Coil Design for High Misalignment Tolerant Inductive Power Transfer System for EV Charging

Kalwar, Kafeel Ahmed; Mekhilef, Saad; Seyedmahmoudian, Mehdi; Horan, Ben

doi:10.3390/en9110937

Cited by 57 publications

(50 citation statements)

References 38 publications

(47 reference statements)

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“…Source compensation is used to reduce the reactive power on the transmitter side [11,14], and receiver compensation is used to maximize the power transfer and efficiency. The features of the compensation networks are listed in Table 1 [15,16]. From Table 1, we can see that the primary capacitance of the SS topology has a constant value, regardless of the coupling coefficient and load conditions.…”

Section: Ipt System Using Ss Topologymentioning

confidence: 99%

A Double Helix Flux Pipe-Based Inductive Link for Wireless Charging of Electric Vehicles

Hwang

Kim

2020

WEVJ

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This paper presents a novel inductive link for wireless power transfer (WPT) system of electric vehicles (EVs). The WPT technology uses an alternating magnetic field to transfer electric power through space. The use of the WPT technology for charging electric vehicle provides an excellent alternative to the existing plug-in charging technology. It has been reported that the inductive link using planar coils such as the circular and rectangular coil are capable of transferring a high power with high efficiency. However, they have a poor tolerance for lateral misalignment, thus their power transfer efficiency decreases significantly with the misalignment. Due to the poor misalignment performance of the planar coil topology, extensive studies have been carried out on the flux pipe topology due to their excellent misalignment tolerance. To address this, in this paper, a novel inductive link using double helix flux pipe topology is proposed. The performances of the inductive link using the proposed double helix flux pipe are analyzed and compared with inductive links using conventional flux pipe. The proposed model has excellent characteristics in terms of the power transfer efficiency and tolerance against misalignments. The proposed model is capable of transferring over 1.6 kW of power with a coil-to-coil efficiency of over 98.5% at a load resistance of 20 Ω.

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Section: Ipt System Using Ss Topologymentioning

confidence: 99%

A Double Helix Flux Pipe-Based Inductive Link for Wireless Charging of Electric Vehicles

Hwang

Kim

2020

WEVJ

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“…Through AC/DC and DC/AC converters, the AC mains from the grid is converted into high frequency AC to qualify power transfer from the transmission coil to the receiving coil. For to ameliorate total system efficiency, series and parallel amalgamations-based compensation topology are connected on both the transmitting and receiving sides [6][7]. The oscillating magnetic flux fields are converted into high frequency AC through the receiving coil which is mounted underneath the vehicle.…”

Section: Wireless Charging System For Electric Vehicles 21 Basic Primentioning

confidence: 99%

“…They have been introduced so as to improve the overall performance which involves flux height and misalignment. Comparatively, quad D quadrature provides large value of coupling coefficient (0.35 at 150 mm air-gap)[7].…”

mentioning

confidence: 99%

Charging System Analysis in Static and Dynamic Wireless Electric Vehicle

Bhatnagar¹,

Parihar²,

Nathiya³

et al. 2019

IJARET

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Depletion in rising fuel prices and greenhouse gas emissions can be aided by electrified transportation. This evolution urges an installation of diversified charging networks, in an adaptable environment, to be successful. Wireless electric vehicle charging systems (WEVCS) can be a probable substitute technology to charge the EVs without any plug-in complications. In this paper, the present-day available wireless power transmit technology for electric vehicle is examined. And explanation of two prime applications of WEVCs and record of their progress with up-to-date features from universities, research laboratories are examined and presented. Moreover, the futuristic WEVCS; in-wheel and vehicle-to-grid WCS are compared with the existing ones.

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“…In addition, the source coil used in DWC systems is typically installed in segments to maximize efficiency, as described in [12,26]. Thus, it can be expected that the voltages generated in each segment will not be entirely identical.…”

Section: Acas Fuzzy Steering Controllermentioning

confidence: 99%

“…Some proposed methods include changing the geometry of the coil [9], placing multiple coils in an orthogonal configuration [10] or an overlapping configuration [11], and even combining multiple coils of different geometry into one unit [12]. Another popular method is the utilization of ferromagnetic materials, where E-shape or U-shape ferrite cores [13,14] are utilized at the load/source coils.…”

Section: Introductionmentioning

confidence: 99%

An Autonomous Coil Alignment System for the Dynamic Wireless Charging of Electric Vehicles to Minimize Lateral Misalignment

et al. 2017

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This paper proposes an autonomous coil alignment system (ACAS) for electric vehicles (EVs) with dynamic wireless charging (DWC) to mitigate the reduction in received power caused by lateral misalignment between the source and load coils. The key component of the ACAS is a novel sensor coil design, which can detect the load coil's left or right position relative to the source coil by observing the change in voltage phase. This allows the lateral misalignment to be estimated through the wireless power transfer (WPT) system alone, which is a novel tracking method for vehicular applications. Once misalignment is detected, the vehicle's lateral position is self-adjusted by an autonomous steering function. The feasibility of the overall operation of the ACAS was verified through simulation and experiments. In addition, an analysis based on experimental results was conducted, demonstrating that 26% more energy can be transferred during DWC with the ACAS, just by keeping the vehicle's load coil aligned with the source coil.

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Coil Design for High Misalignment Tolerant Inductive Power Transfer System for EV Charging

Cited by 57 publications

References 38 publications

A Double Helix Flux Pipe-Based Inductive Link for Wireless Charging of Electric Vehicles

A Double Helix Flux Pipe-Based Inductive Link for Wireless Charging of Electric Vehicles

Charging System Analysis in Static and Dynamic Wireless Electric Vehicle

An Autonomous Coil Alignment System for the Dynamic Wireless Charging of Electric Vehicles to Minimize Lateral Misalignment

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