Contactless Power Charger for Light Electric Vehicles Featuring Active Load Matching

Wei Jiang; Song Xu; Nailu Li

Contactless Power Charger for Light Electric Vehicles Featuring Active Load Matching

Wei Jiang

Song Xu

Nailu Li

Vol. 16, No. 1, pp. 102-110, Jan. 2016

10.6113/JPE.2016.16.1.102

Contactless power transfer

Electric vehicle

Load matching

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Abstract

Contactless power transfer technology is gaining increasing attention in city transportation applications because of its high mobility and flexibility in charging and its commensurate power level with conductive power transfer method. In this study, an inductively coupled contactless charging system for a 48 V light electric vehicle is proposed. Although this study does not focus on system efficiency, the generic problems in an inductively coupled contactless power transfer system without ferromagnetic structure are discussed. An active load matching method is also proposed to control the power transfer on the receiving side through a load matching converter. Small signal modeling and linear control technology are applied to the load matching converter for port voltage regulation, which effectively controls the power flow into the load. A prototype is built, and experiments are conducted to reveal the intrinsic characteristics of a series?series resonant inductive power charger in terms of frequency, air gap length, power flow control, coil misalignment, and efficiency issues.

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Cite this article

[IEEE Style]

W. Jiang, S. Xu, N. Li, "Contactless Power Charger for Light Electric Vehicles Featuring Active Load Matching," Journal of Power Electronics, vol. 16, no. 1, pp. 102-110, 2016. DOI: 10.6113/JPE.2016.16.1.102.

[ACM Style]

Wei Jiang, Song Xu, and Nailu Li. 2016. Contactless Power Charger for Light Electric Vehicles Featuring Active Load Matching. Journal of Power Electronics, 16, 1, (2016), 102-110. DOI: 10.6113/JPE.2016.16.1.102.