电力系统保护与控制2011，Vol.39Issue(24)：1-7,7.
基于逆系统方法的并网逆变器自适应模糊滑模控制研究
Research on adaptive fuzzy sliding mode control for grid-connected inverter based on inverse system
吴忠强 1庄述燕 1马宝明 1肖常佳1
作者信息
- 1. 燕山大学工业计算机控制工程河北省重点实验室,河北秦皇岛066004
- 折叠
摘要
Abstract
The main control goal of the three-phase PWM grid-connected inverter applied in wind power generation system is to control the output current and ensure the constant of DC capacitor voltage. Focusing on the characteristics of the three-phase PWM grid-connected inverter with multi-variables, nonlinear and strong coupling etc, firstly, a switch function method is adopted to build the average model of switch cycle. Based on the mathematical model of the grid-connected inverter, an inverse system model of the three-phase PWM-inverter is deduced by using nonlinear inverse system method. A pseudo linear system is formed to realize the feedback linearization and decoupling. Secondly, a sliding mode controller is designed for the pseudo linear system. Considering the modeling errors in practice, the adaptive fuzzy method is applied to solve the problem that the modeling errors are unknown or changed. The theoretical analysis and the simulation result show that the control strategy can ensure the constant of DC capacitor voltage and control the output current of the grid-connected inverter, and it has good dynamic performance.关键词
并网逆变器/逆系统/滑模控制/自适应/模糊逼近Key words
grid-connected inverter/ inverse system/ sliding mode control/ adaptive/ fuzzy approximation分类
信息技术与安全科学引用本文复制引用
吴忠强,庄述燕,马宝明,肖常佳..基于逆系统方法的并网逆变器自适应模糊滑模控制研究[J].电力系统保护与控制,2011,39(24):1-7,7.
