基于磁保持继电器的微功耗双电源切换系统  

Micropower Dual Power Switching System Based on Magnetic Retention Relay

作　　者：廖进蔚 蔡昌新[1] 易康 陈泓宇 LIAO Jin-wei;CAI Chang-xin;YI Kang;CHEN Hong-yu(School of Electronic Information and Electrical Engineering,Yangtze University,Jingzhou 434020,China)

机构地区：[1]长江大学,电子信息与电气工程学院,湖北荆州434020

出　　处：《电力电子技术》2025年第4期32-35,38,共5页Power Electronics

基　　金：国家自然科学基金(42174189,61572084)。

摘　　要：为了通过低成本解决传统双电源自动切换系统功耗大的问题,采用大电流磁保持继电器作为切换动力元件,优选合适的微功率磁保持继电器、电源模块、电压检测模块、中间继电器等器件作为控制器件,设计一种微功耗控制双电源自动切换系统,仅通过设计的逻辑控制电路即可控制大电流磁保持继电器的闭合与断开,而不用单片机和磁保持继电器驱动芯片等高端元件,减少了制造成本。论述了系统的工作原理,详细给出系统在主电源与备用电源相互切换的逻辑流程、系统容错分析和处理的设计方案。实验表明,该系统可极大地减少功耗,与传统的双电源自动切换系统相比,节电率约为89.6%,且具有二级互锁、故障报警的功能,安全可靠,体积较小,维修方便。In order to solve the problem of high power consumption of traditional dual power automatic switching system with low cost,a high-current magnetic latching relay is adopted as the switching power component,and suitable micro-power magnetic latching relay,power module,voltage detection module,intermediate relay and other devices are selected as the control devices.A micropower control dual power automatic switching system is designed.The closure and disconnection of the high-current magnetic holding relay can be controlled only through the designed logic control circuit,and the high-end components such as single-chip microcomputer and magnetic holding relay driver chip are not needed,which reduces the manufacturing cost.The working principle of the system is discussed,the logic flow of switching between the main power supply and the standby power supply,the fault tolerance analysis and the design scheme of the system are given in detail.The experiment shows that the system can greatly reduce power consumption,and the power saving rate is about 89.6%compared with the traditional dual power automatic switching system,and has two level interlock,fault alarm function,safe and reliable,small size,easy maintenance.

关 键 词：双电源自动切换系统 微功耗 磁保持继电器 

分 类 号：TN86[电子电信—信息与通信工程]