一种适用于小电流母线的电子式电流互感器供电电源

发布时间：2019-06-21 01:34

【摘要】：针对电流互感器供电电源存在供电死区、线圈易饱和问题,文中基于能量收集的思想,设计了七级电荷泵电路实现能量收集和转移。采用磁导率较小的硅钢材料作为铁芯且通过开气隙的方法增加铁芯磁路磁阻,使铁芯不易饱和。采用超级电容存储电荷泵转移的电荷,并设计了电源管理模块控制泄能通道和供电通道。最后研制了样机,以低功耗单片机控制的无线测温模块和通用分组无线业务(GPRS)模块为负载进行了测试。实验结果表明电源样机能够在输电线电流为1A时为负载提供足够能量。与二次绕组为1 500匝的电流互感器供电电源相比,所设计的550匝供电电源更适用于输电线电流小的情况。
[Abstract]:In order to solve the problem of dead power supply and easy saturation of coil in current transformer power supply, based on the idea of energy collection, a seven-stage charge pump circuit is designed to realize energy collection and transfer. The magnetic resistance of the iron core is increased by using the silicon steel material with low permeability as the iron core and the magnetic resistance of the iron core is increased by opening the air gap, which makes the iron core difficult to saturate. The supercapacitor is used to store the charge transferred by the charge pump, and the power management module is designed to control the energy discharge channel and the power supply channel. Finally, the prototype is developed, and the wireless temperature measurement module controlled by low power single chip microcomputer and the general packet wireless service (GPRS) module are tested as the load. The experimental results show that the power supply prototype can provide enough energy for the load when the current of the transmission line is 1A. Compared with the current transformer power supply with secondary winding of 1500 turns, the designed 550 turn power supply is more suitable for the case of low current of transmission line.
【作者单位】：南京航空航天大学自动化学院;中原工学院电子信息学院;
【基金】：河南省高等学校重点科研项目计划资助项目(15A413020)~~
【分类号】：TM452

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