Quasi-Dynamic Electromagnetic Field Safety Analysis and Mitigation for High-Power Dynamic Wireless Charging of Electric Vehicles

Zhang, Bo; Carlson, Richard Barney; Galigekere, Veda Prakash; Onar, Omer C.; Mohammad, Mostak; Dickerson, Charles C.; Walker, Lee K.

doi:10.1109/itec51675.2021.9490192

Cited by 8 publications

(8 citation statements)

References 21 publications

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“…8 presents the results for the EM emission simulation comparison along with a side-to-side direction under normal and cold weather operation conditions. The simulation model is preliminarily verified in static mutual-inductance measurement in Zhang, et al [6]. According to the results shown in Fig.…”

Section: Simulation Studies Of Temperature Impact On Shielding Perfor...mentioning

confidence: 95%

“…As a high-permeability material, ferrite is widely used as a shielding component for high-power WPT and dWPT prototypes [6]. Because the charging pads might be exposed to a high-and low-temperature environment, it is vital to study the EM characteristics of the ferrite material under extreme temperature conditions to ensure proper operation.…”

Section: Permeability-temperature Characteristic Tests Of Ferrite Mat...mentioning

confidence: 99%

“…A 200-kW dWPT system with parameters referring to Zhang, et al [6] is presented as an example on how to conduct the analysis. The finite-element model of both the ground-side and vehicle-side couplers are shown in Fig.…”

Section: Simulation Studies Of Temperature Impact On Shielding Perfor...mentioning

confidence: 99%

“…Wireless power transfer (WPT) is a noncontact, convenient electric vehicle (EV) charging technology [1][2][3][4]. Some electromagnetic (EM) shielding solutions have been developed for stationary and 200-kW dynamic wireless charging of lightduty electric vehicles (LDEVs) [5][6][7][8]. However, the embedded charging pads under and on the ground expose the charging coils and ferrite shielding to a potentially severe external cold or hot environment.…”

Section: Introductionmentioning

confidence: 99%

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Severe Temperature Impact Study on Ferrite Electromagnetic Shielding for Wireless Electric Vehicle Charging

Zhang

Yamauchi²,

Galigekere

et al. 2023

2023 IEEE Transportation Electrification Conference &Amp; Expo (ITEC)

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Wireless charging of an electric vehicle (EV) is an emerging technology that enables noncontact charging, which has advantages in terms of convenience and flexibility. However, the embedded charging pads under and on the ground expose the charging coils, ferrite shielding, and related components to a potentially severe external environment. To study the electromagnetic shielding performance under such extreme temperature conditions, ferrite shielding material's permeability characteristics are tested under temperatures as low as -50°C to as high as 240°C. Referring to the official recorded lowest and highest temperature of the United States, in this paper, it is assumed that the operation temperature ranges from -50°C to 57°C as the coldest winter and hottest summer environment for WPT application. Electromagnetic performance, shielding, and associated stray magnetic emissions are simulated by using threedimensional (3D) transient simulations to study the impact of low and high temperature on electromagnetic shielding performance. Based on ferrite testing data, from -50°C low temperature to 57°C high temperature, the ferrite's relative permeability ranges from 2550 to 3727. The simulation study indicates that there won't be significant impact on the EM shielding performance for WPT operated under those severe environment temperature conditions.

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Section: Simulation Studies Of Temperature Impact On Shielding Perfor...mentioning

confidence: 95%

Section: Permeability-temperature Characteristic Tests Of Ferrite Mat...mentioning

confidence: 99%

Section: Simulation Studies Of Temperature Impact On Shielding Perfor...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Severe Temperature Impact Study on Ferrite Electromagnetic Shielding for Wireless Electric Vehicle Charging

Zhang

Yamauchi²,

Galigekere

et al. 2023

2023 IEEE Transportation Electrification Conference &Amp; Expo (ITEC)

Self Cite

View full text Add to dashboard Cite

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“…Finally, experimental results clearly show how the efficiency is affected with iron sand, rainwater, and seawater and changes in resonance frequency of the DWPT system. WRIPT system is developed for a 20kW power rating for experimental verification of speed between (0 to 100 Km/h) with sequence order of sequential of EVs [169].…”

Section: In-motion Test For Dwpt Of Evsmentioning

confidence: 99%

An Empirical Survey on Wireless Inductive Power Pad and Resonant Magnetic Field Coupling for In-Motion EV Charging System

et al. 2023

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EVs are the recent emerging automotive technology in the transportation sector to reduce the CO2 emission from the internal combustion engine. The issues in EVs technology development are battery tube capacity, heavy-size batteries, fast charging, and safe charging infrastructure. The dynamic wireless charging technology shows a suitable alternative to address the charging system-related issues in EV. However, a limited number of review studies are conducted to specifically address the wireless charging pad design challenges. The wireless inductive power pad and magnetic coupling circuit design are the main factors to decide the performance of the DWPT system. This review analyzes the current developments and challenges associated with wireless charging pad design. Further, this study investigates the potential parameters which improve the performance of a DWPT system to increase the distance traveled (mileage). First, this paper discusses WRIPT technology for DWPT EV charging application, and several parameters affecting the PTE are examined. Also, the aids factors considered for designing the DWPT power pad and different magnetic resonance coupling topologies are presented. In addition, the performance evaluation of the WRIPT power pad, with in-motion testing from the major findings in earlier studies is discussed. Finally, the challenges and opportunities of the WRIPT power pad for in-motion EV charging applications are also addressed. The current state of the art of DWPT and its future directions to make DWPT EV charging systems a fullfledged method are highlighted.

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Quasi-Dynamic Electromagnetic Field Safety Analysis and Mitigation for High-Power Dynamic Wireless Charging of Electric Vehicles

Zhang

Carlson

Galigekere

et al. 2021

2021 IEEE Transportation Electrification Conference &Amp; Expo (ITEC)

View full text Add to dashboard Cite

Dynamic wireless charging of electric vehicles (EV) is an emerging charging technology to enable non-contact wireless charging while the vehicle is moving. Compared to stationary wireless charging, in-motion wireless charging involves dynamic processes in which an EV is passing over the charging pads (transmitters). This in-motion process makes the dynamic electromagnetic (EM) environment more complicated, and EM safety needs to be ensured under all circumstances. This is due to the fact that the entire vehicle body may be exposed to magnetic fields while the vehicle moves over the energized transmitter. This paper investigates several typical charging scenarios when EVs approach, pass over, and move away from the charging pads. Quasi-dynamic models, which are preliminarily verified by coils' inductance measurements, are developed to analyze the dynamic process. Based on the quasidynamic analysis, shielding solutions are also studied to ensure EM safety for the dynamic wireless charging processes.

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Quasi-Dynamic Electromagnetic Field Safety Analysis and Mitigation for High-Power Dynamic Wireless Charging of Electric Vehicles

Cited by 8 publications

References 21 publications

Severe Temperature Impact Study on Ferrite Electromagnetic Shielding for Wireless Electric Vehicle Charging

Severe Temperature Impact Study on Ferrite Electromagnetic Shielding for Wireless Electric Vehicle Charging

An Empirical Survey on Wireless Inductive Power Pad and Resonant Magnetic Field Coupling for In-Motion EV Charging System

Quasi-Dynamic Electromagnetic Field Safety Analysis and Mitigation for High-Power Dynamic Wireless Charging of Electric Vehicles

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