Effective Coupling Factors for Series and Parallel Tuned Secondaries in IPT Systems Using Bipolar Primary Pads
Effective Coupling Factors for Series and Parallel Tuned Secondaries in IPT Systems Using Bipolar Primary Pads
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DOI：
10.1109/tte.2017.2648123
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发表时间：
2017-01
影响因子：
7
通讯作者：
F. Lin;Seho Kim;G. Covic;J. Boys
中科院分区：
文献类型：
--
作者：
F. Lin;Seho Kim;G. Covic;J. Boys
感应电力传输是通过使彼此接近的感应线圈谐振来将电力从源输送到负载的方法。存在两种主要的焊盘拓扑结构：一种可以产生非极化场，另一种可以产生极化场。已经提出了诸如双极焊盘（BPP）的多线圈焊盘作为可与极化焊盘和非极化焊盘两者互操作的焊盘拓扑。BPP包括两个理想地重叠的相互去耦的线圈，其可以以任何相对幅度或相位被驱动。极化焊盘结构，例如双d焊盘，不等同于BPP，并且极化焊盘是多线圈焊盘的子集。它还表明，BPP初级和次级之间的有效耦合因子（$k_{eff}}$）取决于每个初级线圈和次级线圈之间存在的耦合因子，反射阻抗，以及初级线圈之间的电流的相对大小和相位。提出了一个描述k_{eff}$的方程，并考虑了所有这些因素，以显示BPP中的每个线圈如何通电以控制VA传输。
Inductive power transfer is a method of delivering power from a source to a load by resonating inductive coils in proximity with each other. Two main pad topologies exist: one that can generate nonpolarized and one that can generate polarized fields. Multicoil pads such as bipolar pads (BPPs) have been proposed as a pad topology that is interoperable with both polarized and nonpolarized pads. BPPs comprise two ideally overlapped mutually decoupled coils, which can be driven in any relative magnitude or phase. A polarized pad structure, such as a double d pad, is not equivalent to a BPP, and the polarized pad is a subset of the multicoil pad. It also shows that the effective coupling factor ( $k_{\mathrm {eff}}$ ) between the BPP primary and the secondary depends on the coupling factors that exist between each primary coil and the secondary coil, the reflected impedances, and the relative magnitude and phase of currents between the primary coils. An equation that describes $k_{\mathrm {eff}}$ is proposed and considers all these factors to show how each coil in a BPP can be energized to control VA transfer.