Design and Analysis of EMI Shielding Method using Intermediate Coil for Train WPT System

Lee, Seongsoo; Jeong, Seungtaek; Hong, Seokwoo; Sim, Boogyo; Kim, Joungho

doi:10.1109/wpt.2018.8639326

Cited by 10 publications

(3 citation statements)

References 2 publications

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“…To compensate for this, relay coils must be added. As the air gap widens, more relay coils must be added in order to maintain high efficiency [5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Multi-coil wireless power transfer (WPT) technique for boosting efficiency in large air gap systems

Ghosh

2023

J. Phys.: Conf. Ser.

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An energy-efficient high-powermulti-coil wireless power transfer system (WPT) has been studied in this paper. The proposed system was first analyzed and examined using theoretical modeling; this was followed by finite element analysis and circuit simulation to confirm the goal. As the air gap between the transmitter and receiver coils widens, the coupling coefficient of a WPT system will drop. A large-air-gap WPT system’s coupling coefficient can be raised by adding relay coils between the transmitting and receiving coils. On the other hand, an increased coupling coefficient improves the system’s overall power transfer efficiency. The suggested multi-coil system, which has an air gap of 15 cm and a lateral misalignment of 3 cm between the transmitting and receiving coils, has been simulated and verified using the Maxwell 3-D finite element tool and Ansys Simplorer circuit simulation software.

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“…To compensate for this, relay coils must be added. As the air gap widens, more relay coils must be added in order to maintain high efficiency [5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Multi-coil wireless power transfer (WPT) technique for boosting efficiency in large air gap systems

Ghosh

2023

J. Phys.: Conf. Ser.

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“…Moreover, as the device size enters the nanometer scale and the bias voltage is reduced, the integrated circuits and systems become more vulnerable to EMI [6,7]. A low level of electromagnetic coupling from an external EMI source can still disrupt the operation of a circuit by causing soft, reversible upset, or hard, permanent damage, even when numerous techniques for reducing the effect of EMI are implemented, such as shielding and filtering of the digital modules and power supplies [8,9]. Although the modeling of the EMI susceptibility of digital circuits related to delay time and power supply current [10], or upset of CMOS inverters in static operation [11], is recently attracting attention, there is no model to predict the impact of EMI on the leakage current.…”

Section: Introductionmentioning

confidence: 99%

Application of High-Frequency Leakage Current Model for Characterizing Failure Modes in Digital Logic Gates

et al. 2021

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In this paper, a predictive model is developed to characterize the impact of high-frequency electromagnetic interference (EMI) on the leakage current of CMOS integrated circuits. It is shown that the frequency dependence can be easily described by a transfer function that depends only on a few dominant parasitic elements. The developed analytical model is successfully compared against measurement data from devices fabricated using 180 nm, 130 nm, and 65 nm standard CMOS processes through TSMC. Based on the predictive model, the impact of EMI on leakage current in a CMOS inverter is reduced by increasing the frequency from 10 MHz to 4 GHz.

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“…These loads are often powered by high energy density lithium batteries, which can only last for 20-40 min [9][10][11]. The lithium battery limits the length of UAV possible running length [12][13][14][15]. It is necessary for UAV continuously conduct inspections and detection under working condition [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Design of UAV wireless power transmission system based on coupling coil structure optimization

Yan

Shi

Zhang

2020

J Wireless Com Network

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With the development of unmanned aerial vehicle (UAV), it has been used in many fields, such as aerial photography, military, and transportation. However, it is a challenge for charging due to its short battery life. Wireless charging has been considered as a good UAV solution. In this paper, we proposed a wireless power transmission system (WPT) through inductive coupling and analyzed the power efficiency of the inductive coupling. The WPT included a charging station, which can provide energy through an induction coil array, and a portable energy receiving device mounted on the base of the UAV. Moreover, the power efficiency was analyzed though the equivalent circuit of WPT and the mathematical model of the power efficiency was established. The results showed that the WPT can transfer energy to UAV with high power efficiency within a 30 mm lateral displacement range.

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Design and Analysis of EMI Shielding Method using Intermediate Coil for Train WPT System

Cited by 10 publications

References 2 publications

Multi-coil wireless power transfer (WPT) technique for boosting efficiency in large air gap systems

Multi-coil wireless power transfer (WPT) technique for boosting efficiency in large air gap systems

Application of High-Frequency Leakage Current Model for Characterizing Failure Modes in Digital Logic Gates

Design of UAV wireless power transmission system based on coupling coil structure optimization

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