Design and Optimization of a Novel Wound Field Synchronous Machine for Torque Performance Enhancement
Abstract
:1. Introduction
2. Analysis of the Investigated Motor
2.1. The Basic WFSM
2.2. The Proposed Model with Assisted-PM
2.3. Electromagnetic Performance Analysis
2.3.1. Principle
2.3.2. The Performance Comparison between the Basic and Proposed Models
3. Rotor Shape Optimization
3.1. The Process of Rotor Shape Optimization
- Objective functions:
- Constraints:
- Design variables:
3.2. Optimal Design Results and Discussion
3.2.1. Convergence Results of Variables
3.2.2. Characteristics Analysis Results by 2-D FEA
4. Performance Comparison
4.1. Back Electromotive Forces (Back-EMFs)
4.2. The Magnetic Flux Density Distribution
4.3. Demagnetization Analysis
4.4. Mises Stress Analysis
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Item | Unit | Basic |
---|---|---|
Slots/poles | - | 6/4 |
Rated current | A | 1.6 |
Rated speed | rpm | 1500 |
Stator outer diameter | mm | 88 |
Stator inter diameter | mm | 51 |
Airgap length | mm | 0.5 |
Motor axial length | mm | 52 |
Magnetic motive force | At | 80 |
Segment distance | mm | 0.7 |
Magnet volume | mm3 | 0 |
Rotor slot filling ratio | - | 0.45–0.60 |
Item | Unit | Basic | Proposed |
---|---|---|---|
Power@1500 | W | 50.11 | 58.90 |
Torque | Nm | 0.319 | 0.375 |
Reluctance torque | Nm | 0.087 | 0.093 |
Efficiency | % | 87.6 | 87.5 |
Torque ripple | % | 29.9 | 44.7 |
Item | Unit | Optimal |
---|---|---|
Power@1500 | W | 65.97 |
Torque | Nm | 0.420 |
Reluctance torque | Nm | 0.095 |
Efficiency | % | 87.6 |
Torque ripple | % | 29.0 |
Quantity | Unit | Value |
---|---|---|
Density | Kg/m3 | 7700 |
Young’s modulus | GPa | 207 |
Poisson’s ratio | - | 0.3 |
Tensile strength | MPa | 451 |
Yield strength | MPa | 304 |
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Chai, W.; Lipo, T.A.; Kwon, B.-i. Design and Optimization of a Novel Wound Field Synchronous Machine for Torque Performance Enhancement. Energies 2018, 11, 2111. https://doi.org/10.3390/en11082111
Chai W, Lipo TA, Kwon B-i. Design and Optimization of a Novel Wound Field Synchronous Machine for Torque Performance Enhancement. Energies. 2018; 11(8):2111. https://doi.org/10.3390/en11082111
Chicago/Turabian StyleChai, Wenping, Thomas A. Lipo, and Byung-il Kwon. 2018. "Design and Optimization of a Novel Wound Field Synchronous Machine for Torque Performance Enhancement" Energies 11, no. 8: 2111. https://doi.org/10.3390/en11082111