Resonant Contactless Energy Transfer With Improved Efficiency

Valtchev, Stanimir; Borges, Beatriz; Brandisky, Kostadin; Klaassens, J.B.

doi:10.1109/tpel.2008.2003188

Cited by 137 publications

(73 citation statements)

References 9 publications

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“…The aluminum ring and backing plate shield the chassis of the EV and surrounding area from stray magnetic fields [7]. Alternative power couplers are; pot cores [8], U-shaped cores [9], ferrite discs or plates [10][11] or E-cores [12]. All of these are comparatively fragile and expensive due to the geometry of the large pieces of ferrite required to achieve the desired power transfer flux path.…”

Section: Single Phase Charging Padsmentioning

confidence: 99%

Electric Vehicles – Personal transportation for the future

Covic

Boys

Budhia

et al. 2010

WEVJ

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Plug-in EVs are being heralded as a step towards acceptance of pure EV's. However concerns remain regarding uptake by consumers, in terms of range anxiety and economic operation. These concerns are mitigated if energy can be transferred to the vehicle while it is moving, but there are implications in terms of the highway infrastructure required without restricting a vehicle's freedom to move while providing power over air-gaps in excess of 200mm. Such flexibility brings with it problems that are not normally inherent in stationary systems where electronic alignment may be employed to control magnetic coupling.The system must cope with variances as seen by both the power supply and the EV, while ensuring that the power receiver is compatible with both stationary and roadway systems. This paper discusses recent developments in wireless charging infrastructure for EV's and describes systems that may be suitable in future. As vehicles operate on the Grid they will constitute a substantial load that must be managed. A solution is presented here at little infrastructural cost such that the Grid, 'on load' has better power quality than 'off-load'.

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Section: Single Phase Charging Padsmentioning

confidence: 99%

Electric Vehicles – Personal transportation for the future

Covic

Boys

Budhia

et al. 2010

WEVJ

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“…Traditional energy transmission uses carbon brush and other physical contact approaches, these exist some shortcomings such as low speed, heating serious, wearing too fast , easy to produce EDM and so on [1][2][3]. In response to these problems, many scholars have proposed non-contact power supply technology.…”

Section: Introductionmentioning

confidence: 99%

The Transfer efficiency analysis and modeling technology of new non - contact power transmission equipment

Zhang

Wang

2017

MATEC Web Conf.

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Abstract. Due to the shortcomings of current power transmission which is used in ultrasoundassisted machining and the different transfer efficiency caused by the related parameters of the electromagnetic converter, this paper proposes an analysis model of the new non-contact power transmission device with more stable output and higher transmission efficiency. Then By utilizing Maxwell finite element analysis software, this paper studies the law of the transfer efficiency of the new non-contact transformer and compares new type with traditional type with the method of setting the boundary conditions of non-contact power supply device. At last, combining with the practical application, the relevant requirements which have a certain reference value in the application are put forward in the actual processing.

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“…In an IPT system, the magnetic structure is usually designed as two pads. The very early designs of pads usually used U-shape cores [18], ferrite plates [19], [20], pot cores [21], or E-cores [22]. These designs need large-sized ferrite cores to form a magnetic flux path, and they could only transfer power through a very small gap.…”

Section: Introductionmentioning

confidence: 99%

“…These designs need large-sized ferrite cores to form a magnetic flux path, and they could only transfer power through a very small gap. The designs using pot cores, U-shape cores or E-cores are necessarily thick, which is a problem when it comes to chasis requirements [5], [17], [18], [21], [22]. In order to solve this problem, some new magnetic structures have been presented in [1], [2], [9]- [12], [23], [24].…”

Section: Introductionmentioning

confidence: 99%

Investigation of a SP/S Resonant Compensation Network Based IPT System with Optimized Circular Pads for Electric Vehicles

Ma¹,

Ge²,

Guo³

et al. 2016

Journal of Power Electronics

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Inductive power transfer (IPT) systems have become increasingly popular in recharging electric vehicle (EV) batteries. This paper presents an investigation of a series parallel/series (SP/S) resonant compensation network based IPT system for EVs with further optimized circular pads (CPs). After the further optimization, the magnetic coupling coefficient and power transfer capacity of the CPs are significantly improved. In this system, based on a series compensation network on the secondary side, the constant output voltage, utilizing a simple yet effective control method (fixed-frequency control), is realized for the receiving terminal at a settled relative position under different load conditions. In addition, with a SP compensation network on the primary side, zero voltage switching (ZVS) of the inverter is universally achieved. Simulations and experiments have been implemented to validate the favorable applicability of the modified optimization of CPs and the proposed SP/S IPT system.

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Resonant Contactless Energy Transfer With Improved Efficiency

Cited by 137 publications

References 9 publications

Electric Vehicles – Personal transportation for the future

Electric Vehicles – Personal transportation for the future

The Transfer efficiency analysis and modeling technology of new non - contact power transmission equipment

Investigation of a SP/S Resonant Compensation Network Based IPT System with Optimized Circular Pads for Electric Vehicles

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