Addressing EMI and EMF Challenges in EV Wireless Charging with the Alternating Voltage Phase Coil
Abstract
:1. Introduction
- Primary objective: Develop and validate the AVPC design, demonstrating its effectiveness in reducing EMI and E-field emissions while maintaining efficient power transfer, thus addressing the most pressing safety and performance issues in traditional wireless charging systems.
- Experimental validation: Conduct comprehensive testing to measure the EMF emissions of the AVPC under various operating conditions and compare the results with those of traditional coil systems to quantify improvements in field management.
- Safety and efficiency metrics: Assess the safety improvements brought by the AVPC, particularly through reduced EMF exposure, and analyze the system’s efficiency in terms of power transfer and energy loss.
- Design optimization: Explore new design variations of the AVPC based on the findings from the previous objectives, aimed at further enhancing its performance, safety, and compatibility with high-power wireless charging applications.
2. Proposed Coil Structure Compared to the Traditional Coil
2.1. Structural Design and Development of AVPC
2.2. Simulation Setup and Preliminary Results
2.3. Waveform Analysis and E-Field Mitigation through Spice Simulation
3. Simulation Analysis of the Coil
3.1. Simulation Parameters and Setup
3.2. Electromagnetic Field Distribution and the Impact of Conductive Materials
3.3. Evaluating Electric Field Mitigation and Similar Magnetic Field Distribution in Coil Design
4. Experimental Setup of Coil Design and Result Verification
4.1. Methodical Assessment and Verification of Coil Design Performance
4.2. Detailed Analysis of E-Field Emission Findings
4.3. Quantitative Assessment of E-Field Mitigation in AVPC Designs
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Feature | Conventional Coil | AVPC |
---|---|---|
E-field emission reduction | Limited | Significantly improved |
Energy transfer efficiency | High | Comparable to conventional coils |
E-field neutralization method | Capacitors (complex) | Design configuration |
Innovative current flow sequence | No | Yes |
Sequential turn progression | Turns in sequence | Not applicable |
Adaptability to various devices | Limited | Broad (EVs, mobiles, medical equipment) |
Coil | Inductance (uH) | Parameter | Value |
---|---|---|---|
L1 | 0.120 | Input AC current I | 5 A |
L2 | 0.087469 | Resonant frequency | 85 KHz |
L3 | 0.060760 | Shielding plate | 74 mm × 74 mm × 1 mm |
L4 | 0.043119 | Ferrite core 1 | 72 mm × 72 mm × 2 mm |
L5 | 0.030174 | Coil dimension | 70 mm × 70 mm × 3 mm |
L6 | 0.019673 | Coil turn to turn spacing | 1.5 mm |
Parameters | Values |
---|---|
Input AC current | 5 A |
Resonant frequency | 85 KHz |
Shielding plate dimension | 420 mm × 420 mm × 4 mm |
Ferrite core dimension | 404 mm × 404 mm × 5 mm |
Coil dimension | 400 mm × 400 mm × 2.5 mm |
Number of turns | 22 Turns |
Coil inductance | 336.4 uH |
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Shafiq, Z.; Li, T.; Xia, J.; Li, S.; Yang, X.; Zhao, Y. Addressing EMI and EMF Challenges in EV Wireless Charging with the Alternating Voltage Phase Coil. Actuators 2024, 13, 324. https://doi.org/10.3390/act13090324
Shafiq Z, Li T, Xia J, Li S, Yang X, Zhao Y. Addressing EMI and EMF Challenges in EV Wireless Charging with the Alternating Voltage Phase Coil. Actuators. 2024; 13(9):324. https://doi.org/10.3390/act13090324
Chicago/Turabian StyleShafiq, Zeeshan, Tong Li, Jinglin Xia, Siqi Li, Xi Yang, and Yu Zhao. 2024. "Addressing EMI and EMF Challenges in EV Wireless Charging with the Alternating Voltage Phase Coil" Actuators 13, no. 9: 324. https://doi.org/10.3390/act13090324