Electromagnetic Analysis and Multi-Objective Design Optimization of a WFSM with Hybrid GOES-NOES Core
This study presents a design and optimization methodology to enhance the power density and efficiency of wound field synchronous machines (WFSMs) by selectively applying grain-oriented electrical steel (GOES). Unlike conventional non-grain-oriented electrical steel (NOES), GOES exhibits significantl...
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| Format: | Article |
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MDPI AG
2025-07-01
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| Series: | World Electric Vehicle Journal |
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| Online Access: | https://www.mdpi.com/2032-6653/16/7/399 |
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| author | Kyeong-Tae Yu Hwi-Rang Ban Seong-Won Kim Jun-Beom Park Jang-Young Choi Kyung-Hun Shin |
| author_facet | Kyeong-Tae Yu Hwi-Rang Ban Seong-Won Kim Jun-Beom Park Jang-Young Choi Kyung-Hun Shin |
| author_sort | Kyeong-Tae Yu |
| collection | DOAJ |
| description | This study presents a design and optimization methodology to enhance the power density and efficiency of wound field synchronous machines (WFSMs) by selectively applying grain-oriented electrical steel (GOES). Unlike conventional non-grain-oriented electrical steel (NOES), GOES exhibits significantly lower core loss along its rolling direction, making it suitable for regions with predominantly alternating magnetic fields. Based on magnetic field analysis, four machine configurations were investigated, differing in the placement of GOES within stator and rotor teeth. Finite element analysis (FEA) was employed to compare electromagnetic performance across the configurations. Subsequently, a multi-objective optimization was conducted using Latin Hypercube Sampling, meta-modeling, and a genetic algorithm to maximize power density and efficiency while minimizing torque ripple. The optimized WFSM achieved a 13.97% increase in power density and a 1.0% improvement in efficiency compared to the baseline NOES model. These results demonstrate the feasibility of applying GOES in rotating machines to reduce core loss and improve overall performance, offering a viable alternative to rare-earth permanent magnet machines in xEV applications. |
| format | Article |
| id | doaj-art-8e62034d3f904712a9a5b2d425b8e1cc |
| institution | DOAJ |
| issn | 2032-6653 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | World Electric Vehicle Journal |
| spelling | doaj-art-8e62034d3f904712a9a5b2d425b8e1cc2025-08-20T03:13:58ZengMDPI AGWorld Electric Vehicle Journal2032-66532025-07-0116739910.3390/wevj16070399Electromagnetic Analysis and Multi-Objective Design Optimization of a WFSM with Hybrid GOES-NOES CoreKyeong-Tae Yu0Hwi-Rang Ban1Seong-Won Kim2Jun-Beom Park3Jang-Young Choi4Kyung-Hun Shin5Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of KoreaDepartment of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of KoreaDepartment of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of KoreaDepartment of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of KoreaDepartment of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of KoreaDepartment of Electrical Engineering, Changwon National University, Changwon 51140, Republic of KoreaThis study presents a design and optimization methodology to enhance the power density and efficiency of wound field synchronous machines (WFSMs) by selectively applying grain-oriented electrical steel (GOES). Unlike conventional non-grain-oriented electrical steel (NOES), GOES exhibits significantly lower core loss along its rolling direction, making it suitable for regions with predominantly alternating magnetic fields. Based on magnetic field analysis, four machine configurations were investigated, differing in the placement of GOES within stator and rotor teeth. Finite element analysis (FEA) was employed to compare electromagnetic performance across the configurations. Subsequently, a multi-objective optimization was conducted using Latin Hypercube Sampling, meta-modeling, and a genetic algorithm to maximize power density and efficiency while minimizing torque ripple. The optimized WFSM achieved a 13.97% increase in power density and a 1.0% improvement in efficiency compared to the baseline NOES model. These results demonstrate the feasibility of applying GOES in rotating machines to reduce core loss and improve overall performance, offering a viable alternative to rare-earth permanent magnet machines in xEV applications.https://www.mdpi.com/2032-6653/16/7/399wound field synchronous machinegrain-oriented electrical steeloptimization |
| spellingShingle | Kyeong-Tae Yu Hwi-Rang Ban Seong-Won Kim Jun-Beom Park Jang-Young Choi Kyung-Hun Shin Electromagnetic Analysis and Multi-Objective Design Optimization of a WFSM with Hybrid GOES-NOES Core World Electric Vehicle Journal wound field synchronous machine grain-oriented electrical steel optimization |
| title | Electromagnetic Analysis and Multi-Objective Design Optimization of a WFSM with Hybrid GOES-NOES Core |
| title_full | Electromagnetic Analysis and Multi-Objective Design Optimization of a WFSM with Hybrid GOES-NOES Core |
| title_fullStr | Electromagnetic Analysis and Multi-Objective Design Optimization of a WFSM with Hybrid GOES-NOES Core |
| title_full_unstemmed | Electromagnetic Analysis and Multi-Objective Design Optimization of a WFSM with Hybrid GOES-NOES Core |
| title_short | Electromagnetic Analysis and Multi-Objective Design Optimization of a WFSM with Hybrid GOES-NOES Core |
| title_sort | electromagnetic analysis and multi objective design optimization of a wfsm with hybrid goes noes core |
| topic | wound field synchronous machine grain-oriented electrical steel optimization |
| url | https://www.mdpi.com/2032-6653/16/7/399 |
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