Experimental Validation of Standards Compliant Inductive Wireless EV Charging Station with Misalignments and Installation Dependent Performance
Main Article Content
Abstract
This paper presents the design, implementation, and evaluation of a prototype inductive wireless power transfer (IPT) system for electric vehicle (EV) charging stations, developed to comply with international standards of IEC 61980-1 and SAE J2954. The system was tested under various coil misalignment conditions (in x, y, and z axes) and three installation configurations—on-ground, in-ground, and underground—to assess its performance and feasibility for practical deployment as a charging station.
Experimental results demonstrate that the IPT system delivers a maximum power output of 11.2 kW, with IPT’s efficiency reaching 90% and DC-to-DC overall system efficiency at 87% during high-current operation of 70 A. The prototype maintained stable performance under realistic misalignment conditions of up to ±160 mm in both lateral and longitudinal directions. In charging tests, the system successfully charged an EV battery from 40% to 95% state of charge within 110 minutes, while supplying power to both the battery and auxiliary loads.
These findings confirm the technical feasibility and reliability of the proposed IPT-based EV charging station. The system satisfies key requirements of the referenced standards and demonstrates strong potential for implementation in Thailand’s emerging EV charging infrastructure.
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References
S. Bolan, et al., “Impacts of climate change on the fate of contaminants through extreme weather events,” Science of The Total Environment, vol. 909, Jan. 2024, Art. no. 168388. doi: 10.1016/j.scitotenv.2023.168388.
P. Jeebklum and C. Sumpavakup, ”Metamaterial Slabs for Electric Vehicle Wireless Charging Application,” IEEE Access, vol. 12, pp. 156717-156729, 2024, doi: 10.1109/ACCESS.2024.3485180.
S. Fang, Z. Tian, C. J. Roberts, and R. Liao, “Guest Editorial: Special Section on Toward Low Carbon Industrial and Social Economy of Energy-Transportation Nexus,” IEEE Transactions on Industrial Informatics, vol. 18, pp. 8146–8148, Nov. 2022, doi: 10.1109/TII.2022.3185294.
S. P. Sathiyan et al.,”Comprehensive Assessment of Electric Vehicle Development, Deployment, and Policy Initiatives to Reduce GHG Emissions:
Opportunities and Challenges,” IEEE Access, vol. 10, pp. 53614-53639, 2022, doi: 10.1109/ACCESS. 2022.3175585.
U. Fesl and M. B. Özdemir, “Electric Vehicles: A Comprehensive Review of Technologies, Integration, Adoption, and Optimization,” IEEE Access, p. 1, Jan. 2024, doi: 10.1109/access.2024.3469054.
S. S. G. Acharige, M. E. Haque, M. T. Arif, N. Hosseinzadeh, K. N. Hasan, and A. M. T. Oo, ”Review of Electric Vehicle Charging Technologies, Standards, Architectures, and Converter Configurations,” IEEE Access, vol. 11, pp. 41218-41255, 2023, doi: 10.1109/ACCESS.2023.3267164.
S. A. Q. Mohammed and J.-W. Jung, “A Comprehensive State-of-the-Art Review of Wired/Wireless Charging Technologies for Battery Electric Vehicles: Classification/Common Topologies/Future Research Issues,” IEEE Access, vol. 9, pp. 19572–19585, Jan. 2021, doi: 10.1109/ACCESS.2021.3055027.
S. Yachiangkam et al., ”Wireless Golf Cart Charging Development in Thailand,” 2022 International Electrical Engineering Congress (iEECON), Khon Kaen, Thailand, 2022, pp. 1-4, doi: 10.1109/iEECON53204.2022.9741670.
A. Mahesh, B. Chokkalingam, and L. Mihet-Popa,“Inductive Wireless Power Transfer Charging for Electric Vehicles–A Review,” IEEE Access, vol. 9, pp. 137667–137713, Sep. 2021, doi: 10.1109/ACCESS. 2021.3116678.
