Improvements of the Starting Performance of A Novel Brushless Doubly-fed Motor Based on the Composite Coils
Abstract
:1. Introduction
2. The Principle of Composite Coils
2.1. The Structure of Composite Coils
2.2. The Running Condition of Composite Coils
2.3. The Starting Condition of Composite Coils
3. Winding Design Example
3.1. Rotor Winding Design
3.2. Stator Winding Design
4. Simulation and Experimental Research
4.1. Effect of Composite Coil Set on Starting Torque
4.2. Simulation Comparison and Test of No-Load Starting Performance of Prototype
4.3. Simulation Comparison and Test of With-Load Starting Performance of Prototype
5. Conclusions
- (1)
- When the motor starts, the composite coil structure can reduce the effective coil-turns of the rotor winding, hence increasing the referred value of the rotor winding to reduce the starting current and improve the starting torque.
- (2)
- Through the analysis of the operating state and the principle of the composite coil, we find that magnetic fields with different pole-pairs make the composite coil have different operating states. Therefore, we use the winding designed by the pole-changing method for the stator to control the operating state of the composite coil.
- (3)
- On comparing the simulation and test results of the three modes, the starting current is effectively suppressed in mode 1, especially at the moment of start-up. Meanwhile, the prototype has been confirmed to have a better load-carrying performance.
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Item | Value (mm) |
---|---|
Stator Outer Diameter | 215 |
Stator Inner Diameter | 130 |
Length of the Gap | 0.4 |
Rotor Outer Diameter | 129.2 |
Rotor Inner Diameter | 50 |
Length of the Core | 190 |
Torque (N·m) | Mode 1 | Mode 2 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
CW/A | PW/A | n/rpm | CW/A | PW/A | n/rpm | |||||||
TEST | FEA | TEST | FEA | TEST | FEA | TEST | FEA | TEST | FEA | TEST | FEA | |
5 | 3.2 | 3.3 | 4.0 | 3.9 | 909 | 907 | - | - | 13.1 | 12.6 | 503 | 498 |
10 | 3.4 | 3.3 | 4.0 | 4.0 | 828 | 833 | - | - | 15.3 | 14.7 | 491 | 487 |
15 | 3.4 | 3.5 | 5.0 | 4.9 | 729 | 735 | - | - | 18.1 | 18.3 | 473 | 460 |
20 | 3.6 | 4.0 | 5.6 | 5.4 | 634 | 645 | - | - | 20.1 | 18.5 | 459 | 440 |
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Ruan, Z.; Kan, C.; Chu, C.; Ren, T.; Chen, Q. Improvements of the Starting Performance of A Novel Brushless Doubly-fed Motor Based on the Composite Coils. Energies 2019, 12, 1157. https://doi.org/10.3390/en12061157
Ruan Z, Kan C, Chu C, Ren T, Chen Q. Improvements of the Starting Performance of A Novel Brushless Doubly-fed Motor Based on the Composite Coils. Energies. 2019; 12(6):1157. https://doi.org/10.3390/en12061157
Chicago/Turabian StyleRuan, Zhiwei, Chaohao Kan, Chenglong Chu, Taian Ren, and Qiuming Chen. 2019. "Improvements of the Starting Performance of A Novel Brushless Doubly-fed Motor Based on the Composite Coils" Energies 12, no. 6: 1157. https://doi.org/10.3390/en12061157
APA StyleRuan, Z., Kan, C., Chu, C., Ren, T., & Chen, Q. (2019). Improvements of the Starting Performance of A Novel Brushless Doubly-fed Motor Based on the Composite Coils. Energies, 12(6), 1157. https://doi.org/10.3390/en12061157