一种新型大横向公差IPT系统及其电路分析

Q. Wei, Weimin Guo, Xinliang Sun, Guangzhu Wang, Xunfang Zhao, Feng Li, Y. Li
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引用次数: 6

摘要

最近出现了一种新型的电动汽车感应功率传输(IPT)结构。新结构可以大大增加气隙和横向容差。本文对这些优点进行了描述和分析。从分析可以看出,更长的、更宽的磁芯和更宽的线圈宽度会增加耦合系数。本文还介绍了一种由LCL补偿和降压电路组成的新型电路结构。电路一次侧的电流将随负载需求而变化。这样可以在传输功率小的情况下实现更高的效率。基于这些技术,建立了一个2kW的IPT原型系统。当气隙和侧向容差分别达到38cm和40cm时,效率是可以接受的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A New Type of IPT System with Large Lateral Tolerance and its Circuit Analysis
A new kind of inductive power transfer (IPT) structure for electric vehicles (EV) appears recently. The new structure can greatly increase the air gap and lateral tolerance. Those merits are described and analyzed in this paper. It can be seen from analysis that a longer, wider magnetic core and wider coil width increase the coupling coefficient. A new circuit structure composed of LCL compensation and the buck circuit is also described in this paper. Current in the primary side of the circuit will vary with load demand. This way, higher efficiency can be achieved when power transferred is small. A 2kW prototype IPT system is built based on these techniques. When the air gap and lateral tolerance reaches 38cm and 40cm separately, the efficiency is acceptable.
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