三电平逆变器的SVPWM控制与MATLAB仿真研究样本.doc

摘 要

近年来, 三电平逆变器在大容量、 高压的场合得到了越来越多的应

用。在其众多的控制策略中, SVPWM 算法具有调制比大、 能够优化输出电

压波形、 易于数字实现、 母线电压利用率高等优点。本文首先对三电平

逆变器技术的发展状况进行了综述, 分析了三电平逆变器的几种拓扑结

构, 控制策略以及各自的优缺点。

其次, 以二极管箝位式三电平逆变器为基础, 阐述了三电平逆变器的

算法的仿真, 观察系统的输出波形, 分析波形, 并进行比较, 验证了算法

的可行性。

关键词: 三电平逆变器 空间电压矢量控制( SVPWM) MATLAB 仿真

ABSTRACT

Recently, three-level inverter in the large capacity and high

pressure situation got more and more applications fields. Among

many of modulation strategies, SVPWM has been one of the most

popular research points. The main advantages of the strategy are

the following: it provides larger under modulation range and offers

significant flexibility to optimize switching waveforms, it is

well suited for implementation on a digital computer, it has higher

DC voltage utilization ratio. Initially, summing up the

development condition of three-level inverter technology,

control strategy and their respective advantages and

disadvantages.

Secondly, the paper based on the ground-clam -p diode type

of the synthesis reference voltage vector and optimizes the

function sequence of switch vector.

Finally ,using MATLAB/SIMULINK to carry on the simulation

analysis. Building the simulation system model to realized to

three-level inverter SVPWM control algorithm, and to confirmed the

algorithm feasibility.

Keywords: Three-level inverter; space voltage vector control

(SVPWM); MATLAB simulation