文档介绍：交-直-交变频调速系统仿真研究
摘要
随着电力电子技术、计算机技术、自动控制技术的迅速发展，交流变 频调速技术得到了迅速发展，其显著的节能效益，高精确的调速精度，宽 泛的调速范围，完善的保护功能，以及易于实现的自动通信功能，得到了 广大用户的认可，在运行的安全可靠、安装使用、维修维护等方面，也给 使用者带来了极大的便利。因此，研究交一直一交变频调速系统的基本工 作原理和作用特性意义十分重大。
本文研究了变频调速系统的基本组成部分，主回路主要有三部分组成: 将工频电源变换为直流电源的“整流器”；吸收由整流器和逆变器回路产 生的电压脉动的“滤波回路”，也是储能回路；将直流功率变换为交流功 率的“逆变器”。使用Matlab/Simulink搭建交一直一交变频调速系统的仿 真模型，通过试验对该交一直一交变频调速系统的基本工作原理、工作特 性及作用有更深的认识，也对谐波对于交一直一交变频调速系统的影响有 了一定的了解。
关键词：交一直一交变频，整流，逆变，谐波，仿真。
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Abstract
With power electronic technology, computer technology, automatic control tech-nology is developing rapidly, AC variable-frequency system technology has been de-veloping rapidly. Significant energy efficiency and
precision and broad scope of spe-ed control, perfect protection and easy to implement automatic communications, all which have win the many users acceptance . Therefore, studying the AC-DC-AC variablefrequency systerm for the role of the basic working principle and characteristics of great significance.
In this paper we studied the basic component of the variable frequency speed regulation system. There are three main components: the "rectifier" which convert the AC power into DC power; the "loop filter" can absorbed the voltage pulse which the rectifier and inverter circuit generated by,it is also energy storage circuit; the "inverter" converts the DC power into the AC power. Then we used the Matlab / Simulink to build an AC-DC-AC Frequency Control System Simulation Model. Through the test of the AC-DC Frequency Control System to pay the basic working principle and working characteristics, we not only had a deeper understanding of the role,but also had a certain degree of understanding about the harmonic AC-DC-DC Frequency Control System.
Key Words : AC-DC-AC variable requency systerm, rectifier, inverter, harmonics, simulation
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摘要 I
Abstract II
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32交直交变频调
速系统的基本原理及特性研究 7
系统的构成 8
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