CAJ | 학술논문

根据电流互感器的工作原理,建立了电流互感器取电线圈的负载工作模型,理论论证了取电线圈在未饱和时的输出功率与副边匝数、负载电流、磁化电流等的对应关系,并通过实验验证了理论推导的正确性,在此基础上提出基于功率控制法的电流互感器取电电源的设计方法,通过控制法拉电容充电电流,把取电线圈的输出功率限定在一个较小的范围,从而使电流互感器取电电源可以适应较大的导线电流范围.最终测试结果表明电流互感器取电电源在30 A～1 000 A的电流范围内可稳定输出近1 W的功率.
근거전류호감기적공작원리,건립료전류호감기취전선권적부재공작모형,이론론증료취전선권재미포화시적수출공솔여부변잡수、부재전류、자화전류등적대응관계,병통과실험험증료이론추도적정학성,재차기출상제출기우공솔공제법적전류호감기취전전원적설계방법,통과공제법랍전용충전전류,파취전선권적수출공솔한정재일개교소적범위,종이사전류호감기취전전원가이괄응교대적도선전류범위.최종측시결과표명전류호감기취전전원재30 A～1 000 A적전류범위내가은정수출근1 W적공솔.
The load model for draw-out power winding is established according to operation principle of current transformer, the relationships among power output, second turns, load current and magnetization current is theoretically analyzed when current transformer core is not saturated. Furthermore, its correctness is verified by experiments. Then a novel design method for current transformer draw-out power supply based on power control is proposed. The power output of current transformer draw-out power supply is limited in a narrow range by controlling charge current of farad capacitor, so that current transformer draw-out power supply can adapt for larger range of wire current. Finally, the test result demonstrates that power output of current transformer draw-out power supply is near 1 W for wire current from 30 A～ 1 000 A.