【正文】 iable frequency motor speed control significance. Analysis of the exchange of a variety of speed control method is derived VVVF AC Drive the best way to conclusion. Introduced the AC variable frequency speed regulation system of the basic principles, applications, including the working principle of frequency converter and its control strategy and speed control. Studied the mechanical characteristics of the motor frequency, frequency analysis of harmonic power losses and efficiency of the electrical impact. Frequency of the electromagic motor design, and select a type of variable frequency electromagic motor part of the calculation. And discussed at different frequencies of the main parameters of the electrical frequency changes. Keywords： Frequency Control System； Inverters ； Variable Frequency Motor ；Electromagic Design 三相交流變頻電動(dòng)機(jī)設(shè)計(jì)與結(jié)構(gòu)分析 1 第 1 章 緒論 在工 業(yè)、農(nóng)業(yè)、交通運(yùn)輸、國(guó)防軍事設(shè)施以及日常生活中廣泛地應(yīng)用著電機(jī)傳動(dòng)。探討了變頻調(diào)速電機(jī)的電磁設(shè)計(jì)方案，并選 取一種型號(hào)的變頻電機(jī)進(jìn)行電磁部分的計(jì)算。介紹了交流變頻調(diào)速系統(tǒng)的基本原理及其應(yīng)用，其中包括變頻器的工作原理及其控制策略和調(diào)速控制方式。 湖南工程學(xué)院畢業(yè)設(shè)計(jì)論文 目 錄 摘 要 ..................................................................................................................................... I Abstract ................................................................................................................................. II 第 1 章 緒論 .........................................................................................................................1 本課題的提出和意義 ...............................................................................................1 本課題的主要任務(wù) ...................................................................................................2 第 2 章 變頻調(diào)速系統(tǒng)的基本原理 .....................................................................................3 交流調(diào)速技術(shù)的類別 ...............................................................................................3 變極對(duì)數(shù)調(diào)速方法 ..........................................................................................3 串級(jí)調(diào)速方法 ..................................................................................................3 變頻調(diào)速方法 ..................................................................................................4 轉(zhuǎn)子串電阻調(diào)速方法 ......................................................................................4 定子調(diào)壓調(diào)速方法 ..........................................................................................4 電磁調(diào)速電動(dòng)機(jī)調(diào)速方法 ..............................................................................4 液力耦合器調(diào)速方法 ......................................................................................5 變頻調(diào)速的基本原理 ...............................................................................................5 變頻器的基本原理 ..........................................................................................5 變頻器控制策略和調(diào)速控制方式 ..................................................................7 交流變頻調(diào)速系統(tǒng)的原理及特點(diǎn) ..................................................................8 變頻調(diào)速系統(tǒng)的應(yīng)用范圍 .....................................................................................10 第 3 章 變頻調(diào)速異步電動(dòng)機(jī)的特點(diǎn) ...............................................................................12 變頻器供電的異步電動(dòng)機(jī)的機(jī)械特性 .................................................................12 恒電壓 /頻率比控制時(shí)的機(jī)械特性 ...............................................................12 最大轉(zhuǎn)矩保持恒定的控制方式 ....................................................................13 輸出功率保持恒定的控制方式 ....................................................................15 諧波對(duì)電機(jī)損耗和效率的影響 .............................................................................17 附加銅損耗 ....................................................................................................17 附加鐵損耗 ....................................................................................................18 附加雜散損耗 ................................................................................................19 諧波對(duì)電機(jī)效率的影響 ................................................................................19 變頻調(diào)速異步電動(dòng)機(jī)的設(shè)計(jì)特點(diǎn) .........................................................................20 變頻電源供電情況下電動(dòng)機(jī)應(yīng)用所面臨的問(wèn)題 ........................................20 電磁設(shè)計(jì) ........................................................................................................21 湖南工程學(xué)院畢業(yè)設(shè)計(jì)論文 結(jié)構(gòu)設(shè)計(jì) ........................................................................................................22 變頻調(diào)速電動(dòng)機(jī)的設(shè)計(jì)特點(diǎn) ........................................................................22 變頻調(diào)速異步電動(dòng)機(jī)的應(yīng)用范圍 .........................................................................23 第 4 章 變頻調(diào)速電動(dòng)機(jī)的電磁設(shè)計(jì) ..................................................................24 概述 .........................................................................................................................24 電磁方案設(shè)計(jì) .........................................................................................................26 頻率為 50Hz 時(shí)的電磁設(shè)計(jì)方案 .................................................................26 其他頻率時(shí)電磁參數(shù)的比較 ........................................................................42 電磁設(shè)計(jì)中的某些特殊考慮 .................................................................................47 結(jié)束語(yǔ) ...................................................................................................................................50 參考文獻(xiàn) ...............................................................................................................................51 致 謝 ...................................................................................................................................52 三相交流變頻電動(dòng)機(jī)設(shè)計(jì)與結(jié)構(gòu)分析 I 摘 要 簡(jiǎn)要的描述了交流變頻調(diào)速電機(jī)的