High performance inductive power transfer system with narrow rail width for On-Line Electric Vehicles

A new inductive power transfer system (IPTS) with narrow rail width and large air-gap for electric vehicle (EV) is proposed in this paper. By a new core structure, the orientation of magnetic flux is alternating along with the road. Hence, the proposed IPTS with narrow rail width, 10 cm, and large a...

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Bibliographic Details
Published in2010 IEEE Energy Conversion Congress and Exposition pp. 647 - 651
Main Authors Jin Huh, Sungwoo Lee, Changbyung Park, Gyu-Hyeoung Cho, Chun-Taek Rim
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2010
Subjects
Air gaps
contactless power system
Inductive power transfer system
Inverters
Magnetic cores
Power generation
Power supplies
Rails
Roads
wireless power transfer
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Summary:A new inductive power transfer system (IPTS) with narrow rail width and large air-gap for electric vehicle (EV) is proposed in this paper. By a new core structure, the orientation of magnetic flux is alternating along with the road. Hence, the proposed IPTS with narrow rail width, 10 cm, and large air-gap, up to 20 cm, can be implemented for EV. The power supply inverter uses 440 V, 3phase input and supplies 20 kHz output current. To null the high voltages of power rail and pick-up and to transfer maximum power to vehicles, resonant capacitors are inserted to each side of the rail and the pick-up. The test results show that the maximum output power is 35 kW and the maximum efficiency is 74% at 27 kW output. The proposed IPTS is found to be adequate for EV which can freely drive on the road by picking up the power from the underground power supply rail.
ISBN:1424452864
9781424452866
ISSN:2329-3721
2329-3748
DOI:10.1109/ECCE.2010.5617948