摘要
针对Buck-Boost矩阵变换器实际输出电压与其参考电压间存在较大跟踪误差的问题,提出一种基于重复控制的复合控制策略。阐述了该控制策略的基本原理,构建了以Buck-Boost矩阵变换器中电容电压与电感电流为系统控制变量的复合控制闭环,并就该控制闭环中复合控制器的具体设计方法进行了深入研究,最后构建仿真模型对其控制效果进行了验证,同时与比传统双闭环控制策略进行了对比仿真分析,结果表明:该控制策略不仅有效解决了Buck-Boost矩阵变换器存在的稳态跟踪误差大的问题,而且具有比传统双闭环控制策略更加优良的谐波抑制能力,因而具有更好的应用价值。
Aiming at the problem of large tracking error between the output voltage and reference voltage in BuckBoost matrix converter,a compound control strategy based on repetitive control is proposed. The basic principle of the control strategy is explained. The compound control loop for capacitor voltage and inductor current in BuckBoost matrix converter is constructed respectively,and the design method of the compound controller is further researched in the paper. Finally,the proposed strategy is compared with traditional double-loop control strategy,and verified by various simulations. The simulation results show that the tracking problem in steady state is solved effectively by the proposed strategy,and it has better capability in harmonic suppression than that of traditional double-loop control strategy. Therefore,better application value can be obtained.
出处
《电子测量与仪器学报》
CSCD
北大核心
2016年第6期931-936,共6页
Journal of Electronic Measurement and Instrumentation
基金
国家自然科学基金(51477047)
湖南省自然科学湘潭联合基金(2016JJ5026)资助项目
