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An improved partially overlapped transmitting array for enhancement of wireless power transmission efficiency

机译:改进的部分重叠的发射阵列,以提高无线电力传输效率

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摘要

In the conventional transmitting coil array for wireless power transmission (WPT), magnetic fields generated through the gaps between coil elements often reduce the overall magnetic fluxes and therefore the power transfer efficiency due to their directions. To overcome the problem, an overlapping of coil elements is applied to develop a WPT coil array system. In this article, the printed spiral coil is used as the resonance unit with low profile, miniaturization, easy to manufacture, and high integration. The overlapping 2 x 2 coil array is able to generate an enhanced magnetic field without dead points. In comparisons with the conventional system, the presented transmitting system provides a larger and more uniform magnetic field distribution with higher wireless power transmission efficiency. Both the simulation and measured efficiency are 70%-78% at nine different observation points. Both simulation and measurement results demonstrate the effectiveness and efficiency as well as feasibility of the proposed system.
机译:在常规的用于无线电力传输(WPT)的发射线圈阵列中,通过线圈元件之间的间隙产生的磁场通常会减小总体磁通量,并因此由于其方向而减小功率传输效率。为了克服该问题,线圈元件的重叠被应用于开发WPT线圈阵列系统。在本文中,印刷螺旋线圈被用作具有低轮廓,小型化,易于制造和高度集成的共振单元。重叠的2 x 2线圈阵列能够产生没有死点的增强磁场。与传统系统相比,本发明的发射系统提供了更大且更均匀的磁场分布以及更高的无线电力传输效率。在9个不同的观察点上,仿真效率和实测效率均为70%-78%。仿真和测量结果均表明了该系统的有效性和效率以及可行性。

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