J. -J. Kao, C.-L. Lin and J. Yang, ”Adaptive Wireless Power Transfer System With Relay Transmission and Communication,” IEEE Transactions on Power
Electronics, vol. 38, no. 3, pp. 4110-4123, March 2023, doi: 0.1109/TPEL.2022.3218368.
SAE International, “J2954: Wireless power transfer for light-duty plugin/electric vehicles and alignment methodology,” 2017.
IEC Standards, IEC 61980-1 Electric Vehicle Wireless Power Transfer (WPT) System – Part 1: General Requirements, edition 1.0, International Standards,
pp. 17, 2015.
I. Casaucao, A. Triviño‐Cabrera, and A. Delgado, “Ferromagnetic design of coils considering misalignment effects for a SAE J2954-compliant EV wireless charger,” IEEE Access, p. 1, Jan. 2024, doi: 10.1109/access.2024.3492350.
V. Cirimele, F. Freschi, and L. Zhao, “Critical comparative review of international standards on wireless charging for light-duty electric vehicles,”
IEEE Transactions on Industry Applications, pp. 1– 10, Jan. 2024, doi: 10.1109/tia.2024.3408107.
J. Zeng, J. Wu, K. Li, Y. Yang, and S. Y. R. Hui, ”Dynamic Monitoring of Battery Variables and Mutual Inductance for Primary-Side Control of a Wireless Charging System,” IEEE Transactions on Industrial Electronics, vol. 71, no. 7, pp. 7966-7974, July 2024, doi: 10.1109/TIE.2023.3312440.
D. Patil, M. K. McDonough, J. M. Miller, B. Fahimi and P. T. Balsara, ”Wireless Power Transfer for Vehicular Applications: Overview and Challenges,” IEEE Transactions on Transportation Electrification, vol. 4, no. 1, pp. 3-37, March 2018, doi: 10.1109/TTE.2017.2780627.
Y. Tian, Z. Li, H. Liu, Y. Liu and M. Ban, ”High- Performance Wireless Charging System Using Interleaved Buck Converter and Integrated Solenoid
Magnetic Coupler,” in IEEE Transactions on Transportation Electrification, vol. 9, no. 3, pp. 3821-3835, Sept. 2023, doi: 10.1109/TTE.2023.3245087.
H. -L. Jou, J. -C. Wu, K. -D. Wu and C. - Y. Kuo, ”Bidirectional DC–DC Wireless Power Transfer Based on LCC-C Resonant Compensation,” IEEE Transactions on Power Electronics, vol. 36, no. 2, pp. 2310-2319, Feb. 2021, doi: 10.1109/TPEL.2020.3005804.
M. Kim, D. -M. Joo and B. K. Lee, ”Design and Control of Inductive Power Transfer System for Electric Vehicles Considering Wide Variation of Output
Voltage and Coupling Coefficient,” IEEE Transactions on Power Electronics, vol. 34, no. 2, pp. 1197- 1208, Feb. 2019, doi: 10.1109/TPEL.2018.2835161.
J. M. González-González, A. Triviño-Cabrera, and J. A. Aguado, ”Model Predictive Control toMaximize the Efficiency in EV Wireless Chargers,” IEEE Transactions on Industrial Electronics, vol. 69, no. 2, pp. 1244-1253, Feb. 2022, doi: 10.1109/TIE.2021.3057006.
A. Babaki, S. Vaez-Zadeh, A. Zakerian, and G. A. Covic, ”Variable-Frequency Retuned WPT System for Power Transfer and Efficiency Improvement in
Dynamic EV Charging With Fixed Voltage Characteristic,” IEEE Transactions on Energy Conversion, vol. 36, no. 3, pp. 2141-2151, Sept. 2021, doi: 10.1109/TEC.2020.3048196.
