196MCSPWM变频调速系统毕业论文.doc

河南理工大学毕业设计（论文）说明书 SPWM变频调速系统 摘要：变频调速是交流调速中的发展方向。变频调速也有多种方法，本文对目前研究领域相当活跃的正弦波脉宽调制技术(SPWM)的变频调速作了一定的研究，并进行了实践。异步电动机的调速原理是研究控制算法的基石，因文首先介绍了异步电动机的调速特性，从而展开介绍SPWM变频调速的理论基础.包括变频调速控制思想的由来，控制方法的可行性。变频调速的控制算法也有许多，本文对目前大部分通用变频器所采用的控制算法——恒压频比控制，给出了完整的硬件电路设计和软件程序流程设计。本文采用了Intel8OC196MC十六位单片机作为控制电路的CPU，采用该单片机的控制系统是本设计的硬件核心部分。因此本文先简单的介绍此单片机与该设计相关的特性，继而介绍本系统的硬件设计和软件设计。 关键词:变频器;恒压频比控制;正弦波脉宽调制:8OC196MC单片机。 Abstract：Variable- speed drive system is the direction of AC Variable-speedd rive system.There are many modes for frequency-varied speed -regulated. In this paper, theauthor studied and analyzed one of the control way which is very searched by many people,and it is a constant volts/hertz ratio control technology The mathematical model of AC induction motor is the base of controlAlgorithmic for studying.This paper introduce the AC induction motorfirstly,then introduce the theoretical base of SPWM variable-speed drive. The theoretical base gives its idea and feasibility. In this design,the single chip micorcomputer-80C196MC is used.This microcomputer is very suitable for motors controlling.The Control circuit including80C196MC is the core of this system.There are hardware and software Designs in this paper.and the software design is the emphasis. TOC \o 1-3 \h \u HYPERLINK \l _Toc2682 一 绪论 PAGEREF _Toc2682 3 HYPERLINK \l _Toc24158 1.1研究的现状 PAGEREF _Toc24158 3 HYPERLINK \l _Toc24223 1.1.1引言 PAGEREF _Toc24223 3 HYPERLINK \l _Toc17411 1.1.2变频调速发展的条件 PAGEREF _Toc17411 4 HYPERLINK \l _Toc5010 1.1.3变频器的发展方向 PAGEREF _Toc5010 5 HYPERLINK \l _Toc20258 1.2论文研究的目的和意义 PAGEREF _Toc20258 6 HYPERLINK \l _Toc24939 1.3本文主要内容和结构安排 PAGEREF _Toc24939 6 HYPERLINK \l _Toc20628 二 恒压频比控制的SPWM变频系统的分析 PAGEREF _Toc20628 7 HYPERLINK \l _Toc29238 2.1变频调速基本原理 PAGEREF _Toc29238 7 HYPERLINK \l _Toc23661 2.2变频调速控制方式分析 PAGEREF _Toc23661 7 HYPERLINK \l _Toc6951 2.3 SPWM逆变技术 PAGEREF _Toc6951 9 HYPERLINK \l _Toc26314 2.3.1静止式SPWM间接变压变频装置 PAGEREF _Toc26314 9 HYPERLINK \l _Toc11418 2.3.2 SPW