电测与仪表2024，Vol.61Issue(4)：184-191,8.DOI:10.19753/j.issn1001-1390.2024.04.026
带感性负载的Buck-Boost变换器的非线性行为分析及优化控制
Nonlinear behaviour analysis and optimal control of Buck-Boost converter with inductive load
摘要
Abstract
Buck-Boost converters will present rich nonlinear behaviors when certain parameters change.These behaviors will seriously affect the stability of the system and degrade the power quality output by the system.Based on the load char-acteristics of the actual converter,this paper deeply researches the non-linear behavior of Buck-Boost converter under in-ductive impedance load,and proposes a logarithmic delay feedback control method.The method firstly selects the differ-ence between the output delay value of the system and its own value to form a feedback signal;and then,the signal forms a control signal through the proportional link,the summation link and the logarithmic link,which is applied to the system in the form of negative feedback;finally,the stability criterion-based determines the optimal control parameters and con-trols the system.In order to verify the effectiveness of the method,a large number of simulation experiments have been carried out.The results show that the method can well restrain the nonlinear behavior of the system,expand its stability boundary,and improve the power quality of the system output.关键词
Buck-Boost变换器/非线性行为/感性阻抗负载/对数延迟反馈Key words
Buck-Boost converter/nonlinear behavior/inductive impedance load/logarithmic delay feedback分类
信息技术与安全科学引用本文复制引用
龚仁喜,彭维玉,王保平,黎洛琦,王奇..带感性负载的Buck-Boost变换器的非线性行为分析及优化控制[J].电测与仪表,2024,61(4):184-191,8.基金项目
广西自然科学基金资助项目(2017GXNSFAA198168) （2017GXNSFAA198168）
国家自然科学基金资助项目(61561007) （61561007）
