Journal ArticleDOI
Design considerations for a contactless electric vehicle battery charger
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This paper overviews theoretical and practical design issues related to inductive power transfer systems and verifies the developed theory using a practical electric vehicle battery charger.Abstract:
This paper overviews theoretical and practical design issues related to inductive power transfer systems and verifies the developed theory using a practical electric vehicle battery charger. The design focuses on the necessary approaches to ensure power transfer over the complete operating range of the system. As such, a new approach to the design of the primary resonant circuit is proposed, whereby deviations from design expectations due to phase or frequency shift are minimized. Of particular interest are systems that are neither loosely nor tightly coupled. The developed solution depends on the selected primary and secondary resonant topologies, the magnetic coupling coefficient, and the secondary quality factor.read more
Citations
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Journal ArticleDOI
Optimization of Magnetic Field Focusing and Null Steering for Selective Wireless Power Transfer
Haejoon Jung,Byunghun Lee +1 more
TL;DR: This article considers selective magnetic resonance coupling-based WPT, which enables WPT systems to better shape power distribution only focusing on the intended Rxs while leakages to the unintended Rx are suppressed, and proposed method to obtain the optimal Tx voltage vector for simultaneous MFF and null-steering optimization.
Journal ArticleDOI
An Overview of Dynamic Inductive Charging for Electric Vehicles
TL;DR: In this paper , an extensive review for inductive power transfer (IPT) systems in dynamic EV charging is presented, including the state-of-the-art of transmitter design, including magnetic structure and supply arrangement.
Journal ArticleDOI
Optimization of Circular Coil Design for Wireless Power Transfer System in Electric Vehicle Battery Charging Applications
TL;DR: In this paper, the influence of change in vertical offset between the coils and misalignment on the critical design parameters such as coupling, quality factor, and mutual inductance is investigated.
Journal ArticleDOI
Applying normally-off GaN HEMTs for coreless high-frequency wireless chargers
TL;DR: In this paper, two different types of normally-off GaN HEMTs were used to charge a battery pack on an electric scooter at 48 V/500W, with the air gap between the transceiver and receiver of ~10 cm.
Journal ArticleDOI
Practical Coupled Resonators in Domino Arrangements for Power Transmission and Distribution: Replacing Step-Down Power Transformers and Their Branches across the Power Grid
TL;DR: In this paper, the potential of replacing step-down power transformers of the entire power grid as well as part of their transmission line branches with wireless power transfer (WPT) technology components is investigated in terms of performance metrics such as power transfer efficiency and transformation ratio.
References
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Journal ArticleDOI
Stability and control of inductively coupled power transfer systems
TL;DR: In this paper, inductively coupled power transmission (ICPT) is used for transferring power from an extended loop (track) to a number of galvanically isolated movable pickup coils.
Journal ArticleDOI
A contactless electrical energy transmission system for portable-telephone battery chargers
Yungtaek Jang,Milan M. Jovanovic +1 more
TL;DR: The proposed technique enables the implementation of high-efficiency high-power-density fully regulated fully regulated CEET systems suitable for applications with a wide input and load range.
Journal ArticleDOI
An energy transmission system for an artificial heart using leakage inductance compensation of transcutaneous transformer
G.B. Joung,Bo-Hyung Cho +1 more
TL;DR: In this paper, a transcutaneous transformer to power an artificial heart through intact skin has been designed and built in order to realize both high-voltage gain and minimum circulating current.
Journal ArticleDOI
A noncontact charger using a resonant converter with parallel capacitor of the secondary coil
TL;DR: In this article, a noncontact charging system using a resonant converter is presented, where the power transfer ability of a detachable transformer is improved by using a parallel capacitor connected to the secondary coil.
Proceedings ArticleDOI
Design of loosely coupled inductive power transfer systems
O.H. Stielau,Grant A. Covic +1 more
TL;DR: In this paper, a design methodology for loosely coupled inductive power transfer systems is proposed, where the level of compensation, as well as possible compensation topologies, are discussed in the design process.