High-Performance Multi-MHz Capacitive Wireless Power Transfer System for EV Charging Utilizing Interleaved-Foil Coupled Inductors

Regensburger, Brandon; Sinha, Sitabhra; Kumar, Ashish; Maji, Sounak; Afridi, Khurram K.

doi:10.1109/jestpe.2020.3030757

Cited by 73 publications

(22 citation statements)

References 39 publications

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“…According to (18), the voltage stress between the coupling plates can be calculated as shown in (19), where U a_b represents the voltage stress between P a and P b .…”

Section: Compensation Networkmentioning

confidence: 99%

“…In summary, the upper limit of the proposed system load quantity (J + N) max mainly depends on the voltage stress between P 02 and P M . According to (18), (J + N) max can be calculated as…”

Section: Compensation Networkmentioning

confidence: 99%

“…Compared with IPT, the electric field-based CPT system is more suitable for railway systems, considering the low eddy current loss and strong plasticity of the coupler. 12,13 At present, the CPT system has been expanded to the fields of electric vehicle charging, [14][15][16][17][18][19] implantable medical, [20][21][22] consumer electronics, [23][24][25] and underwater device charging. [26][27][28] Usually, the research on the CPT system focuses on the single load system.…”

mentioning

confidence: 99%

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A multi‐loads capacitive power transfer system for railway intelligent monitoring systems based on single relay plate

Zhang

Luo

Cheng

et al. 2023

Circuit Theory & Apps

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SummaryThis paper proposes a multi‐loads capacitive power transfer (CPT) system based on a single relay plate for railway monitoring systems. The proposed system can supply power wirelessly to the monitoring system on the trackside and train carriages simultaneously to eliminate traditional power cables connection and prevent frequent battery replacement. Unlike the traditional multiple loads CPT systems, the proposed system uses only one relay plate, which is more stable and uncomplicated considering the coupler installation space and moving dynamically in the railway system. The proposed system adopts a CL‐LCLC‐CL compensation network to achieve a load‐independent output. The limitation of the charging load quantity is given in detail considering the coupler voltage stress distribution. An experimental prototype with three loads is also built to verify the effectiveness of the proposed system. Experimental results show that the proposed system achieves wireless power transfer to multiple loads simultaneously with two loads on the receiver and one on the repeater side. The load‐independent property is also achieved when two loads are removed. The maximum experimental efficiency is about 87.13%.

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“…According to (18), the voltage stress between the coupling plates can be calculated as shown in (19), where U a_b represents the voltage stress between P a and P b .…”

Section: Compensation Networkmentioning

confidence: 99%

Section: Compensation Networkmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

A multi‐loads capacitive power transfer system for railway intelligent monitoring systems based on single relay plate

Zhang

Luo

Cheng

et al. 2023

Circuit Theory & Apps

View full text Add to dashboard Cite

show abstract

“…Furthermore, multi-modular inverter structures [132,226,227] and mutual capacitance effect [33,71] are evaluated in CPT systems to increase the power level. Resonant inductances are also investigated in EV charging applications for CPT systems [222,228,229]. When the voltages on metal plates are increased to kV level, electric field emission rises that should otherwise be compatible with the standards.…”

Section: Static Chargingmentioning

confidence: 99%

A Comprehensive Review on Wireless Capacitive Power Transfer Technology: Fundamentals and Applications

et al. 2022

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Capacitive power transfer (CPT) technology is becoming increasingly popular in various application areas. Due to its limitations, such as low frequency, low coupling capacitance, and the high voltage stress on metal plates, the studies on high power CPT applications fell behind previously. Therefore, the wideband gap (WBG) semiconductor devices and the compensation topologies are further adopted to tackle these limitations. The main purpose of the paper is to review CPT applications in terms of performance parameters, advantages, disadvantages and also challenges. Initially, the basic principles of CPT technology are examined, which cover compensation topologies, coupler structures, transfer distance, power electronic components, and system control methods. Then, CPT applications are evaluated for performance parameters (i.e., power level, operation frequency, system efficiency, transfer distance) along with compensation types, inverter types, and coupler types. The applications are categorized into six main groups according to industrial topics as safety, consumer electronics, transport, electric machines, biomedical, and miscellaneous. Herein, power level changes from µW to kW ranges, the operation frequency varies from 100s of kHz to 10s of MHz ranges as well. The maximum system efficiency is recorded as 97.1 %. The transfer distance varies from µm range to 100s of mm ranges. The full-bridge inverter topology and four-plate coupler structure are noticeable in CPT applications. Finally, advantages, disadvantages, and challenges of CPT applications are evaluated in detail. This review is expected to serve as a reference for researchers who study on CPT systems and their applications.INDEX TERMS Capacitive power transfer, capacitive coupling, wireless power transfer.MEHMET ZAHID EREL was born in Sakarya, Turkey. He received the B.S. degree in electrical engineering from the Yildiz Technical University, Istanbul, Turkey, in 2013, and the M.S. degree in electronics and communication engineering from the Ankara Yildirim Beyazit University, Ankara, Turkey, in 2016. He is currently pursuing the Ph.D. degree with the department of electrical and electronics engineering,

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“…The capacitive wireless power transfer (CPT) system has been used as a wireless charging method for electrical vehicles, mobile devices, and so on [13][14][15][16][17][18][19]. It could act as an alternative near-field power transfer method to wellknown magnetic field-based approaches.…”

Section: Iintroductionmentioning

confidence: 99%

Comparison Survey of Effects of Hull on AUVs for Underwater Capacitive Wireless Power Transfer System and Underwater Inductive Wireless Power Transfer System

Yang¹,

Zhang²,

Li³

et al. 2022

IEEE Access

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Underwater wireless power transfer (UWPT) system has attracted widespread attention. It has been used for power delivery for underwater equipment in the marine environment with high safety and convenience. However, the material of metal plates and the shape which will affect the high frequency alternating electromagnetic fields and the high frequency alternating electric fields for the inductive wireless power transfer (IPT) system and the capacitive wireless power transfer (CPT) system. This paper presents the effects of the hull of the autonomous underwater vehicle (AUV) on the underwater wireless power transfer system including the underwater capacitive wireless power transfer (UCWPT) system and underwater inductive wireless power transfer (UIWPT) system. The features of underwater wireless power transfer systems have been carefully studied with simulation and experimental work. The experimental water tank has been constructed with the 35‰ salinity water. The hull of AUVs has been respectively simulated and built with rectangle metal plates and curved metal plates. The original experimental data and phenomenon have been presented in this paper. The different performance of the UCWPT system and UIWPT system is provided and discussed in this paper. The comparison work with the related paper has been analyzed. This paper could be acted as the reference for designing the underwater wireless power transfer system for AUVs.INDEX TERMS Underwater wireless power transfer (UWPT), capacitive, material, shape, autonomous underwater vehicles (AUVs)

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High-Performance Multi-MHz Capacitive Wireless Power Transfer System for EV Charging Utilizing Interleaved-Foil Coupled Inductors

Cited by 73 publications

References 39 publications

A multi‐loads capacitive power transfer system for railway intelligent monitoring systems based on single relay plate

A multi‐loads capacitive power transfer system for railway intelligent monitoring systems based on single relay plate

A Comprehensive Review on Wireless Capacitive Power Transfer Technology: Fundamentals and Applications

Comparison Survey of Effects of Hull on AUVs for Underwater Capacitive Wireless Power Transfer System and Underwater Inductive Wireless Power Transfer System

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