交流电机调速毕业设计

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1、摘要最近几年，随着新型电力电子器件的不断涌现和计算机技术的飞速发展，高性能的交流电动机变频调速系统得到了广泛的应用，它的显著的节能效果和灵活的运行方式，给人们留下了深刻的印象。本论文首先论述了变频调速的基础技术，简述了它在我国的发展和应用以及今后在这方面应做的工作；其次对系统的主电路、控制电路、电气控制电路以及实现控制的软、硬件进行了系统地分析，并对调速系统的实施方案进行了论证。在此基础上，调速系统主电路采用了交-直-交型电路形式，并采用IGBT作为主电路的功率开关器件；根据SPWM波形的生成原理，从硬

2、件和软件上探讨了基于MA818，用于IGBT控制的数字化PWM波形产生器的实现方法；根据系统的设计要求，选择了转速负反馈控制，提高了系统的精度和稳定度；最后完成了相应的电气控制电路。经相关的实验及仿真波形分析，表明该系统满足预期的设计要求。关键词：交流调速变频调速IGBTSPWMMA818-44-AbstractRecentlyseveralyears,alongwiththenewelectricpowerelectronicdeviceunceasingemergenceandthecomputer

3、technologyrapiddevelopment,thehighperformanceexchangeelectricallyoperatedadaptablefrequencymodulationfastsystemobtainedthewidespreadapplication,hisremarkableenergyconservationeffectandthenimblemovementway,havemadetheprofoundimpressiontothepeopleFirst,the

4、basictechniqueofspeedcontrolbyfrequencyvariationisintroducedbriefly,andthenthedevelopmentandapplicationinourcountryissummarizedandweshoulddoinfuture;Second,themaincircuit、controlcircuit、electricalcontrolcircuitandsoftwareandhardwareofthecontroldeviceisan

5、alyzedsystematically.Basedontheforegoinganalyses,AC—DC—ACvoltagesourceinverter(VSI)andIGBTdevicesareselectedinthemaincircuit.AccordingtotheSPWMprofileproductionprinciple,hasdiscussedfromthehardwareandthesoftwarebasedonMA818,usesinIGBTthecontrolthedigitiz

6、edPWMprofileproducerrealizationmethod;Accordingtothesystemdesignrequest,haschosentherotationalspeednegativefeedbackcontrol,increasedthesystemprecisionandthestability;Finallyhascompletedthecorrespondingelectricitycontrolcircuit.Itisprovedbydesignexperimen

7、tsandsimulationwavesthatthisdesignaccordswiththeexpectablerequirements.Keywords：ACspeed-adjusting；Variance-frequencyspeed-adjusting；IGBT；SPWM；MA818-44-第一章前言..................................................................................................

8、...........51.1交流变频调速技术的发展与研究现状...................................................51.2变频调速技术的优点和发展方向....................................................51.3相关技术分析............................................................