Maximum efficiency control of wireless power transfer via magnetic resonant coupling considering dynamics of DC-DC converter for moving electric vehicles
Maximum efficiency control of wireless power transfer via magnetic resonant coupling considering dynamics of DC-DC converter for moving electric vehicles
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DOI：
10.1109/apec.2015.7104826
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发表时间：
2015-03
期刊：
影响因子：
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通讯作者：
Katsuhiro Hata;T. Imura;Y. Hori
中科院分区：
文献类型：
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作者：
Katsuhiro Hata;T. Imura;Y. Hori
移动电动汽车的无线充电可以延长它们的巡航距离。无线电力传输通过磁谐振耦合是适合于这种应用。在二次侧采用DC-DC变换器可以使传输效率最大化。然而，控制系统必须设计合理，以满足随车辆运动变化的响应要求。以往的控制器设计没有考虑通过磁谐振耦合实现无线电力传输的DC-DC变换器的动力学特性。本文在分析无线电力传输系统的基础上，提出了一种新的DC-DC变换器模型，利用反馈控制器进行二次电压控制的设计方法。实验表明，该模型是有效的，二次电压控制不仅提高了发射效率，而且提高了任意发射距离的充电功率。
Wireless charging for moving electric vehicles could extend their cruising distance. Wireless power transfer via magnetic resonant coupling is suitable for this application. The transmitting efficiency can be maximized by using a DC-DC converter on the secondary side. The control system, however, must be designed properly to satisfy the response requirements depending on motion of the vehicle. Previous controllers were designed without considering the dynamics of the DC-DC converter for wireless power transfer via magnetic resonant coupling. This paper proposes the design method of secondary voltage control with a feedback controller using a novel DC-DC converter model based on the analysis of wireless power transfer system. Experiments show that the proposed model is effective and that the secondary voltage control improves not only the transmitting efficiency but also the charging power at any transmitting distance.