Design and implementation of removable and closed-shape dual ring pickup for contactless linear inductive power track system

Lee, Jia-You; Shen, Hung-Yu; Chan, Kai-Chuan

doi:10.1109/ecce.2013.6646982

Cited by 8 publications

(5 citation statements)

References 11 publications

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“…Although the S‐pickup can increase the coupling coefficient, this coupling structure does not form a closed magnetic field and makes the magnetic leakage serious. The CIC‐shaped core was proposed to form a closed magnetic field and reduce the magnetic flux leakage . The highest transfer efficiency and the maximum output of the proposed system were measured as 69% and 1.5 kW, respectively.…”

Section: Wpt For Urban Tramsmentioning

confidence: 99%

Review and research progress of wireless power transfer for railway transportation

Wang

2018

IEEJ Transactions Elec Engng

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This paper discusses the history and research progress of wireless power transfer (WPT) for railway transportation. In the field of railway transportation traction power supply, the problems caused by the traditional contact‐type power supply method have become increasingly prominent: the overhead contact network prone to breakages, scraping and wearing the pantograph, etc. WPT technology, which avoids direct contact with the power supply sources and loads, effectively solves these problems. This paper focuses on the application of WPT technology for railway transit, and introduces the research status in China and abroad. Moreover, the main technologies and primary problems of WPT, including magnetic coupler, segmented power supply, design of high‐frequency inverter, system optimization and control and practical applications for trams, maglev vehicles, and high‐speed trains, are reviewed. A detailed analysis and summary on the technologies is also provided. By reviewing the state‐of‐the‐art development of WPT in railways, it is hoped that researchers could be encouraged by these achievements and pushed forward the further development in WPT. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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Section: Wpt For Urban Tramsmentioning

confidence: 99%

Review and research progress of wireless power transfer for railway transportation

Wang

2018

IEEJ Transactions Elec Engng

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“…Significant activity is devoted to minimize performance degradation of inductive wireless power transfer (WPT) systems when variable coils distance and/or misalignment are unavoidable [1], such as for moving objects [2,3] or implantable devices powering. However the conditions a WPT system with sliding coils has to fulfil, in order to maintain constant performance on the move, are still not completely assessed.…”

Section: Introductionmentioning

confidence: 99%

“…Conceptually, movers are similar to moving vehicles models [2,3], or to sliding loads in [4]. Usually, to solve the problem of variable couplings, long primary current loops are adopted, which unavoidably introduce large primary leakage inductances, and consequently a significant drop of the overall power transfer efficiency [5].…”

Section: Introductionmentioning

confidence: 99%

Geometry optimization of sliding inductive links for position-independent wireless power transfer

Pacini

Mastri

Trevisan

et al. 2016

2016 IEEE MTT-S International Microwave Symposium (IMS)

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In this paper we describe a geometry design solution to minimize performance variations of a wireless power transfer system "on the move" (WPT-Mob). A sequence of switchable couples of coils, connected in series or in parallel, is adopted at the fixed transmitting link side; the geometry of the moving receiver is optimized to keep the coupling factor, and thus the power transfer, constant during the movement. First the analytical formulation of the link coupling factor is derived as a function of its circuit-equivalent parameters computed by fullwave simulation. Then selected geometry parameters of the receiver side are optimized to keep the coupling factor constant while the link is moving. A set of TX-RX arrangements are simultaneously analysed to emulate the sliding movement of the WPT-Mob. The final optimized geometry demonstrates that a constant power transfer on-the-move is enabled, even for variable TX-to-RX link distances. Design and experimental verification are carried out for a geometry suitable for medium power transfer (tens of Watts) at 6.78 MHz, but the method is formulated in such a way that the system can be scaled up and down to accomplish different application needs.

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“…The inductive power transfer (IPT) technique is a methodology demonstrating high safety and high overall convenience for supplying power to such commercial electric devices, home appliances, and EVs [1][2][3][4][5][6]. Many IPT track systems, both monorail-based [7][8][9] and free-run [10][11][12], have been developed, but are often constructed in a single phase. A single-phase current carrying track having one or multiple single-phase power pickups installed on moving EVs is employed as primary and secondary inductive coupled structures in IPT systems.…”

Section: Introductionmentioning

confidence: 99%

Design and implementation of contactless power track system with Y‐shaped inductive pickup

Lee¹,

Shen

Chang³

2016

IET Power Electronics

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This study investigated an inductive power transfer technique to construct a new inductive pickup for contactless power track systems. Several three-phase symmetrical shapes of the core material were simulated for the inductive pickup. The process to design the proposed pickup including a development of the core shape is discussed in this study. A feature of the proposed pickup is its three-phase symmetrical shape, which enables sharing the flux path and achieving low reluctance. To evaluate the coupling ability of the proposed pickup, a magnetic equivalent circuit with air gap was established. The finite element method and experiments on the contactless power track prototype were analysed to validate the proposed inductive pickup and its magnetic equivalent circuit. A complete Y-shaped inductive pickup was implemented and tested on a 1.2 kW laboratory-scale prototype. Fundamental experiments were carried out, and the overall system efficiency and pickup performance were subsequently demonstrated to verify the feasibility and capability of the proposed contactless power track system.

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Design and implementation of removable and closed-shape dual ring pickup for contactless linear inductive power track system

Cited by 8 publications

References 11 publications

Review and research progress of wireless power transfer for railway transportation

Review and research progress of wireless power transfer for railway transportation

Geometry optimization of sliding inductive links for position-independent wireless power transfer

Design and implementation of contactless power track system with Y‐shaped inductive pickup

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