Journal Article10.1109/TPEL.2011.2143730
Design and Optimization of Circular Magnetic Structures for Lumped Inductive Power Transfer Systems
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TL;DR: In this article, 3-D finite-element analysis modeling is used to optimize circular power pads for electric vehicles to transfer 2-5 kW with a large air gap and have good tolerance to misalignment.
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Abstract: A solution that enables safe, efficient, and convenient overnight recharging of electric vehicles is needed. Inductive power transfer (IPT) is capable of meeting these needs, however, the main limiting factor is the performance of the magnetic structures (termed power pads) that help transfer power efficiently. These should transfer 2-5 kW with a large air gap and have good tolerance to misalignment. Durability, low weight, and cost efficiency are also critical. 3-D finite-element analysis modeling is used to optimize circular power pads. This technique is viable, since measured and simulated results differ by 10% at most. A sample of power pads was considered in this work, and key design parameters were investigated to determine their influence on coupled power and operation. A final 2 kW 700-mm-diameter pad was constructed and tested having a horizontal radial tolerance of 130 mm (equivalent to a circular charging zone of diameter 260 mm) with a 200 mm air gap. The leakage magnetic flux of a charging system was investigated via simulation and measurement. The proposed pads meet human exposure regulations with measurement techniques specific by the Australian Radiation Protection and Nuclear Safety Agency (ARPANSA) which uses the International Commission on Non-Ionizing Radiation Protection (ICNIRP) guidelines as a foundation.
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Citations
Existing Coil Topologies for Inductive Power Transfer in EV Charging: A Review
16 Mar 2022
TL;DR: In this article , a review of nine magnetic pads such as: Circular (CP), Solenoid (SP), Double-D (DDP), Double D Circular(DDC), DoubleD Quadrature (DDQP), Quad-D QuadRature (QDQ), Bipolar (BP), Tripolar (TPP) and Triple Quadratures (TQP) is presented.
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Integrated receiver with high misalignment tolerance used in dynamic wireless charging
TL;DR: An integrated two-layer receiver is presented to improve the tolerance of horizontal misalignment and the optimisation model based on the Bayesian algorithm is established for the proposed receiver structure and some key parameters are optimised.
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Effects of Intermediate Coil Position in a Triple-Coil Series-Series Compensation in Wireless Power Transfer
Nattapong Hatchavanich,Anawach Sangswang,Mongkol Konghirun +2 more
- 01 May 2019
TL;DR: The COMSOL finite element simulation software is used to analyze the magnetic flux density of the proposed system compared with the conventional SS compensation, and the optimal conditions for intermediate coil are validated by the simulated frequency responses.
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Design considerations to obtain a high figure of merit in circular archimedean spiral coils for EV battery charging applications
Kunwar Aditya,Mohamed Z. Youssef,Sheldon S. Williamson +2 more
- 01 Nov 2015
TL;DR: A comprehensive analysis of Archimedean spiral coil structure has been presented, with the aim of establishing key design parameters, leading to high FOM, and will lead to efficient IPT coil design methodologies.
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Flexible automation for the production of contactless power transfer systems for electric vehicles
Florian Risch,Stefan Guenther,Benjamin Bickel,Joerg Franke +3 more
- 23 Dec 2013
TL;DR: In this article, the authors present flexible automation concepts for the winding process of the HF-litz wire coil structures, which shows potential for further rationalization and can be used for high volume production concepts for contactless power transfer systems.
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References
•Journal Article
Guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields (up to 300 GHz)
TL;DR: The International Commission on Non-Ionizing Radiation Protection (ICNIRP)—was established as a successor to the IRPA/INIRC, which developed a number of health criteria documents on NIR as part of WHO’s Environmental Health Criteria Programme, sponsored by the United Nations Environment Programme (UNEP).
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Design considerations for a contactless electric vehicle battery charger
TL;DR: 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.
1.6K
Magnetic Resonant Coupling As a Potential Means for Wireless Power Transfer to Multiple Small Receivers
TL;DR: In this paper, the magnetic resonance coupling between source and load coils is achieved with lumped capacitors terminating the coils, and a circuit model is developed to describe the system with a single receiver and extended to describe two receivers.
Stability and control of inductively coupled power transfer systems
John T. Boys,Grant A. Covic,A.W. Green +2 more
- 01 Jan 2000
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.
609
A new generation of universal contactless battery charging platform for portable consumer electronic equipment
Shu Yuen Ron Hui,W.W.C. Ho +1 more
- 20 Jun 2004
TL;DR: In this paper, a planar inductive battery charger for portable electronic equipment such as mobile phones, palm pilots and CD players is proposed, which can generate magnetic flux of almost even magnitude over the surface of the winding arrays.
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