Impedance matching and power division algorithm considering cross coupling for wireless power transfer via magnetic resonance
Impedance matching and power division algorithm considering cross coupling for wireless power transfer via magnetic resonance
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DOI：
10.1109/intlec.2012.6374468
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发表时间：
2012-12
期刊：
影响因子：
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通讯作者：
Koh Kim Ean;Beh Teck Chuan;T. Imura;Y. Hori
中科院分区：
文献类型：
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作者：
Koh Kim Ean;Beh Teck Chuan;T. Imura;Y. Hori
已经针对各种应用广泛地研究了经由磁谐振耦合的无线功率传输。实现阻抗匹配，使得传输系统对位置改变和负载改变有弹性。近年来，同时为多个负载供电成为无线电能传输研究和设计的热点。除了保持高效率之外，可控的功率分配也是多接收机系统中的重要特征。这是由于功率分配比不仅取决于负载，而且取决于每个接收器到发射器的差距。另一方面，当接收器彼此相对靠近放置时，存在交叉耦合。本文提出了一种新的考虑接收机间交叉耦合的阻抗匹配和功率分配算法。首先将无线电能传输系统用等效电路表示，推导了阻抗匹配和功率分配算法。新方法，然后使用模拟验证。
Wireless power transfer via magnetic resonant coupling has been extensively researched for various applications. Impedance matching is implemented so that the transfer system is resilient to positional changed and load changed. Recently powering multiple loads simultaneously is becoming the focus in wireless power transfer researches and designs. Apart from maintaining high efficiency, controllable power division is also an important feature in multi-receiver system. This is due to ratio of power division depends not only on the load but also on the gap of each receiver to the transmitter. On the other hand, cross coupling exists when receivers are placed relatively near to each other. In this paper, novel algorithm is proposed for impedance matching and power division considering cross coupling in between two receivers. The wireless power transfer system is first represented by equivalent circuit and the algorithm for impedance matching and power division is derived. The new method is then verified using simulations.