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Advances in Inductively Coupled Power transfer Technology for Rail Transit

CES Transactions on Electrical Machines and Systems 2017年第4期1卷 383-396页

作者： Liming Shi Zhenggang Yin Longbin Jiang Yaohua Li Key Laboratory of Power Electronics and Electric Drive Institute of Electrical EngineeringChinese Academy of SciencesBeijing 100190China

Traditional power supply method for moving electric railway vehicles is based on contact type power collection *** sometimes cannot meet the requirements of modern rail transportation.A new wireless power transfer(WPT)technology can offer significant benefits in modern rail transportation particularly in some stringent *** paper reviews the status and the development of rail transit power supply technology,and introduces a new challenging technology--inductive power transfer(IPT)technology for rail *** established the underpinning of IPT technology and creatively and significantly demonstrated power transfer by using highly resonant tuned coils long time ***,only in recent years the IPT technology has been significantly improved including the transfer air-gap length,transfer efficiency,coupling factor,power transfer capability and so *** is mainly due to innovative semiconductor switches,higher control frequency,better coil designs and high performance material,new track and vehicle construction *** advances in IPT for rail transit and major milestones of the developments are summarized in this *** important technical issues such as coupling coil structures,power supply schemes,segmentation switching techniques for long-distance power supply,and bidirectional IPT systems for braking energy feedback are discussed.

关键词： bidirectional energy transfer inductive power transfer(IPT) magnetic coupling rail transit segmented power supply wireless power transfer(WPT).

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