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| Content Provider | IET Digital Library |
|---|---|
| Author | Li, Jian Wang, Kai Zhang, Han |
| Abstract | In recent years, consequent-pole permanent magnet (CPM) machines draw much attention due to their high utilisation ratio of permanent magnet (PM) material. However, they have some disadvantages, such as the even-order harmonics of airgap flux density, which may cause asymmetric phase back-EMF and the increase of torque ripple. In this study, a novel hybrid-pole PM (HPM) machine is proposed, in which the rotor combines consequent-pole and spoke-type PM rotors. The working principle of the proposed HPM machine is analysed based on the equivalent magnetic circuit, and validated by the finite-element method. Then, the electromagnetic performance of the HPM machine is compared with those of the existing CPM and spoke-type PM machines. It is shown that the HPM machine obtains similar average torque, PM utilisation ratio, torque ripple and efficiency to the spoke-type PM machine, whilst it has a higher PM utilisation ratio and much lower torque ripple than the conventional CPM machines. Finally, these analyses are validated by the tested results of a 9-slot/6-pole HPM machine. |
| Starting Page | 648 |
| Ending Page | 657 |
| Page Count | 10 |
| ISSN | 17518660 |
| Volume Number | 14 |
| e-ISSN | 17518679 |
| Issue Number | Issue 4, Apr (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-epa/14/4 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2019.0523 |
| Journal | IET Electric Power Applications |
| Publisher Date | 2019-12-16 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | A.C. Machine Airgap Flux Density Asymmetric Phase Back-EMF Brushless Machines Comparative Analysis Consequent-pole Permanent Magnet Machines Control of Electric Power System Conventional CPM Machines D.C. Machines Equivalent Magnetic Circuit Finite Element Analysis High Utilisation Ratio Higher PM Utilisation Ratio HPM Machine Obtains Similar Average Torque Hybrid-pole Permanent Magnet Machine Lower Torque Ripple Machine Windings Magnetic Circuit Magnetic Flux Permanent Magnet Machine Permanent Magnet Material Permanent Magnet Motors Rotors Spoke-type PM Synchronous Machine Torque |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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