| Author: | Jiang, Mingyuan |
| Title: | Design and analysis of high-torque-density direct-drive in-wheel vernier permanent magnet synchronous machine for electric vehicles |
| Advisors: | Fu, Weinong (EE) |
| Degree: | M.Sc. |
| Year: | 2021 |
| Subject: | Electric motors -- Electronic control Electric vehicles -- Motors Hong Kong Polytechnic University -- Dissertations |
| Department: | Department of Electrical Engineering |
| Pages: | vii, 107 pages : color illustrations |
| Language: | English |
| Abstract: | Permanent Magnet Synchronous Machine (PMSM) has a variety of applications in the field of Electric Vehicle (EV). Comparing with other structures of machine, PMSM has higher power density and efficiency. These characteristics indicate that PMSM is more compact and energy-saving, which is suitable for EVs. To maximize the advantage of saving more energy resources, high-efficiency and high-torque-density electric machines for EV drive are highly expected to develop. With the development of PM material and power electronic devices, the direct-drive in-wheel PMSM with no mechanical structure of gearbox seems to get more attention nowadays. The Vernier structure is often adopted for the direct-drive machine because of its high-torque-density characteristic. Therefore, the design and analysis of direct-drive in-wheel Vernier PMSM will be the focus of this dissertation. This dissertation's primary purpose is to select a direct-drive in-wheel Vernier PMSM that meets EV in-wheel motor specifications. Various structures of in-wheel motors will be designed and analyzed by Finite Element Method (FEM), as different arrangements can significantly affect the performance of the machines. Their performance after analysis will be compared to decide which configuration suits the specification best. The result shows that the dual-airgap dual-PM Vernier structure is the most suitable EV direct-drive in-wheel machine. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 5921.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 7.23 MB | Adobe PDF | View/Open |
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