Rotor Optimization and Electromagnetic Performance Comparison of the 10- and 14-pole Wound-Field Flux Switching Machines

Udochukwu Bola Akuru, Lesedi Masisi, Mbika Muteba

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

Abstract

This paper comparatively analyzes the electromagnetic performance of optimized 12/10 and 12/14 wound-field flux switching machines (WFFSMs). Finite element analysis (FEA) integrated with a genetic algorithm (GA) is used to op-timize the rotor geometry and minimize torque ripple. The 12/14 WFFSM demonstrates significant improvements over the 12/10 WFFSM in terms of 27.5% lower torque ripple and 15.7% higher average torque attributed to its higher rotor pole number. However, the 12/14 WFFSM experiences higher core losses and a lower power factor due to increased core saturation from the shorter rotor pitch. Further analysis shows the 12/14 WFFSM achieves slightly higher efficiency (+0.4%) owing to increased output power despite higher core losses. Additional skewing is shown to further reduce torque ripple in the 12/14 WFFSM by 66% while maintaining torque capability. In conclusion, the 12/14 WFFSM with an optimized rotor outperforms the 12/10 WFFSM electromagnetically but careful consideration of the trade-offs is necessary when selecting the rotor pole number for targeted applications. This study provides useful insights into designing higher performance non-PM WFFSMs.

Original languageEnglish
Title of host publication2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4370-4374
Number of pages5
ISBN (Electronic)9798350316445
DOIs
Publication statusPublished - 2023
Externally publishedYes
Event2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023 - Nashville, United States
Duration: 29 Oct 20232 Nov 2023

Publication series

Name2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023

Conference

Conference2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023
Country/TerritoryUnited States
CityNashville
Period29/10/232/11/23

Keywords

  • Electromagnetic performance
  • finite element analysis (FEA)
  • genetic algorithm (GA)
  • optimization
  • rotor
  • wound-field flux switching machine (WFFSM)

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering

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