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中华人民共和国教育部东北林业大学毕业设计设计题目：按转子磁链定向的矢量控制系统设计学生：黄建龙指导教师：李克新讲师学院：机电工程学院专业：电气工程及其自动化2007级3班2011年6月按转子磁链定向的矢量控制系统设计摘要本文在对交流异步电动机坐标变换原理的概念，异步电动机的数学模型和在不同坐标系上的数学模型表达方程式介绍的基础上，指出了异步电动机模型多变量、强耦合非线性的特点，介绍了SVPWM空间矢量变频调速技术，并对基于高速数字信号处理器（DSP）的交流电动机按转子磁链定向的矢量控制调速系统进行了研究。本设计完成了基于TMS320F2812DSP的交流电机按转子磁链定向的矢量控制系统设计。在系统总体设计方面，系统由功率电路、控制系统及辅助电路组成。功率电路包括整流电路、直流中间电路、逆变电路以及驱动电路等组成；控制电路由F2812芯片及其外围电路组成，用来完成矢量控制核心算法、SVPWM产生、相关电压电流的检测量处理等功能；辅助电路由开关电源、串行通信电路等组成，以实现给系统提供多路直流电源以及上位机的监控等功能。系统硬件电路主要是由主电路、驱动电路、微控制电路、检测电路、信号采集与故障综合电路等组成；软件程序主要由主程序、中断程序以及键盘程序等组成。关键字：SVPWM；矢量控制；磁链定向；DSPTheDesignofOrientatedbytheRotorFluxVectorControlSystemAbstractInthispaper,weintroducestheacinductionmotorconcept,theprincipleofcoordinatetransformationofasynchronousmotorindifferentreferenceframesmathematicalmodelandmathematicalmodeloftheexpressequations,andpointedoutthecharacteristicsasynchronousmotormodelmultivariableandstrongcouplingnonlinearcharacteristics,andintroducedtheSVPWMspacevector,andthetechnologyoffrequencyconversionbasedonhighspeeddigitalsignalprocessor(DSP)accordingtotheacmotorrotorfluxvectorcontrolspeedcontrolsystemisstudied.ThisdesigncompletedthedesignofacmotoraccordingtorotorfluxvectorcontrolsystembasedonTMS320F2812DSP.Inthedesignofthewholesystem,thissystemconsistsofpowercircuit,auxiliarycircuitandcontrolsystem.ThePowercircuitincludesrectifiercircuit,dcintermediatecircuit,invertercircuitsanddrivecircuitetc;ControlcircuitiscomposedofF2812chipanditsperipheralcircuit,tocompletevectorcontrolcorealgorithm,SVPWMproduction,relatedvoltagecurrentdetectionquantityprocessingfunction;Auxiliarycircuitbyswitchingpowersupply,Serialcommunicationcircuitetc,soastorealizethesystemtoprovidemulti-channeltodcpowersupplyandPCmonitoring,andotherfunctions.Thehardwarecircuitismainlycomposedofmaincircuit,drivecircuit,microcontrolcircuit,detectioncircuit,signalacquisitionandfaultintegratedcircuitetc;Softwareprogrammainlybythemainprogram,interruptionprogramandkeyboardprogrametc.Keyword:SVPWM;Vectorcontrol;Flux;DSP目录摘要Abstract1.绪论..........................................................................................................................................11.1矢量控制技术的发展现状...................................................................................................11.1.1交流电动机调速技术的发展现状....................................................................................11.1.2矢量控制技术的发展现状...............................................................................................21.2矢量控制的思想及其优点..................................................................................................31.2.1矢量控制的基本思想.......................................................................................................31.2.2矢量控制的优点...............................................................................................................42.矢量控制技术的基本原理......................................................................................................52.1异步电动机的动态数学模型...............................................................................................52.1.1三相异步电动机的物理模型...........................................................................................52.1.2三相异步电动机的动态数学模型...................................................................................52.1.3SVPWM基本原理.............................................................................................................72.2矢量控制的基本原理.........................................................................................................102.2.1三相—两相静止坐标系变换(3/2变换).......................................................................112.2.2两相—两相旋转变换（2s/2r变换）............................................................................112.3按转子磁链定向的矢量控制技术的实现........................................................................132.3.1电流闭环控制方式..........................................................................................................132.3.2转矩控制方式.................................................................................................................142.3.3转子磁链的计算.............................................................................................................142.4系统的总体设计................................................................................................................153．系统硬件电路设计.....................................................................................................173.1核心芯片选择与介绍........................................................................................................173.2系统主电路的设计............................................................................................................183.3控制电路及其外围电路设计............................................................................................203.3.1PWM电路的设计以及驱动电路....................................................................................203.3.2电流采样电路的设计.....................................................................................................213.3.3电压检测电路..............