A Method for Reducing Cogging Torque of Integrated Propulsion Motor
Abstract
:1. Introduction
2. Motor Model Description
3. Cogging Torque Analysis Model
3.1. The Magnetic Field of Slotless Model
3.2. The Magnetic Field of the Slotted Model
4. Optimization of Halbach Auxiliary Pole Size
4.1. Calculate Sample Data
4.2. Size Optimization
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Structural Parameters | Value | Structural Parameters | Value |
---|---|---|---|
Number of pole pairs | 10 | Stator tooth height (mm) | 14 |
Number of slots | 60 | Rotor outer diameter (mm) | 319 |
OD of stator (mm) | 380 | Rotor yoke thickness (mm) | 6 |
ID of stator (mm) | 324 | Main pole thickness (mm) | 3.5 |
Notch width (mm) | 2.8 | Pole embrace | 0.7 |
Stator tooth width (mm) | 6.6 |
Cogging Torque (Nm) | Radial Thickness of Auxiliary Pole (mm) | |||||||
---|---|---|---|---|---|---|---|---|
2.7 | 2.9 | 3.1 | 3.3 | 3.5 | 3.7 | 3.9 | ||
Pole Embrace | 0.60 | 5.354 | 5.281 | 5.196 | 5.054 | 4.527 | 4.268 | 4.493 |
0.65 | 1.867 | 1.424 | 0.945 | 0.546 | 1.122 | 1.932 | 3.080 | |
0.70 | 2.936 | 3.531 | 4.156 | 5.593 | 6.585 | 7.258 | 8.236 | |
0.75 | 5.182 | 5.545 | 5.917 | 6.366 | 6.842 | 7.412 | 8.475 | |
0.80 | 5.852 | 6.210 | 6.620 | 7.120 | 7.689 | 8.450 | 9.297 |
Comparison Items | The Reduction Percentages |
---|---|
Cogging Torque | 88% |
Torque Ripple | 45% |
Average Electromagnetic Torque | Not changes |
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Ou, H.; Hu, Y.; Mao, Z.; Li, Y. A Method for Reducing Cogging Torque of Integrated Propulsion Motor. J. Mar. Sci. Eng. 2019, 7, 236. https://doi.org/10.3390/jmse7070236
Ou H, Hu Y, Mao Z, Li Y. A Method for Reducing Cogging Torque of Integrated Propulsion Motor. Journal of Marine Science and Engineering. 2019; 7(7):236. https://doi.org/10.3390/jmse7070236
Chicago/Turabian StyleOu, Huanyu, Yuli Hu, Zhaoyong Mao, and Yukai Li. 2019. "A Method for Reducing Cogging Torque of Integrated Propulsion Motor" Journal of Marine Science and Engineering 7, no. 7: 236. https://doi.org/10.3390/jmse7070236