电力巡检机器人移动式无线充电系统分析与验证

Analysis and Verification of Dynamic Wireless Charging System for Substation Inspection Robot

为提升变电站的智能化程度,减少巡检成本,采用电力巡检机器人代替人工进行日常巡检。但电力巡检机器人续航能力有限,无法实现全天候巡检,于是使用移动式无线充电的方式进行供电,实现边走边充与二十四小时全天候巡检。本文中首先分析了线圈互感与系统效率之间的关系;接着,针对系统中采用的分段式发射线圈导轨,提出了导轨软切换方式,减小切换过程中的冲击电流,保护了电路元件;最后,通过实验,验证了线圈互感对效率的影响以及导轨软切换方式的可行性与有效性。

To improve the degree of intelligence of a substation and cut down the cost of inspection,substation inspection robots instead of the human labor are employed to perform daily inspections.However,the battery life greatly limits the work of inspection robots,so the full-time inspection cannot be realized.To solve this problem,a dynamic wireless charging method is used to charge the robots,so that the robots can perform inspections while charging and realize full-time inspection.In this paper,the relationship between coil mutual inductance and system efficiency is analyzed at first.Then,aimed at the segmented primary coil rails used in the dynamic wireless charging system,a soft-switching method for rails is put forward to reduce the inrush current during the switching process,thus protecting the circuit components.Finally,the influence of coil mutual inductance on the system efficiency was verified by experimental results,and the feasibility and effectiveness of the soft-switching method for rails was also proved.