Comparison and Analysis of Electromagnetic Characteristics of Basic Structure of Wireless Power Coil for Permanent Magnet Motors in Electric Vehicles
Abstract
:1. Introduction
2. Modeling and Analysis
2.1. Derivation of Circular Coil Magnetic Flux Density
2.2. Derivation of Square Coil Magnetic Flux Density
2.3. Qualitative Analysis of Electromagnetic Properties
3. Numerical Simulations
3.1. Normalized Coupling Coefficient Comparison
3.2. Coupling Mutual Inductance Comparison
4. Experimental Validation
5. Discussion of the Electromagnetic Characteristics of Two Basic Coil Shapes
6. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Coil Type | Offset Resistance | Magnetic Leakage | Losses (nH) | Coefficient (%) |
---|---|---|---|---|
Flux pipe | better | larger | larger | 42 (offset) |
H | better | larger | larger | 90 |
DD | better | smaller | average | 95.66 |
DDQ | better | smaller | smaller | 95 |
BP | average | smaller | smaller | 92.85 |
Coil Type | Pacing (m) | Area (m2) | Mutual Inductance (nH) | Coupling Coefficient (%) |
---|---|---|---|---|
circular | 0.3 | 0.09 | 30 | 2.52 |
hybrid | 29 | 2.4 | ||
rectangular | 28 | 2.23 | ||
circular | 0.16 | 67.5 | 4.13 | |
hybrid | 66.9 | 3.94 | ||
rectangular | 65.5 | 3.75 | ||
circular | 0.25 | 120 | 5.62 | |
hybrid | 119.19 | 5.4 | ||
rectangular | 117.5 | 5.15 |
Coil Type | Pacing (m) | Area (m2) | Perimeter (m) | Outer Diameter (m) | Mutual Inductance (nH) | Coupling Coefficient (%) |
---|---|---|---|---|---|---|
circular | 0.3 | 0.09 | 1.06 | 0.34 | 30 | 2.52 |
hybrid | 29 | 2.4 | ||||
rectangular | 1.2 | 0.3 | 28 | 2.23 | ||
circular | 0.11 | 1.2 | 0.38 | 42.22 | 3.12 | |
hybrid | 34.95 | 2.69 | ||||
rectangular | 0.09 | 0.3 | 28 | 2.23 | ||
circular | 0.07 | 0.94 | 0.3 | 19.99 | 1.97 | |
hybrid | 23.7 | 2.1 | ||||
rectangular | 0.09 | 1.2 | 28 | 2.23 |
Coil Type | Pacing | Mutual Inductance | Coupling Coefficient |
---|---|---|---|
(mm) | (uH) | (%) | |
circular | 67.82 | 0.857 | 11.5 |
hybrid | 0.844 | 11.21 | |
rectangular | 0.735 | 9.66 | |
circular | 79.17 | 0.609 | 8.17 |
hybrid | 0.607 | 8.06 | |
rectangular | 0.593 | 7.8 | |
circular | 105.17 | 0.332 | 4.46 |
hybrid | 0.329 | 4.37 | |
rectangular | 0.326 | 4.29 |
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Zhao, J.; Zhao, L.; Zou, Y.; Chen, T. Comparison and Analysis of Electromagnetic Characteristics of Basic Structure of Wireless Power Coil for Permanent Magnet Motors in Electric Vehicles. World Electr. Veh. J. 2023, 14, 199. https://doi.org/10.3390/wevj14080199
Zhao J, Zhao L, Zou Y, Chen T. Comparison and Analysis of Electromagnetic Characteristics of Basic Structure of Wireless Power Coil for Permanent Magnet Motors in Electric Vehicles. World Electric Vehicle Journal. 2023; 14(8):199. https://doi.org/10.3390/wevj14080199
Chicago/Turabian StyleZhao, Junfeng, Lingyun Zhao, Yuwei Zou, and Tianjin Chen. 2023. "Comparison and Analysis of Electromagnetic Characteristics of Basic Structure of Wireless Power Coil for Permanent Magnet Motors in Electric Vehicles" World Electric Vehicle Journal 14, no. 8: 199. https://doi.org/10.3390/wevj14080199