Electromagnetic shielding design for magnetic coupler of N-type dynamic electric vehicle wireless power transfer systems

Wang, Songcen; Wei, Bin; Wu, Xiaokang; Cai, Xu; Xu, Jinliang; Ge, Weimei; Xu, Jiaqi

doi:10.1109/icems.2019.8921656

Cited by 12 publications

(6 citation statements)

References 5 publications

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“…Regarding this category of screens, several studies have been conducted [68][69][70][71][72][73][74]. Table 1 compares the most recent work on this screen type for the WPT system.…”

Section: ) Loopmentioning

confidence: 99%

“…The proposed methods offer a comprehensive approach to reducing EMF in IPTSs for WEVs, ensuring the safety of pedestrians while maintaining efficient power transfer. W.Songcen et al [69] The paper focused on developing an electromagnetic shielding design for the magnetic coupler of an N-type dynamic EV WPT (WPT) system. The N-type dynamic WPT system is a wireless charging system used to charge the batteries of EVs while they are in motion.…”

Section: Referencementioning

confidence: 99%

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Recent Results in Shielding Technologies for Wireless Electric Vehicle Charging Systems

Quercio,

Lozito,

Corti

et al. 2024

IEEE Access

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Electromagnetic compatibility (EMC) is crucial when designing and operating wireless power transfer (WPT) systems for charging Electric Vehicles (EVs). WPT technology allows the transmission of electrical energy from a power source to a device without requiring physical contact. However, it can generate electromagnetic interference (EMI) that could disturb nearby electronic devices or harm people nearby. Shielding techniques are commonly employed to mitigate EMI in WPT systems. However, implementing effective shielding techniques can be complex, involving trade-offs between effectiveness, cost, and shielding weight. In this article, different types of existing shielding techniques for wireless charging systems of EVs are compared. The main concepts regarding the functioning of electromagnetic shields and the theory of the functioning of WPT systems have been also briefly introduced.

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“…Regarding this category of screens, several studies have been conducted [68][69][70][71][72][73][74]. Table 1 compares the most recent work on this screen type for the WPT system.…”

Section: ) Loopmentioning

confidence: 99%

Section: Referencementioning

confidence: 99%

Recent Results in Shielding Technologies for Wireless Electric Vehicle Charging Systems

Quercio,

Lozito,

Corti

et al. 2024

IEEE Access

View full text Add to dashboard Cite

show abstract

“…In the active shielding method, an addition coil is placed on the receiver coil in which current flows in the opposite direction, cancelling out the incident EM waves. In the passive shielding technique, an aluminium sheet is placed between the coil and the circuit to be protected, isolating the electronic components from the EM waves from the transmitter [156]. The addition of ferrite bars provides more stability to the system, as ferrite core-based structures have Thus, the ferrite materials divert the incident magnetic flux waves and flow through these magnetic materials with low reluctance path than air.…”

Section: Electromagnetic Shieldingmentioning

confidence: 99%

A Review on UAV Wireless Charging: Fundamentals, Applications, Charging Techniques and Standards

2021

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Unmanned Aerial Vehicles (UAVs) are becoming increasingly popular for applications such as inspections, delivery, agriculture, surveillance, and many more. It is estimated that, by 2040, UAVs/drones will become a mainstream delivery channel to satisfy the growing demand for parcel delivery. Though the UAVs are gaining interest in civil applications, the future of UAV charging is facing a set of vital concerns and open research challenges. Considering the case of parcel delivery, handling countless drones and their charging will become complex and laborious. The need for non-contact based multi-device charging techniques will be crucial in saving time and human resources. To efficiently address this issue, Wireless Power Transmission (WPT) for UAVs is a promising technology for multi-drone charging and autonomous handling of multiple devices. In the literature of the past five years, limited surveys were conducted for wireless UAV charging. Moreover, vital problems such as coil weight constraints, comparison between existing charging techniques, shielding methods and many other key issues are not addressed. This motivates the author in conducting this review for addressing the crucial aspects of wireless UAV charging. Furthermore, this review provides a comprehensive comparative study on wireless charging's technical aspects conducted by prominent research laboratories, universities, and industries. The paper also discusses UAVs' history, UAVs structure, categories of UAVs, mathematical formulation of coil and WPT standards for safer operation.

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“…[6][7][8][9][10][11][12][13][14][15] However, the transmitting coil and the pickup coil are physically separated, presenting a loosely coupled structure, [16] which leads to a certain degree of magnetic leakage, reduces the efficiency of energy transmission and leads to larger electromagnetic radiation. [17][18][19][20] Therefore, most of the existing research has been conducted to reduce the distribution of magnetic lines of force in the spatial medium by improving the structural layout of the core, so that as many magnetic lines of force as possible flow with the core to form a closed loop, which is used to attenuate the intensity of electromagnetic radiation in the air [21][22][23][24][25] and to increase the energy transfer power and efficiency. [26] In this regard, there are some classical core-coupled structures such as E-type, [27][28][29][30][31][32] U-type [33][34][35] and l-type.…”

Section: Introductionmentioning

confidence: 99%

Design and Performance Analysis of New Coupling Magnetic Core Structure for Dynamic Wireless Charging System of Electric Vehicle

Yin,

Zhou,

2023

Energy Tech

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Aiming at the problems of high cost, low efficiency, low power, and high electromagnetic radiation in the dynamic wireless charging system for electric vehicles (EVs), the cover‐like coupling structure and the return‐like coupling structure are designed, and the unique concave structure has excellent engineering practicability. Using Ansoft software for simulation and analysis, the newly proposed two coupling structures have significantly improved the induced voltage and electromagnetic induction strength at the pickup end compared with other commonly used coupling core structures. According to the advantages of practical applications, the application of its composite core structure for simulation and analysis proves that the cover‐like structure of the magnetic field strength at the pickup end not only enhances the magnetic field strength on the coil but also has a good magnetic field shielding effect. The lateral displacement of the EV is kept within the range of 10 cm, the coupling distance is 0–5 cm, the charging is stable, and the transmission efficiency is high. Finally, a dynamic wireless charging experimental platform for small EVs is constructed, which verifies that the new coupling core structure can significantly improve the transmission power and efficiency of the charging system and significantly reduce the economic cost.

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Electromagnetic shielding design for magnetic coupler of N-type dynamic electric vehicle wireless power transfer systems

Cited by 12 publications

References 5 publications

Recent Results in Shielding Technologies for Wireless Electric Vehicle Charging Systems

Recent Results in Shielding Technologies for Wireless Electric Vehicle Charging Systems

A Review on UAV Wireless Charging: Fundamentals, Applications, Charging Techniques and Standards

Design and Performance Analysis of New Coupling Magnetic Core Structure for Dynamic Wireless Charging System of Electric Vehicle

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