基于UC3906的本安型直流不间断稳压电源的设计  

Design of Intrinsic Safety DC Stabilized UPS Based on UC3906

作　　者：文桦[1] 张晓伏[1] 

机构地区：[1]黄淮学院电子科学与工程系,河南驻马店463000

出　　处：《河南大学学报（自然科学版）》2014年第4期393-397,415,共6页Journal of Henan University:Natural Science

基　　金：河南科技攻关项目(132102210523)

摘　　要：为了解决矿用供电电网停电导致通讯及监控设备无法正常工作的现状,设计了一种本安型直流不间断稳压电源.基于信号流程和电路功能模块划分,利用三端稳压器TL431配合蓄电池专用充电管理芯片UC3906实现了对镍氢电池的智能充电和过放电控制.分析了本安型直流不间断稳压电源的设计原理、各组成模块的功能以及工作过程.为了满足设计电源的不间断性和本质安全性要求,设计有切换电路、可调稳压电路及过压、过流保护等电路.当检测到矿用交流电不能正常供电时自动进行电路切换,启动镍氢电池供电,从而保证负载持续工作.测试结果表明:所设计的电源具有稳压性能优良,电压调整率、负载调整率高等优点;工频耐压、绝缘电阻及火花点燃等实验满足了本安型电气设备的要求.In order to solve the problem that the communication and monitoring equipments don＇t work due to grid failure,a kind of intrinsic safety DC stabilized UPS was designed. Based on the signal flow and functional circuit modules, the charge and over-discharge control of Ni-MH battery are realized by combining three-terminal voltage regulator TL431 and the device UC3906. Also, design principle, module functions and working process for intrinsic safety DC stabilized UPS are analyzed. In order to meet the unremittance and intrinsic safety of the power, the switching circuit, voltage regulator circuit, over voltage and over-current protective circuitry are added in power supply circuitry. The power can switch and turn on Ni-MH battery when mine-used AC fails, which ensures continuous work of the load. The test result showed that the designed power supply is of good voltage regulation performance, high regulation rate of voltage and load; the experiments, such as frequency voltage, insulation resistance, spark ignition , reached the requirements of intrinsically safe electrical equipment.

关 键 词：本安型 镍氢电池 不间断电源 UC3906 TL431 

分 类 号：TD611[矿业工程—矿山机电]