Magnetic design considerations of bidirectional inductive wireless power transfer system for EV applications

Mohamed, Ahmed; Berzoy, Alberto; Mohammad, Osama A.

doi:10.1109/cefc.2016.7816426

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…In lower air gaps, the ability of this pad to transfer more power in larger misalignments is significantly higher than larger air gaps. If S u of 125 VA and k of 0.14 are considered as base power and coupling coefficient according to Equations (17) and (19) by consideration of Q s of 4, TQP is able to transfer the desired power up to �185 mm, �170 mm and �150 mm in the Y direction and up to �165 mm, �150 mm and �85 mm in the X direction for 150, 175 and 200 mm air gaps respectively.…”

Section: Resultsmentioning

confidence: 99%

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Investigation of triple quadrature pad for wireless power transfer system of electric vehicles

Jamakani

Mosallanejad

Afjei

et al. 2021

IET Electrical Syst in Trans

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Inductive Power Transfer (IPT) system is an appealing approach among researchers as well as industrial manufacturers of electric vehicle (EV) charging systems. IPT can be used to transfer power through the air gap by generating a high-frequency current in the transmitter pad and inducing current magnetically in the receiver pad. A triple quadrature pad (TQP) has been proposed to enhance transferred power in larger misalignments and various air gaps. This pad excels in its previous three-coil structures by implementing a fewer number of inverters and lower dimensions compared to other similar structures. All these features result in a higher coupling coefficient in low misalignments and higher tolerance to misalignment in horizontal displacements. A laboratory-scale prototype has been designed and built for 26 kHz switching frequency and 150 mm air gap in order to deliver maximum power in different displacements. Simulations have been done by the finite element analysis (FEA) tool of ANSYS Maxwell. The prototype has been built to validate the simulation results. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Resultsmentioning

confidence: 99%

“…Various compensation circuits have been utilised such as LC series, LC parallel, LCL, LCC and LCCL in Ref. [12][13][14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Investigation of triple quadrature pad for wireless power transfer system of electric vehicles

Jamakani

Mosallanejad

Afjei

et al. 2021

IET Electrical Syst in Trans

View full text Add to dashboard Cite

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“…As a result, the coupling coefficient is higher in the polarized coils and is also more robust to misalignment in the horizontal direction [1], which makes the coils more appropriate for their application in electric vehicle charging in both SWC and DWC methods. Among polarized coils, the double-D (DD) design is preferred due to its simple structure, high efficiency, and low sensitivity in misalignment conditions [5]. To optimize a WPT system or estimate its operating parameters (such as received power, efficiency, and gain), the designer should accurately compute the self-and mutual inductances [6].…”

Section: Introductionmentioning

confidence: 99%

Analytical Modeling of Self- and Mutual Inductances of DD Coils in Wireless Power Transfer Applications

Alkasir

Abdollahi

et al. 2022

J Electromagn Eng Sci

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Self- and mutual inductances are major design parameters for wireless power transfer (WPT) systems. To optimize a WPT system and estimate its performance in terms of received power and efficiency, it is essential to obtain a simple, fast, and accurate calculation of these two parameters. The polarized double-D (DD) coils were selected due to their simplicity of structure, high efficiency, and low sensitivity to misalignment conditions. This paper presents analytical calculations of self- and mutual inductance using the Biot-Savart law for DD coils. The results of the analytical calculations of mutual inductance in different distances between coils were investigated, and the results of the calculations were verified using experimental and finite element method (FEM) simulation results. This paper also presents analytical and FEM-based optimization guidelines for the coupling coefficient of the transmitter coil.

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An Adaptive Control Strategy for Underwater Wireless Charging System Output Power with an Arc-Shaped Magnetic Core Structure

Xia

Zhang

Zhu

et al. 2023

JMSE

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Aiming at the problem of unstable output power of wireless charging systems for autonomous underwater vehicles (AUVs), a magnetic coupler (MC) with an arc-shaped core structure is introduced and an output power stabilization control strategy based on mutual inductance identification algorithm is proposed. Firstly, an arc-shaped MC with high tolerances, excellent magnetic coupling and weak electromagnetic interference (EMI) is designed for the cylinder-shaped AUV. Based on ANSYS Maxwell simulation, an analysis of the magnetic field and comparative misalignment tests are carried out for the arc-shaped and the double dipole core structures. Secondly, a mathematical model of the LCC-S type magnetically coupled resonant wireless power transfer (MCR-WPT) system is developed, and a particle swarm parameter identification algorithm with adaptive inertia weights is proposed. Finally, the output power is steadily controlled by real-time adaptation of the duty cycle for the Buck-Boost circuit. The results show there is a maximum error within 2.5% in mutual inductance identification when the load is changed from 0 Ω to 12 Ω and the mutual inductance is changed from 25 μH to 50 μH. The system output power is steady at around 680 W with a maximum fluctuation rate of 4.90%, which verifies the efficiency of the power stabilization control strategy.

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Magnetic design considerations of bidirectional inductive wireless power transfer system for EV applications

Cited by 3 publications

References 2 publications

Investigation of triple quadrature pad for wireless power transfer system of electric vehicles

Investigation of triple quadrature pad for wireless power transfer system of electric vehicles

Analytical Modeling of Self- and Mutual Inductances of DD Coils in Wireless Power Transfer Applications

An Adaptive Control Strategy for Underwater Wireless Charging System Output Power with an Arc-Shaped Magnetic Core Structure

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