Analysis and Optimization of Axial Flux Permanent Magnet Machine for Cogging Torque Reduction
In this paper, a hexagonal magnet shape is proposed to have an arc profile capable of reducing torque ripples resulting from cogging torque in a single-sided axial flux permanent magnet (AFPM) machine. The arc-shaped permanent magnet increases the air-gap length effectively and makes the flux of the...
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MDPI AG
2021-07-01
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| Series: | Mathematics |
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| Online Access: | https://www.mdpi.com/2227-7390/9/15/1738 |
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| author | Hina Usman Junaid Ikram Khurram Saleem Alimgeer Muhammad Yousuf Syed Sabir Hussain Bukhari Jong-Suk Ro |
| author_facet | Hina Usman Junaid Ikram Khurram Saleem Alimgeer Muhammad Yousuf Syed Sabir Hussain Bukhari Jong-Suk Ro |
| author_sort | Hina Usman |
| collection | DOAJ |
| description | In this paper, a hexagonal magnet shape is proposed to have an arc profile capable of reducing torque ripples resulting from cogging torque in a single-sided axial flux permanent magnet (AFPM) machine. The arc-shaped permanent magnet increases the air-gap length effectively and makes the flux of the air-gap more sinusoidal, which decreases air-gap flux density and hence causes a reduction in cogging torque. Cogging torque is the basic source of vibration, along with the noise in PM machines, since it is the main cause of torque ripples. Cogging torque is independent of the load current and is proportional to the air-gap flux and the reluctance variation. Three-dimensional finite element analysis (FEA) is used in the JMAG-Designer to analyze the performance of the conventional and proposed hexagonal-shaped PM AFPM machines. The proposed shape is designed to reduce cogging torque, and the voltage remains the same as compared to the conventional hexagonal-shaped PM machine. Further, optimization is performed by utilizing an asymmetric overhang. Latin hypercube sampling (LHS) is used to create samples, the kriging method is applied to approximate the model, and a genetic algorithm is applied to obtain the optimum parameters of the machine. |
| first_indexed | 2024-03-10T09:12:23Z |
| format | Article |
| id | doaj.art-b9d62498b7df484caecad42161d0792f |
| institution | Directory Open Access Journal |
| issn | 2227-7390 |
| language | English |
| last_indexed | 2024-03-10T09:12:23Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Mathematics |
| spelling | doaj.art-b9d62498b7df484caecad42161d0792f2023-11-22T05:55:56ZengMDPI AGMathematics2227-73902021-07-01915173810.3390/math9151738Analysis and Optimization of Axial Flux Permanent Magnet Machine for Cogging Torque ReductionHina Usman0Junaid Ikram1Khurram Saleem Alimgeer2Muhammad Yousuf3Syed Sabir Hussain Bukhari4Jong-Suk Ro5Electrical and Computer Engineering Department, Islamabad Campus, COMSATS University Islamabad, Islamabad 45550, PakistanElectrical and Computer Engineering Department, Islamabad Campus, COMSATS University Islamabad, Islamabad 45550, PakistanElectrical and Computer Engineering Department, Islamabad Campus, COMSATS University Islamabad, Islamabad 45550, PakistanElectrical and Computer Engineering Department, Abbottabad Campus, COMSATS University Islamabad, Islamabad 22060, PakistanDepartment of Electrical Engineering, Sukkur IBA University, Sukkur 65200, PakistanSchool of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06910, KoreaIn this paper, a hexagonal magnet shape is proposed to have an arc profile capable of reducing torque ripples resulting from cogging torque in a single-sided axial flux permanent magnet (AFPM) machine. The arc-shaped permanent magnet increases the air-gap length effectively and makes the flux of the air-gap more sinusoidal, which decreases air-gap flux density and hence causes a reduction in cogging torque. Cogging torque is the basic source of vibration, along with the noise in PM machines, since it is the main cause of torque ripples. Cogging torque is independent of the load current and is proportional to the air-gap flux and the reluctance variation. Three-dimensional finite element analysis (FEA) is used in the JMAG-Designer to analyze the performance of the conventional and proposed hexagonal-shaped PM AFPM machines. The proposed shape is designed to reduce cogging torque, and the voltage remains the same as compared to the conventional hexagonal-shaped PM machine. Further, optimization is performed by utilizing an asymmetric overhang. Latin hypercube sampling (LHS) is used to create samples, the kriging method is applied to approximate the model, and a genetic algorithm is applied to obtain the optimum parameters of the machine.https://www.mdpi.com/2227-7390/9/15/1738Axial flux permanent magnet machine3D FEAGenetic algorithmhexagonal-shaped PMsPM overhang |
| spellingShingle | Hina Usman Junaid Ikram Khurram Saleem Alimgeer Muhammad Yousuf Syed Sabir Hussain Bukhari Jong-Suk Ro Analysis and Optimization of Axial Flux Permanent Magnet Machine for Cogging Torque Reduction Mathematics Axial flux permanent magnet machine 3D FEA Genetic algorithm hexagonal-shaped PMs PM overhang |
| title | Analysis and Optimization of Axial Flux Permanent Magnet Machine for Cogging Torque Reduction |
| title_full | Analysis and Optimization of Axial Flux Permanent Magnet Machine for Cogging Torque Reduction |
| title_fullStr | Analysis and Optimization of Axial Flux Permanent Magnet Machine for Cogging Torque Reduction |
| title_full_unstemmed | Analysis and Optimization of Axial Flux Permanent Magnet Machine for Cogging Torque Reduction |
| title_short | Analysis and Optimization of Axial Flux Permanent Magnet Machine for Cogging Torque Reduction |
| title_sort | analysis and optimization of axial flux permanent magnet machine for cogging torque reduction |
| topic | Axial flux permanent magnet machine 3D FEA Genetic algorithm hexagonal-shaped PMs PM overhang |
| url | https://www.mdpi.com/2227-7390/9/15/1738 |
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