文档介绍：2014 年 6 月电工技术学报 No. 6
第 29 卷第 6 期 TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY Jun. 2014
交错并联磁集成 Buck 变换器本质安全性
输出纹波电压的分析
杨玉岗祁鳞李龙华
(辽宁工程技术大学电气控制工程学院葫芦岛 125105)
摘要为了使 Buck 变换器以较小的电感达到期望的输出纹波电压指标并满足本质安全要求,
将交错并联磁集成技术应用到 Buck 变换器中,通过合理设置耦合系数,可以增大等效电气电感,
同时减小等效本质安全电感,解决了电气指标要求大电感而本质安全特性要求小电感的矛盾。按
电感的大小将 Buck 变换器分为四个工作区域,比较各个区域的最大输出纹波电压,并分析出纹
波电压与电感、占空比及负载电阻的关系,得出应在最小占空比与最小负载对应的电感和最小占
空比与最大负载对应的电感之间设计变换器。最后通过仿真和实验验证了理论分析的正确性。
关键词:交错并联磁集成本质安全输出纹波电压 Buck DC-DC 变换器
中图分类号:TM46
Analysis of Output Ripple Voltage of Essential Safety for
Interleaving ics Buck Converter
Yang Yugang Qi Lin Li Longhua
(Liaoning Technical University Huludao 125105 China)
Abstract To reach the desired output ripple voltage of a Buck DC-DC converter with a rather
small inductance and especially to meet the requirements of the intrinsic safety, the interleaving
ic technology is applied to Buck converter, which can increase the equivalent electrical
inductance and decrease the equivalent essential safety inductance through setting up the reasonable
coupling coefficient. The method can solve the contradiction between the big electrical inductance and
the small essential safety inductance. The operating region of the converter is divided into four parts
according to the inductance of its inductor. pared the maximum output ripple voltage in