基于改进自适应backstepping的三相光伏并网逆变器控制器设计  

Design of Three-Phase Photovoltaic Grid-Connected Inverter Controller Based on Improved Adaptive Backstepping

作　　者：牛雅馨 孙丽颖[1] NIU Ya-xin;SUN Li-ying(Shool of Electric Engineering,Liaoning University of Technology,Jinzhou 121001,China)

机构地区：[1]辽宁工业大学电气工程学院,辽宁锦州121001

出　　处：《辽宁工业大学学报（自然科学版）》2018年第6期359-363,367,共6页Journal of Liaoning University of Technology(Natural Science Edition)

基　　金：辽宁省自然科学基金项目(2015020076)

摘　　要：针对三相光伏并网逆变器模型存在参数未知的问题,提出了一种改进自适应控制方法设计控制器,在每一步的虚拟函数设计中引入K类函数,保证闭环系统的稳定,加快系统状态变量收敛速度。仿真结果表明,相对于传统自适应控制方法,该方法更加优良有效。This paper, taking the unknown parameters of the three-phase photovoltaic grid connected inverter model into consideration.A improved adaptive backstepping control method is presented to design controller. The K class function is introduced in each step of virtual function design to ensure the stability of the closed loop system and speed up the convergence speed of the system state variables. Simulation results show that the proposed method is more excellent and effective than traditional adaptive control method.

关 键 词：三相光伏并网逆变器 改进自适应Backstepping 非线性自适应控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]