峰值电流型DC-DC Boost变换器斜坡补偿技术优化  

Optimization of Slope Compensation Technology of DC-DC Boost Converter of Peak Current Mode

作　　者：王思思[1] 程为彬[1] 郭颖娜[1] 宋久旭[1] 杨志龙[1] 

机构地区：[1]西安石油大学电子工程学院,陕西西安710065

出　　处：《西安石油大学学报（自然科学版）》2016年第1期121-126,共6页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：陕西省工业攻关计划(编号:2013K07-14)

摘　　要：以峰值电流型DC-DC Boost变换器为模型,针对无斜坡补偿时变换器出现的次谐波振荡不稳定现象以及固定斜坡补偿降低了参考电流和输入功率等问题,提出优化补偿策略。对无斜坡补偿、固定斜坡补偿、优化斜坡补偿进行分析,分别推导出其参考电流和电感电流平均值的表达式。通过仿真和对比实验验证了理论分析的正确性及所提出优化补偿策略的有效性。The peak current mode controlled DC-DC Boost converter without slope compensation will produce the instability phenome-non of the second harmonic oscillation, and the peak current mode controlled DC-DC Boost converter with fixed slope compensation willreduce reference current and input power. For solving these problems, a slope compensation optimization strategy is put forward. Thepeak current mode controlled DC-DC Boost converter without slope compensation, with fLxed slope compensation and with optimizedslope compensation is analyzed separately, and their average reference current and inductive current expressions are derived. The cor-rectness of the theoretical analysis and the effectiveness of the slope compensation optimization strategy in this paper are verified throughthe simulation and the contrast experiments.

关 键 词：DC-DC BOOST变换器 优化补偿 参考电流 输入功率 

分 类 号：TM46[电气工程—电器]