Optimization of outer-rotor flux-switching permanent magnet motor using response surface method

Gao, Jingzhou (author), Liu, Aifeng (author), Yang, Jianwei (author), Zhao, Shengdun (author), Liu, Jiaji (author)

Flux switching permanent magnet (FSPM) motors, especially outer-rotor FSPM (OR-FSPM), have caught our attention due to their advantages such as robust structure, torque density, energy density, and fault tolerance. However, the double salient pole structure of OR-FSPM motor causes large torque fluctuation, which will lead to the motor running unstably, poor working accuracy, and difficulty achieving good motor control. Therefore, this paper presents an optimization process for an OR-FSPM as motor/generator in flywheel energy storage systems (FESS). First, an initial 12/10 OR-FSPM is investigated through the finite element method (FEM). Second, the influences of single variables such as stator slot width, rotor tooth width, and air-gap length on the torque performance are studied. Third, a multi-variable optimization is processed through the response surface method (RSM) combined with FEM. Finally, the optimized 12/10 OR-FSPM is verified through FEM. The results of the initial structure and the optimized structure show that the average torque of the optimized motor is increased by 3.7 %, and the torque ripple is reduced by 36.06 %. In addition, the back-electromagnetic force (back-EMF) amplitude of the optimized motor is sharply reduced from 283.1 V to 192.8 V.

• Language: English
• Keywords: outer-rotor flux switching permanent magnet motor, optimization, response surface method, finite element method, flywheel energy storage system
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Submitted for review: 13.11.2023
• Article acceptance date: 19.06.2024
• Publication date: 01.12.2024
• Year: 2024
• Number of pages: Str. 543-553
• Numbering: Vol. 70, no. 11/12
• PID: 20.500.12556/RUL-166710
• UDC: 621.313.13
• ISSN on article: 2536-3948
• DOI: 10.5545/sv-jme.2023.859
• COBISS.SI-ID: 223508995
• Publication date in RUL: 22.01.2025

Record is a part of a journal

• Title: Strojniški vestnik
• Shortened title: Stroj. vestn.
• Publisher: Fakulteta za strojništvo
• ISSN: 2536-3948
• COBISS.SI-ID: 294943232

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: motor s trajnimi magneti in zunanjim rotorjem, preklapljanje magnetnega pretoka, optimizacija, metoda odzivnih površin, metoda končnih elementov, sistem za shranjevanje energije z vztrajnikom