基于电场感应的水下无线电力传输

为了验证水下电能传输的可行性和研究影响传输效率的因素,采用电场耦合原理进行了简单的无线充电电路设计,对电场耦合式无线电能传输的系统结构和基本工作原理进行介绍,分析了其相比于磁场耦合方式的特点,以及由此带来的相应优势,通过多物理场仿真模拟极板间电场分布,设计了一种LC双边的CPT系统,采用单片机组成脉宽调制控制电路并用功率放大电路模块组成发射端和接收端。结果表明了运用电场耦合原理进行无线充电的可行性,在研究中发现极板间的传输距离是影响水下无线充电效率的一个因素,而且两个电极之间的杂散电容也会影响极板间的功率,所以由于极板间隙的存在极板间的功率损耗较大。所提出的LC双边CPT系统,不仅实现了水下无线电能传输,还保证了在一定距离和频率下传输效率的稳定。

Underwater radio power transmission based on electric field induction

In order to verify the feasibility of underwater power transmission and study the factors affecting the transmission efficiency, a simple wireless charging circuit is designed based on the principle of electric field coupling. The system structure and basic working principle of electric field coupled radio power transmission are introduced, and its characteristics compared with magnetic field coupling mode are analyzed, as well as the corresponding advantages. The distribution of electric field between plates is simulated by multi-physical field simulation, and a double-sided CPT system of LC is designed, which uses a single-chip microcomputer to form a pulse width modulation control circuit and power amplifier circuit modules to form the transmitting end and the receiving end. The results shows that using electric field coupling principle for wireless charging is feasible, the transmission distance between the plates is a factor affecting the underwater wireless charging efficiency, and the stray capacitance between the two electrodes also affects the power between the plates, so the power loss between the plates is largely due to the plate gap. The LC bilateral CPT system proposed in this paper not only realizes underwater radio power transmission, but also ensures the stability of transmission efficiency at a certain distance and frequency.