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Wireless power charger for light electric vehicles

Jiang, Wei and Xu, Song and Li, Nailu and Lin, Zhengyu and Williams, Barry W. (2015) Wireless power charger for light electric vehicles. In: 2015 IEEE 11th International Conference on Power Electronics and Drive Systems. Institute of Electrical and Electronics Engineers Inc., pp. 562-566. ISBN 9781479944033

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Wireless power transmission technology is gaining more and more attentions in city transportation applications due to its commensurate power level and efficiency with conductive power transfer means. In this paper, an inductively coupled wireless charging system for 48V light electric vehicle is proposed. The power stages of the system is evaluated and designed, including the high frequency inverter, the resonant network, full bridge rectifier, and the load matching converter. Small signal modeling and linear control technology is applied to the load matching converter for input voltage control, which effectively controls the wireless power flow. The prototype is built with a dsPIC digital signal controller; the experiments are carried out, and the results reveal nature performances of a series-series resonant inductive power charger in terms of frequency, air-gap length, power flow control, and efficiency issues.