电源学报2018，Vol.16Issue(3)：16-22,7.DOI:10.13234/j.issn.2095-2805.2018.3.16
DC-DC变换器的通用大信号自适应控制策略构建
Formulation of General Large-signal Adaptive Control Strategy for DC-DC Converter
摘要
Abstract
A general large-signal adaptive control strategy for a DC-DC converter is proposed to deal with its wide-range operations.The global operation space of the DC-DC converter is divided into several local subspaces, then small-signal modeling and linear compensation design are performed respectively. With convex combination, a global control structure is constructed by linear compensators in each subspace via weighted functions that automatically determine the weighted coefficients of every local linear compensator, which makes the controller possesses a region-adaptive functionality. According to the proposed large-signal controller, the nonlinear control problem of the DC-DC converter can be resolved indirectly through linear compensation approaches, by which, the advantages of clear physical meaning and easy design of the classical frequency-domain methods are preserved. Finally, with the basic DC-DC converter and cascaded DC-DC converter as study objects, the design process of the large-signal control strategy was illustrated, and the effectiveness of this strategy was verified by experimental and simulation results.关键词
DC-DC开关变换器/自适应控制/大信号控制/权函数Key words
DC-DC switching converter/adaptive control/large-signal control/weighted function分类
信息技术与安全科学引用本文复制引用
刘宿城,李晴晴,刘晓东,方炜..DC-DC变换器的通用大信号自适应控制策略构建[J].电源学报,2018,16(3):16-22,7.基金项目
国家自然科学基金资助项目(51407003) （51407003）
安徽省自然科学基金资助项目(1508085QE97)Project Supported by National Natural Science Foundation of China(51407003) （1508085QE97）
Anhui Provincial Natural Science Foundati-on(1508085QE97) （1508085QE97）
