毕业设计（论文）-三相异步电动机变频调速的原理及其仿真_精品.doc

目录 TOC \o 1-2 \h \z \u HYPERLINK \l _Toc292912227 摘 要 PAGEREF _Toc292912227 \h I HYPERLINK \l _Toc292912228 Abstract PAGEREF _Toc292912228 \h II HYPERLINK \l _Toc292912229 1概述 PAGEREF _Toc292912229 \h 1 HYPERLINK \l _Toc292912230 1.1电机概述 PAGEREF _Toc292912230 \h 2 HYPERLINK \l _Toc292912232 1.2变频器概述 PAGEREF _Toc292912232 \h 2 HYPERLINK \l _Toc292912233 1.3三相异步电动机变频调速原理及其种类 PAGEREF _Toc292912233 \h 3 HYPERLINK \l _Toc292912235 2 三相异步电动机变频调速仿真模型 PAGEREF _Toc292912235 \h 5 HYPERLINK \l _Toc292912236 2.1 问题提出及分析 PAGEREF _Toc292912236 \h 5 HYPERLINK \l _Toc292912237 2.2 SIMULINK仿真模型 PAGEREF _Toc292912237 \h 6 HYPERLINK \l _Toc292912238 2.3未变频时仿真结果 PAGEREF _Toc292912238 \h 8 HYPERLINK \l _Toc292912239 2.4变频时仿真结果（基频以下调速） PAGEREF _Toc292912239 \h 8 HYPERLINK \l _Toc292912240 2.5变频时仿真结果（基频以上调速） PAGEREF _Toc292912240 \h 9 HYPERLINK \l _Toc292912241 2.6变极调速 PAGEREF _Toc292912241 \h 10 HYPERLINK \l _Toc292912242 2.7调压调速 PAGEREF _Toc292912242 \h 11 HYPERLINK \l _Toc292912243 2.8关于变频调速的总结 PAGEREF _Toc292912243 \h 12 HYPERLINK \l _Toc292912244 参考文献 PAGEREF _Toc292912244 \h 14 HYPERLINK \l _Toc292912245 致 谢 PAGEREF _Toc292912245 \h 15 摘 要 由于变频运行下三相异步电动机调速系统具有节能的重要优点,已在国内外工业生产和日常生活许多领域得到越来越广泛地应用。目前在变频调速系统中,随着电力电子技术及变频调速技术的迅速发展,交流调速技术日新月异，新的控制策略不断涌现，这也使得交流调速开始全面取代直流调速。在交流调速技术中，交流变频调速以其优异的调速性能，高效节能和广泛的应用范围等特点而被国内外人为是最有前途的调速方式。 关键词：变频；三相异步电动机；调速 ABSTRACT With the important merit of saving energy for the timing system of three-phase induction motor under the supply of frequency converter, it has been widely used in more and more fields. Now, with the rapid development of power electronics and frequency-conversion technology.the technology of adjusting speed of AC induction electromotor changes quickly and new control method appears ceaselessly. DC electromotor by the AC induction electromotor is replaced by the AC induction electromotor in wide range. The AC variable frequency speed regulation is generally acknowledged by the home and abroad tha