Minimization of Torque Ripples in Multi-Stack Slotted Stator Axial-Flux Synchronous Machine by Modifying Magnet Shape
Abstract
:1. Introduction
2. Proposed Model
2.1. Proposed Magnet
2.2. Design of the Slotted Stator AFPMSM
2.3. Comparative Performance Analysis for Conventional AFPMSM and Proposed AFPMSM
3. Optimization
3.1. Design Variable Selection
3.2. Process of Optimization
3.3. Results of the Optimized Design
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Parameter | Conventional Model | Proposed Model |
---|---|---|
Rotation | 800 rpm | |
Number of poles | 20 | |
Number of coils | 24 | |
Connection | star | |
Air gap | 2 mm | |
Rotor yoke height | 6 mm | |
Br | 1.2 T | |
Number of slots | 24 | |
Coil height | 9 mm | |
Nph | 144 | |
Do/Di | 296/200 mm | |
Volume of PM | 6228 mm3 | |
Per phase resistance | 0.016 ohms | |
H | 5 mm | |
Stator yoke height | 11 mm | |
Inner tooth width | 12.16 mm | |
Outer tooth width | 24.71 mm | |
Slot width | 14 mm | |
Slot height | 14 mm |
Parameter | Unit | Conventional Model | Proposed Model |
---|---|---|---|
Internal generated voltage (Ef) | Vrms | 132.10 | 138.50 |
Voltage regulation | % | 19.97 | 17.55 |
VTHD | % | 4.27% | 4.99% |
Iron loss | W | 2180 | 1965 |
Efficiency | % | 89.4 | 91.05 |
Power (Pavg) | W | 20,029 | 22,105 |
Cogging torque (Tpk2pk) | Nm | 70.32 | 36.2 |
Torque (Tavg) | Nm | 249.4 | 275 |
Bg | T | 0.778 | 0.634 |
Parameter | Unit | Proposed | Optimized |
---|---|---|---|
X1 | mm | 132.10 | 48.002 |
X2 | mm | 70.32 | 28.011 |
X3 | mm | 249.4 | 15.724 |
Total height of machine | mm | 124 | 124 |
Volume of PM | mm3 | 6228 | 6228 |
Parameter | Unit | Proposed | Optimized |
---|---|---|---|
Internal generated voltage (Ef) | Vrms | 138.50 | 140.3 |
Voltage regulation | % | 17.04 | 17.25 |
VTHD | % | 4.99% | 6.29% |
Iron loss | W | 1965 | 2147 |
Efficiency | % | 91.05 | 90.6 |
Power (Pavg) | W | 22,105 | 22,614 |
Cogging torque (Tpk2pk) | Nm | 36.2 | 27.87 |
Torque (Tavg) | Nm | 275 | 281 |
Bg | T | 0.634 | 0.588 |
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Mahmood, Z.; Ikram, J.; Badar, R.; Bukhari, S.S.H.; Ali Shah, M.; Memon, A.A.; Huba, M. Minimization of Torque Ripples in Multi-Stack Slotted Stator Axial-Flux Synchronous Machine by Modifying Magnet Shape. Mathematics 2022, 10, 1653. https://doi.org/10.3390/math10101653
Mahmood Z, Ikram J, Badar R, Bukhari SSH, Ali Shah M, Memon AA, Huba M. Minimization of Torque Ripples in Multi-Stack Slotted Stator Axial-Flux Synchronous Machine by Modifying Magnet Shape. Mathematics. 2022; 10(10):1653. https://doi.org/10.3390/math10101653
Chicago/Turabian StyleMahmood, Zia, Junaid Ikram, Rabiah Badar, Syed Sabir Hussain Bukhari, Madad Ali Shah, Ali Asghar Memon, and Mikulas Huba. 2022. "Minimization of Torque Ripples in Multi-Stack Slotted Stator Axial-Flux Synchronous Machine by Modifying Magnet Shape" Mathematics 10, no. 10: 1653. https://doi.org/10.3390/math10101653