Human Electromagnetic Exposure Safety Assessment of EV-WPT System Based on PCE Method

Le Gao; Enning Guo; Lei Liu

doi:10.54691/gypw6m35

Authors

Le Gao
Enning Guo
Lei Liu

DOI:

https://doi.org/10.54691/gypw6m35

Keywords:

Wireless Power Transfer; Electric Vehicles; Polynomial Chaos Expansion.

Abstract

Wireless power transfer (WPT) offers a safe and convenient charging solution for electric vehicles (EVs). However, electromagnetic exposure may pose risks to humans, especially with metallic implants. This paper builds an EV-WPT model and a human anatomical model with tibial implants to analyze induced fields. Using Polynomial Chaos Expansion (PCE), the uncertainties of tissue properties and implant positions are quantified. Results show field concentration near implant edges and provide a probabilistic safety assessment.

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References

[1] Kim H, Lee J, Lee J, et al. Topology optimization of a magnetic resonator using finite-difference time-domain method for wireless energy transfer[J]. IEEE Transactions on Magnetics, 2015, 52(3): 1-4.

[2] Kim J H, Lee B S, Lee J H, et al. Development of 1-MW inductive power transfer system for a high-speed train[J]. IEEE Transactions on Industrial Electronics, 2015, 62(10): 6242-6250.

[3] Chakarothai J, Wake K, Arima T, et al. Exposure evaluation of an actual wireless power transfer system for an electric vehicle with near-field measurement[J]. IEEE Transactions on Microwave Theory and Techniques, 2017, 66(3): 1543-1552.

[4] Park S. Evaluation of electromagnetic exposure during 85 kHz wireless power transfer for electric vehicles[J]. IEEE Transactions on Magnetics, 2017, 54(1): 1-8.

[5] Guo R, Zheng J, Wang Y U, et al. Computational and experimental investigation of RF‐induced heating for multiple orthopedic implants[J]. Magnetic resonance in medicine, 2019, 82(5): 1848-1858.

[6] "IEEE Recommended Practice for Determining the Peak Spatial-Average Specific Absorption Rate (SAR) in the Human Head from Wireless Communications Devices: Measurement Techniques," in IEEE Std 1528-2013 (Revision of IEEE Std 1528-2003), vol., no., pp.1-246, 6 Sept. 2013.

[7] Higaki N, Shiba K. Analysis of Specific Absorption Rate and Current Density in Biological Tissues Surrounding Energy Transmission Transformer for an Artificial Heart: Using Magnetic Resonance Imaging‐based Human Body Model[J]. Artificial Organs, 2010, 34(1): E1-E9.

[8] Hirata A, Fujiwara O. Dosimetry in Japanese male and female models for a low-frequency electric field[J]. Physics in Medicine & Biology, 2007, 52(15): N339.

[9] Choi S Y, Gu B W, Jeong S Y, et al. Advances in wireless power transfer systems for roadway-powered electric vehicles[J]. IEEE Journal of emerging and selected topics in power electronics, 2014, 3(1): 18-36.