Design and Modeling of Ferrite Core Geometry for Inductive Wireless Chargers of Electric Vehicles

ElGhanam, Eiman; Kabalan, Hanin H.; Hassan, Mohamed S.; Osman, Ahmed

doi:10.1109/icecta48151.2019.8959703

Cited by 7 publications

(2 citation statements)

References 11 publications

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“…In addition, the ferrite link geometry needs to be selected to provide enhanced coupling performance at different lateral misalignments. The ferrite layer specifications in this work follow the authors' earlier work in [58,59] in which I-core ferrite bars with µ r = 3000 provide satisfactory coupling performance over a wide range of lateral misalignments. These were used for all FEM simulations reported hereafter.…”

Section: Ferrite Layermentioning

confidence: 89%

Design of a High Power, LCC-Compensated, Dynamic, Wireless Electric Vehicle Charging System with Improved Misalignment Tolerance

2021

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Dynamic wireless power transfer (DWPT) systems are becoming increasingly important for on-the-move electric vehicle (EV) charging solutions, to overcome range anxiety and compensate for the consumed energy while the EV is in motion. In this work, a DWPT EV charging system is proposed to be implemented on a straight road stretch such that it provides the moving EV with energy at a rate of 308 Wh/km. This rate is expected to compensate for the vehicle’s average energy consumption and allow for additional energy storage in the EV battery. The proposed charging system operates at an average power transfer efficiency that is higher than 90% and provides good lateral misalignment tolerance up to ±200 mm. Details of the proposed system’s design are presented in this paper, including EV specifications, inductive link and compensation network design and power electronic circuitry.

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Section: Ferrite Layermentioning

confidence: 89%

Design of a High Power, LCC-Compensated, Dynamic, Wireless Electric Vehicle Charging System with Improved Misalignment Tolerance

2021

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“…The main drawbacks of [23] are the requirement for a secondary control system and operation under a fixed frequency. In [24][25][26], the effects of a series/series-parallel compensation tank, ferrite core geometry and resonant frequency mismatch have been evaluated on the efficiency and output voltage of the DWPT system. The suggested converter in [27] has concentrated on solving the current imbalance problem of a WPT system with a high order resonant tank.…”

Section: Introductionmentioning

confidence: 99%

Improved Resonant Converter for Dynamic Wireless Power Transfer Employing a Floating-Frequency Switching Algorithm and an Optimized Coil Shape

Ghohfarokhi,

Tarzamni,

Tahami

et al. 2022

IEEE Access

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This paper offers a new EF-class converter for dynamic wireless power transfer application. The proposed high-frequency converter employs a floating-frequency switching algorithm to control the converter in a continuous frequency range, eliminate the requirement to any additional operational data from the secondary (receiver) side, accelerate the load impedance match while moving, maximize the transferred power rate, reduce charging interval and compensate power transfer tolerances. Moreover, an optimized super elliptical shape coil is designed to cope with lateral misalignment, enhance coil coupling, and increase efficiency. In the proposed converter, (i) soft switching is implemented to increase switching frequency, decrease passive components size, and improve power density, (ii) undesired voltage harmonics are attenuated to reduce peak voltage stress of the power switch in a wide frequency range, (iii) the receiver side is enabled for higher mobility with stable power transfer, and (iv) the resonant frequency is updated to compensate non-accurate values of passive components in experimental prototyping. In this study, the operational analytics, compensation method, control algorithm, coil design and converter optimization are followed with some comparisons to present the converter capabilities. In addition, simulation and experimental results are provided under different degrees of misalignment to verify the accuracy of theoretical analytics.INDEX TERMS EF-class resonant converter, floating-frequency switching algorithm, coil shape optimization, dynamic wireless power transfer.

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Modeling, Simulation, and Comparison of Different Ferrite Layer Geometries for Inductive Wireless Electric Vehicle Chargers

ElGhanam

Hassan

Osman

2020

Lecture Notes in Electrical Engineering

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Design and Modeling of Ferrite Core Geometry for Inductive Wireless Chargers of Electric Vehicles

Cited by 7 publications

References 11 publications

Design of a High Power, LCC-Compensated, Dynamic, Wireless Electric Vehicle Charging System with Improved Misalignment Tolerance

Design of a High Power, LCC-Compensated, Dynamic, Wireless Electric Vehicle Charging System with Improved Misalignment Tolerance

Improved Resonant Converter for Dynamic Wireless Power Transfer Employing a Floating-Frequency Switching Algorithm and an Optimized Coil Shape

Modeling, Simulation, and Comparison of Different Ferrite Layer Geometries for Inductive Wireless Electric Vehicle Chargers

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