euavxoc转速开环变频调速综合分析说明.doc

、 .~ 我们‖打〈败〉了敌人。 　　②我们‖〔把敌人〕打〈败〉了。ABSTRACT It is simple because of the structure to exchange the asynchronous electrical machinery , the volume is small, weight is light, The price is cheap ,it is convenient to be safeguarded and wait for the characteristic, used widely in the production and life .Compared with other electrical machineries ,the occupation rate of market of exchanging the asynchronous electrical machinery occupies the first place throughout. However ,for a long time, the speed of adjusting of exchanging the asynchronous electrical machinery is a problem not easy to solve throughout .Until the seventies of the 20 the century, because of the production of the computer ,and the production of the new-type and fast electronic element of the electric power in the past 20 years, Make and exchange to adjust quick to perhaps, and receive fast popularization asynchronous motors just. At present, exchanging the asynchronous motors and adjust the speed and was used in the numerical control lathe extensively systematically ,Air blower, the type of pump, conveying belt, Unless give material system ,it wait for air conditioners equipment, electric power source or sport source, And get up and save the electric energy , improve the automation of the equipment, improve the good results of the product quality and quality. The asynchronous motors prevailing now is adjusted and controls the method and divide into two kinds rapidly , Variable voltage variable frequence and adjusts speed and vector to control the law. The former is relatively simple when controlling the method, have development experience for more than 20 years ,there are many ones that so used . Most converters selling on the market at present all adopt this kind of control method. Keywords: Asynchronous motor ，Matlab ，Variable voltage variable frequence 目录 摘要 I ABSTRACT II 目录 III 前言 4 1 绪论 5 1.1 交流电机调速概论 5 1.2 交流调速技术的发展历史 5 1.3 交流调速技术的发展现状和趋势 6 1.4 本章小结 8 2异步电动机变频调速系统 9 2.1变频调速概述 9 2.2 静止式变频装置