CAJ | 학술논문

针对现有电流互感器取能电源存在供电死区的现象，提出了一种可适应较小电流电力母线的电流互感器取能电源供电方案。在分析电源取能原理的基础上，建立了电流互感器取能电源的电路模型，并推导了电源取得最大功率的条件。选择高饱和磁感应强度的硅钢材料作为铁芯，设计了五级电荷泵电路、能量收集电路以及电源管理电路。基于所提出的方案研制了样机，以无线测温模块作为负载，对样机整体进行了测试。实验结果表明，当电流在1~1000 A范围内时，电源工作于非饱和低热耗状态。
침대현유전류호감기취능전원존재공전사구적현상，제출료일충가괄응교소전류전력모선적전류호감기취능전원공전방안。재분석전원취능원리적기출상，건립료전류호감기취능전원적전로모형，병추도료전원취득최대공솔적조건。선택고포화자감응강도적규강재료작위철심，설계료오급전하빙전로、능량수집전로이급전원관리전로。기우소제출적방안연제료양궤，이무선측온모괴작위부재，대양궤정체진행료측시。실험결과표명，당전류재1~1000 A범위내시，전원공작우비포화저열모상태。
In view of the feed dead zone using the current transformer as power source,a current transformer power supply scheme for low current power line is proposed.A circuit model for power supply is developed based on the electromagnetic induction theory,and the relationship between the output power,output voltage,load condition,magnetic coil turns,and core parameter is analyzed.Silicon steel with highly saturated magnetic flux density is selected as the magnetic core.Then,a five-level charge pump circuit,an energy harvesting circuit and a power management circuit each are designed.Finally,power supply equipment is developed based on the scheme aforementioned,and tested using the wireless temperature measuring module as the load.Experimental test shows that the power supply provides stable outputs with no saturation and low heat consumption when the bus current is 1~1 000 A.