Nonlinear Varying-Network Magnetic Circuit Analysis of Consequent-Pole Permanent-Magnet Motor for Electric Vehicles
To conserve rare earth resources, consequent-pole permanent-magnet (CPPM) machine has been studied, which employs iron-pole to replace half PM poles. Meanwhile, to increase flux-weakening ability, hybrid excitation CPPM machine with three-dimensional (3-D) flux flow has been proposed. Considering fi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | World Electric Vehicle Journal |
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| Online Access: | https://www.mdpi.com/2032-6653/12/4/254 |
| _version_ | 1797499755573542912 |
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| author | Hui Wang Kwok Tong Chau Christopher H. T. Lee C. C. Chan Tengbo Yang |
| author_facet | Hui Wang Kwok Tong Chau Christopher H. T. Lee C. C. Chan Tengbo Yang |
| author_sort | Hui Wang |
| collection | DOAJ |
| description | To conserve rare earth resources, consequent-pole permanent-magnet (CPPM) machine has been studied, which employs iron-pole to replace half PM poles. Meanwhile, to increase flux-weakening ability, hybrid excitation CPPM machine with three-dimensional (3-D) flux flow has been proposed. Considering finite element method (FEM) is time-consuming, for the analysis of the CPPM machine, this paper presents a nonlinear varying-network magnetic circuit (NVNMC), which can analytically calculate the corresponding electromagnetic performances. The key is to separate the model of CPPM machine into different elements reasonably; thus, the reluctances and magnetomotive force (MMF) sources in each element can be deduced. While taking into account magnetic saturation in the iron region, the proposed NVNMC method can accurately predict the 3-D magnetic field distribution, hence determining the corresponding back-electromotive force and electromagnetic power. Apart from providing fast calculation, this analytical method can provide physical insight on how to optimize the design parameters of this CPPM machine. Finally, the accuracy of the proposed model is verified by comparing the analytical results with the results obtained by using FEM. As a result, with so many desired attributes, this method can be employed for machine initial optimization to achieve higher power density. |
| first_indexed | 2024-03-10T03:51:59Z |
| format | Article |
| id | doaj.art-2e3314724bd14b47ae9f73338a8ff080 |
| institution | Directory Open Access Journal |
| issn | 2032-6653 |
| language | English |
| last_indexed | 2024-03-10T03:51:59Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | World Electric Vehicle Journal |
| spelling | doaj.art-2e3314724bd14b47ae9f73338a8ff0802023-11-23T11:03:49ZengMDPI AGWorld Electric Vehicle Journal2032-66532021-12-0112425410.3390/wevj12040254Nonlinear Varying-Network Magnetic Circuit Analysis of Consequent-Pole Permanent-Magnet Motor for Electric VehiclesHui Wang0Kwok Tong Chau1Christopher H. T. Lee2C. C. Chan3Tengbo Yang4Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, ChinaDepartment of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, ChinaSchool of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, SingaporeDepartment of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, ChinaDepartment of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, ChinaTo conserve rare earth resources, consequent-pole permanent-magnet (CPPM) machine has been studied, which employs iron-pole to replace half PM poles. Meanwhile, to increase flux-weakening ability, hybrid excitation CPPM machine with three-dimensional (3-D) flux flow has been proposed. Considering finite element method (FEM) is time-consuming, for the analysis of the CPPM machine, this paper presents a nonlinear varying-network magnetic circuit (NVNMC), which can analytically calculate the corresponding electromagnetic performances. The key is to separate the model of CPPM machine into different elements reasonably; thus, the reluctances and magnetomotive force (MMF) sources in each element can be deduced. While taking into account magnetic saturation in the iron region, the proposed NVNMC method can accurately predict the 3-D magnetic field distribution, hence determining the corresponding back-electromotive force and electromagnetic power. Apart from providing fast calculation, this analytical method can provide physical insight on how to optimize the design parameters of this CPPM machine. Finally, the accuracy of the proposed model is verified by comparing the analytical results with the results obtained by using FEM. As a result, with so many desired attributes, this method can be employed for machine initial optimization to achieve higher power density.https://www.mdpi.com/2032-6653/12/4/254varying-network magnetic circuitconsequent-pole permanent-magnet machinethree-dimensional field distribution |
| spellingShingle | Hui Wang Kwok Tong Chau Christopher H. T. Lee C. C. Chan Tengbo Yang Nonlinear Varying-Network Magnetic Circuit Analysis of Consequent-Pole Permanent-Magnet Motor for Electric Vehicles World Electric Vehicle Journal varying-network magnetic circuit consequent-pole permanent-magnet machine three-dimensional field distribution |
| title | Nonlinear Varying-Network Magnetic Circuit Analysis of Consequent-Pole Permanent-Magnet Motor for Electric Vehicles |
| title_full | Nonlinear Varying-Network Magnetic Circuit Analysis of Consequent-Pole Permanent-Magnet Motor for Electric Vehicles |
| title_fullStr | Nonlinear Varying-Network Magnetic Circuit Analysis of Consequent-Pole Permanent-Magnet Motor for Electric Vehicles |
| title_full_unstemmed | Nonlinear Varying-Network Magnetic Circuit Analysis of Consequent-Pole Permanent-Magnet Motor for Electric Vehicles |
| title_short | Nonlinear Varying-Network Magnetic Circuit Analysis of Consequent-Pole Permanent-Magnet Motor for Electric Vehicles |
| title_sort | nonlinear varying network magnetic circuit analysis of consequent pole permanent magnet motor for electric vehicles |
| topic | varying-network magnetic circuit consequent-pole permanent-magnet machine three-dimensional field distribution |
| url | https://www.mdpi.com/2032-6653/12/4/254 |
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