEFC 2024 - 21st IEEE Biennial Conference on Electromagnetic Field Computation

Conference

Conference21st IEEE Biennial Conference on Electromagnetic Field Computation, CEFC 2024
Country/TerritoryKorea, Republic of
CityJeju
Period2/06/245/06/24

Keywords

  • finite element method
  • overhang
  • step-skew
  • surface permanent magnet machines

Fingerprint

Dive into the research topics of 'Novel Design Optimization Strategy using a Lumped Magnetic-Circuit Model for Surface Permenet Magnet Machine with Step-skewing Rotor'. Together they form a unique fingerprint.

Cite this