基于模型预测控制的三相逆变器仿真研究

摘要

基于模型预测控制的三相逆变器应用广泛，比如电子设备、电力系统、工业等行业，都会运用到基于模型预测控制的三相逆变器系统或工具。更高效率和更高精度的基于模型预测控制的三相逆变器一直是研究的热点。在我们日常生活中，基于模型预测控制的三相逆变器随处可见，因为其相比其他的控制方式而言，运行稳定且控制精度较高等优势，最重要的是基于模型预测控制的三相逆变器在并网控制等方面具有很好的优势。随着自动控制技术和微电子技术的不断革新，目前的技术水平为实现基于模型预测控制的三相逆变器调节控制打下坚实的基础，提供扎实的理论依据。

本次设计主要以基于模型预测控制的三相逆变器控制系统设计应用作为研究背景，运用MATLAB仿真工具搭建相应的仿真模型。该模型利用MATLAB软件中的模块库，建立了基于模型预测控制的三相逆变器在电力系统应用中的系统仿真模型，通过 Matlab仿真软件搭建仿真模型,运行仿真，并对基于模型预测控制的三相逆变器的仿真结果进行了分析。本次设计采用的模型预测控制为PID模型预测控制算法，经过对控制系统进行仿真，可以明显的看出，基于模型预测控制的三相逆变器控制系统响应快，没有超调量，运行稳定，抑制震荡和发散的性能较好等特点。

关键词：三相逆变器，模型预测控制，建模与仿真，MATLAB

Abstract

Three-phase inverter based on model predictive control is widely used, such as electronic equipment, power system, industrial and other industries, will be used in the three-phase inverter system or tools based on model predictive control. Higher efficiency and higher accuracy of three-phase inverter based on model predictive control is always a research hotspot. In our daily life, three-phase inverter based on model predictive control can be seen everywhere, because compared with other control methods, it has the advantages of stable operation and higher control accuracy. The most important is three-phase inverter based on model predictive control has good advantages in grid-connected control and other aspects. With the continuous innovation of automatic control technology and microelectronics technology, the current technical level for the realization of model predictive control based on three-phase inverter regulation control to lay a solid foundation, provide a solid theoretical basis.

This design mainly based on model predictive control three-phase inverter control system design and application as the research background, using MATLAB simulation tools to build the corresponding simulation model. The model uses the module library of MATLAB software to establish the system simulation model of three-phase inverter based on model predictive control in power system application. The simulation model is built by MATLAB simulation software, and the simulation results of three-phase inverter based on model predictive control are analyzed. The predictive control adopted in this design is PID predictive control algorithm. After the simulation of the control system, it can be obviously seen that the three-phase inverter control system based on model predictive control has the characteristics of fast response, no overshoot, stable operation, and good performance in suppressing shock and divergence.

Key words: Three phase inverter, Model predictive control, Modeling and simulation, MATLAB

摘要................................................................................................. 1

第一章绪论.................................................................................... 6

1.1 概述...................................................................................... 6

1.2 课题研究的现状............................................................... 7

1.3 课题研究的意义............................................................... 8

1.4 仿真工具MATLAB/Simulink简介............................ 8

1.5 课题的研究内容及章节安排...................................... 10

第二章基于模型预测控制的三相逆变器......................... 12

2.1 模型预测控制的原则................................................... 12

2.2 模型预测控制系统的结构.......................................... 13

2.3 三相逆变器的预测模型设计...................................... 15