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首页> 外文期刊>International Journal of Microwave and Wireless Technologies >Criticality mitigation in a quasi-constant coupling position independent resonant IPT network
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Criticality mitigation in a quasi-constant coupling position independent resonant IPT network

机译：准恒定耦合位置无关的共振IPT网络中的临界缓解

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This paper discusses some significant design issues that are faced in resonant inductive system for wireless power transfer 'on the move'. The targeted system adopts a single AC source to power a sequence of transmitting (Tx) coils, placed along the Rx path, whose geometry is optimized to minimize the variations of coupling for every possible Rx position. To retain a constant coupling coefficient, two nearby Tx coils are series-connected and simultaneously activated, establishing a path without any theoretical bound on its length, by a suitable switching network. This work analyzes the effects of asynchronous switching times, which are rigorously accounted for and minimized by a proper design of the compensating circuit elements, minimizing both the voltage spikes and the over currents on the coils, while keeping the system at resonance. A prototype operating at 6.78 MHz is built and experimental validations are carried out to verify the feasibility of a constant coupling link without experiencing the mentioned effects, but the adopted procedure is general and independent on its size or frequency.
机译：本文讨论了在“感应式”无线功率传输的谐振感应系统中面临的一些重要设计问题。目标系统采用单个交流电源为沿Rx路径放置的一系列发射（Tx）线圈供电，并对其几何结构进行了优化，以使每个可能的Rx位置的耦合变化最小。为了保持恒定的耦合系数，两个附近的Tx线圈被串联并同时激活，从而通过合适的开关网络建立了一条在长度上没有任何理论限制的路径。这项工作分析了异步开关时间的影响，通过适当设计补偿电路元件来严格考虑和最小化异步开关时间，从而将电压尖峰和线圈上的过电流最小化，同时保持系统处于谐振状态。建立了工作在6.78 MHz的原型，并进行了实验验证，以验证恒定耦合链路的可行性，而不会遇到上述影响，但是所采用的过程是通用的，并且取决于其大小或频率。

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