Lassioui, Abdellah, Marouane El Ancary, Zakariae El Idrissi, Hassan El Fadil, Kamal Rachid, and Aziz Rachid. 2024. ”Primary-Side Indirect Control of the Battery Charging Current in a Wireless Power Transfer Charger Using Adaptive Hill-Climbing Control Technique” Processes 12, no. 6: 1264.
G. R. Kalra, B. S. Riar and D. J. Thrimawithana, ”An Integrated Boost Active Bridge Based Secondary Inductive Power Transfer Converter,” IEEE Transactions on Power Electronics, vol. 35, no. 12, pp. 12716-12727, Dec. 2020, doi: 10.1109/TPEL.2020.2984784.
J. Thongpron, et al., ”A 10 kW Inductive Wireless Power Transfer Prototype for EV Charging in Thailand,” ECTI Transactions on Electrical Engineering, Electronics, and Communications, vol. 20, no. 1, pp. 83-95, Feb 2022.
T. Somsak, et al., ”Constant Current - voltage with Maximum Efficiency Inductive Wireless EV Charging Control using Dual-sided DC Converters,”
18th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON),
Chiang Mai, Thailand, 2021, pp. 936-941, doi: 10.1109/ECTI-CON51831.2021.9454726.
A. Namin, et al., ”Solar Tricycle with Lateral Misalignment Maximum Power Point Tracking Wireless Power Transfer,” 2018 15th International Conference
on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), Chiang Rai, Thailand, 2018, pp. 656-659, doi: 10.1109/ECTICon.2018.8619926.
IEC, ”IEC TS 61980-2: Electric Vehicle Wireless Power Transfer (WPT) – Part 2: Specific Requirement for Communication between Electric Road Vehicle (EV) and Infrastructure,” IEC, Geneva, Switzerland, 2019, 85 p.
IEC, ”CISPR 11: Industrial, Scientific and Medical Equipment – Radio-frequency Disturbance Characteristics – Limits and Methods of Measurement,”
International Electrotechnical Commission, Geneva, Switzerland, 2021.
IEC, ”IEC TS 61980-3: Electric Vehicle Wireless Power Transfer (WPT) – Part 3: Specific Requirement for Magnetic Field Wireless Power Transfer System,” IEC, Geneva, Switzerland, 2019, 107 p.
S. Mueangngoen, and Y. Kumsuwan, “Essen tial Testing and Stepwise Evaluation of Lithium- Ion Battery Packs for Electric Vehicles,” ECTI Transactions on Electrical Engineering, Electronics, and Communications, vol.23, no.2, 2025, https://doi.org/10.37936/ecti-eec.2525232.259270
W. San-Um and T. Masayoshi, “An On-Chip Analog Mixed-Signal Testing Compliant with IEEE 1149.4 Standard Using Fault Signature Characterization Technique,” ECTI Transactions on Electrical Engineering, Electronics, and
Communications, vol. 8, no. 1, 2009, pp.85–92. https://doi.org/10.37936/ecti-eec.201081.172036.
U. Kamnarn et al., ”CC–CV Wireless EV Charging With Power Balance Control in Primaryand Secondary-Side Converters,” IEEE Access, vol.13, pp. 151597-151613, 2025, doi: 10.1109/ACCESS. 2025.3602478.
A. Namin, C Donloei, and E. Chaidee, ”Wireless charging Class-E inverter for zero-voltage switching over coupling coefficient range,” International Journal of Power Electronics and Drive Systems (IJPEDS), vol. 16, no. 3, September 2025, pp. 1752-1764. doi: http://doi.org/10.11591/ijpeds.v16.i3.pp1752-1764.
T. Singhavilai, et al., ”Evaluating Wireless Power Transfer Technologies for Electric Vehicles: Efficiency and Practical Implementation of Inductive, Capacitive, and Hybrid Systems,” IEEE Access, vol. 13, pp. 9792-9808, 2025, doi: 10.1109/ACCESS. 2025.3527122.
