一种新型矿用本质安全型电源的设计.pdfVIP

10 工 矿 自 动 化 No. 10 2010 10 Industry and Mine Automation Oct. 2010 实验研究 : 1671- 251X( 2010) 10- 0021- 04 朱前伟 ( , 213015) : 针对目前煤矿井下多输入电压等级本质安全型电源 笨重和单输入电压等级本质安全型电源 局限性问题, 提出了一种新型本质安全型电源 设计方案该新型本质安全型电源采用 R 型隔离变压器, 体积小; 采用高性能 DC/ DC 开关转换电源, 提高了本质安全型电源 转换效率, 且减小了输出纹波噪声; 同时采用由过流检测芯片单稳态触发芯片大功率三极管等组成 双重化过流和过压保护电路, 提高了本 质安全型电源 可靠性 : 矿井; 电源; 本质安全; 交直流转换; 过电流保护; 过电压保护; 双重化保护电路 : TD611. 3 :B Design of a New ype of Mineused Intrinsic Safety Power Supply ZHU Qianwei ( Changzhou Automation Research Institute of CCRI. , Changzhou 213015, China) Abstract : In order to solve problems of bulkiness of intrinsic safety power supply with multilevel input voltage and limitation of the one with singlelevel input voltage in coal mine underground at present, the paper proposed a design scheme of a new type of intrinsic safety power supply. he intrinsic safety power supply uses R isolation transformer with small volume and DC/ DC switching converter which improves the intrinsic safety power supply s converting efficiency and decreases the power supply s output ripple. Meanwhile, the intrinsic safety power supply uses dualprotection circuit of overcurrent and overvoltage composed of overcurrent detection chip, oneshot trigger chip, highpower transistors, etc, and the protection circuit improves the reliability of the intrinsic safety power supply. Key words: mine, power supply, intrinsic safety, AC/ DC conversion, over current protection, over voltage protection, dualprotection circuit 0 : 2010- 06- 08 : ( 1979- ) , , , , Email: