Z源逆变器高阶微分反馈控制研究  

Research on Higher-order Differential Feedback Control of Z-source Inverters

作　　者：刘松涛 王丙元 LIU Songtao;WANG Bingyuan(College of Electronic Information and Automation,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]中国民航大学电子信息与自动化学院,天津300300

出　　处：《计算机测量与控制》2024年第2期135-141,197,共8页Computer Measurement &Control

基　　金：国家自然基金科学项目(U1333102)。

摘　　要：以航空静止变流器控制为研究对象,针对传统两级逆变结构效率低、系统复杂以及死区效应带来的死区波形畸变问题,引入Z源逆变器设计航空静止变流器;针对Z源逆变器系统高阶且非最小相位造成的控制器设计复杂的问题,引入了一种基于高阶微分器的反馈控制策略,该控制策略利用高阶微分器对系统各阶状态变量进行估计,具有不依赖于精确系统模型的特点;仿真实验表明,将此反馈控制器用于Z源逆变器输出电压控制时能够有效跟踪给定输出电压,系统受到外部扰动时依然能保持良好的静态和动态性能,满足静变流器控制需求。Taking aeronautic static inverters as the research object,the Z-source inverter is introduced to design aeronautic static inverter for its traditional two-stage structure with low efficiency and complex system and the waveform distortion caused by the dead zone effect.Aiming at the complex controller design due to the high order and non-minimum phase of Z-source inverter system,a feedback control strategy based on a high-order differentiator is introduced.The control strategy uses the higher-order differentiators to estimate the system state variables at each order,and it does not depend on an exact system model.The simulation experiments show that when used for Z-source inverter output voltage control,this feedback controller can effectively track the given output voltage,and maintain a good steady-state and dynamic performance under external disturbances,meeting the aeronautic static inverter control requirements.

关 键 词：航空静止变流器 Z源逆变器 高阶微分器 状态估计 反馈控制 

分 类 号：TM464[电气工程—电器]