Design of a non‐ferromagnetic spoke array Vernier permanent magnet generator with iron‐bar based on enhanced equivalent magnetic network model
Abstract The spoke‐type arrangement of permanent magnets (PMs) in rotor of Vernier PM (VPM) machines was first introduced in a dual‐stator topology to overcome low‐power drawback of VPM machines. However, this structure is mostly applicable for high‐power motor drives. A non‐ferromagnetic spoke arra...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-03-01
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| Series: | IET Electric Power Applications |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/elp2.12272 |
| _version_ | 1827975616831422464 |
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| author | Mehrage Ghods Jawad Faiz Ehsan Rashipour Mohammad Amin Bazrafshan Mohammad Reza Besmi |
| author_facet | Mehrage Ghods Jawad Faiz Ehsan Rashipour Mohammad Amin Bazrafshan Mohammad Reza Besmi |
| author_sort | Mehrage Ghods |
| collection | DOAJ |
| description | Abstract The spoke‐type arrangement of permanent magnets (PMs) in rotor of Vernier PM (VPM) machines was first introduced in a dual‐stator topology to overcome low‐power drawback of VPM machines. However, this structure is mostly applicable for high‐power motor drives. A non‐ferromagnetic spoke array VPM generator with a special rotor structure for small‐scale wind turbine generator is presented. The leakage flux lines tend to be aligned with the main flux routes due to a special design of flux barriers in end portion of PM housings. High torque‐density, low weight, torque‐speed curve with a wide constant torque region, promising efficiency, and power factor are the advantages of the proposed machine. An Equivalent‐Magnetic‐Network (EMN) model is established for predicting the complex behaviour of flux lines and operating quantities of the proposed structure with reasonable accuracy. The contribution of the modelling method includes a special mesh cell for the air‐gap permeance network to more accurately capture the flux routes, continuous positioning method for omitting spikes on post‐processing waveforms due to numerical errors, and a stable solving flowchart with a high convergence rate. The validity of the EMN model is validated by comparing the operating waveforms of the machine with the corresponding waveforms obtained by the finite element and experiments. The cover image is based on the Research Article Design of a non‐ferromagnetic spoke array Vernier permanent magnet generator with iron‐bar based on enhanced equivalent magnetic network model by Mehrage Ghods et al., https://doi.org/10.1049/elp2.12272. |
| first_indexed | 2024-04-09T20:14:34Z |
| format | Article |
| id | doaj.art-a9030cf0a3d5451592ec8613bae03f8c |
| institution | Directory Open Access Journal |
| issn | 1751-8660 1751-8679 |
| language | English |
| last_indexed | 2024-04-09T20:14:34Z |
| publishDate | 2023-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Electric Power Applications |
| spelling | doaj.art-a9030cf0a3d5451592ec8613bae03f8c2023-03-31T10:56:15ZengWileyIET Electric Power Applications1751-86601751-86792023-03-0117339240810.1049/elp2.12272Design of a non‐ferromagnetic spoke array Vernier permanent magnet generator with iron‐bar based on enhanced equivalent magnetic network modelMehrage Ghods0Jawad Faiz1Ehsan Rashipour2Mohammad Amin Bazrafshan3Mohammad Reza Besmi4School of Electrical and Computer Engineering College of Engineering University of Tehran Tehran IranSchool of Electrical and Computer Engineering College of Engineering University of Tehran Tehran IranDepartment of Electrical Engineering Faulty of Engineering University of Shahed Tehran IranSchool of Electrical and Computer Engineering College of Engineering University of Tehran Tehran IranDepartment of Electrical Engineering Faulty of Engineering University of Shahed Tehran IranAbstract The spoke‐type arrangement of permanent magnets (PMs) in rotor of Vernier PM (VPM) machines was first introduced in a dual‐stator topology to overcome low‐power drawback of VPM machines. However, this structure is mostly applicable for high‐power motor drives. A non‐ferromagnetic spoke array VPM generator with a special rotor structure for small‐scale wind turbine generator is presented. The leakage flux lines tend to be aligned with the main flux routes due to a special design of flux barriers in end portion of PM housings. High torque‐density, low weight, torque‐speed curve with a wide constant torque region, promising efficiency, and power factor are the advantages of the proposed machine. An Equivalent‐Magnetic‐Network (EMN) model is established for predicting the complex behaviour of flux lines and operating quantities of the proposed structure with reasonable accuracy. The contribution of the modelling method includes a special mesh cell for the air‐gap permeance network to more accurately capture the flux routes, continuous positioning method for omitting spikes on post‐processing waveforms due to numerical errors, and a stable solving flowchart with a high convergence rate. The validity of the EMN model is validated by comparing the operating waveforms of the machine with the corresponding waveforms obtained by the finite element and experiments. The cover image is based on the Research Article Design of a non‐ferromagnetic spoke array Vernier permanent magnet generator with iron‐bar based on enhanced equivalent magnetic network model by Mehrage Ghods et al., https://doi.org/10.1049/elp2.12272.https://doi.org/10.1049/elp2.12272equivalent circuitsfinite volume methodsmodulationpermanent magnet generators |
| spellingShingle | Mehrage Ghods Jawad Faiz Ehsan Rashipour Mohammad Amin Bazrafshan Mohammad Reza Besmi Design of a non‐ferromagnetic spoke array Vernier permanent magnet generator with iron‐bar based on enhanced equivalent magnetic network model IET Electric Power Applications equivalent circuits finite volume methods modulation permanent magnet generators |
| title | Design of a non‐ferromagnetic spoke array Vernier permanent magnet generator with iron‐bar based on enhanced equivalent magnetic network model |
| title_full | Design of a non‐ferromagnetic spoke array Vernier permanent magnet generator with iron‐bar based on enhanced equivalent magnetic network model |
| title_fullStr | Design of a non‐ferromagnetic spoke array Vernier permanent magnet generator with iron‐bar based on enhanced equivalent magnetic network model |
| title_full_unstemmed | Design of a non‐ferromagnetic spoke array Vernier permanent magnet generator with iron‐bar based on enhanced equivalent magnetic network model |
| title_short | Design of a non‐ferromagnetic spoke array Vernier permanent magnet generator with iron‐bar based on enhanced equivalent magnetic network model |
| title_sort | design of a non ferromagnetic spoke array vernier permanent magnet generator with iron bar based on enhanced equivalent magnetic network model |
| topic | equivalent circuits finite volume methods modulation permanent magnet generators |
| url | https://doi.org/10.1049/elp2.12272 |
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