一种具有强抗偏移能力的感应式无线电能传输系统
首发时间:2020-06-24
摘要:本文提出了一种具有强抗偏移能力的感应式无线电能传输系统。由于在通常情况下,充电的目标很难精确放置在需要的位置中或精确对正,因此需要对感应式无线电能传输系统的抗偏移能力进行加强。本文提出了一种新型补偿结构--PS/SP拓扑结构,该拓扑结构采用原边和副边并联电容的混合结构,使得系统不仅具有较高的抗偏移能力,而且实现了逆变器的零电压开关。由于等效输入阻抗的角度可以通过补偿电感的阻抗来调节,该拓扑可以选择一个合理的逆变器输出电流角度来减小开关损耗。本文设计了一个大约250w的PS/SP拓扑原型,通过实验证明此系统具有良好的抗偏差能力,效率高达94.4% 。在最大耦合系数处,输入阻抗角度可调至零以上,开关管实现了零电压开关。
关键词: 电气工程;感应式无线电能传输系统 强抗偏移 PS/SP
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A Family of High-Misalignment Tolerant Compensation Topologies for IPT Systems
Abstract:This paper presents a high-misalignment tolerant inductive power transfer (IPT) system. Due to the fact charging targets are difficult to accurately match the certain position in the usual situation, the misalignment tolerance of the IPT system is necessary. The topology proposed followed, named PS/SP, utilized a mixture of the capacity paralleled in the secondary side and the component paralleled in the primary side, which fulfil not only a high tolerance of misalignment but the zero-voltage-switching of the inverter. As the angle of equivalent input impedance can be adjusted by the impedance of the compensating inductance, this topology can choose a appreciate output-current angle of the invert to decrease switching loss. The parameters of other impendences are submitted, too. A prototype of PS/SP topology with approximately 250w has been submitted. It has a great tolerance of misalignment and the efficiency is up to 94.4%. the angle of input impendence is adjusted above zero at the the largest coupling coefficient and the switching tube has fulfilled zero voltage switching.
Keywords: Electrical engineering IPT High-Misalignment PS/SP
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