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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yubo Yang Xiuhe Wang Changqing Zhu Chuanzhen Huang |
| Copyright Year | 2009 |
| Description | Author affiliation: Shandong University, Jinan, China (Yubo Yang; Xiuhe Wang; Changqing Zhu; Chuanzhen Huang) |
| Abstract | In order to reduce cogging torque of permanent magnet(PM) motor, the lower harmonics of cogging torque should be reduced. It is found that if the slot number per pole is not an integer, new lower harmonics of cogging torque may be introduced when the method of asymmetry magnet is adopted. To reduce cogging torque, both the lower original and newly introduced harmonics of cogging torque should be reduced. In this paper, the analytical expression of cogging torque with asymmetry magnet is got. Based on the distribution of the square of residual flux density of PM, the analytical expression of its Fourier coefficient can be got. If the Fourier coefficient of the square of residual flux density of PM is reduced by asymmetry magnet, the corresponding harmonics of cogging torque can be reduced. So in order to eliminate the lower harmonics of cogging torque, we can let Fourier coefficient(which is corresponding to the lower harmonics of cogging torque) to be zero. By solving the system of equations, we can get the shifting angles of magnets. It is verified at last that the cogging torque can be greatly reduced by the shifting angles got in this paper. |
| Starting Page | 2325 |
| Ending Page | 2328 |
| File Size | 444899 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424427994 |
| DOI | 10.1109/ICIEA.2009.5138614 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-05-25 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Forging Torque Permanent magnet motors Magnetic flux Magnetostatics Magnetic analysis Equations Permeability Position control Geometry cogging torque asymmetry magnet permanent magnet motor |
| Content Type | Text |
| Resource Type | Article |
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