毕业设计论文-同步电机模型的MATLAB仿真

毕业设计（论文）题目同步电机模型的MATLAB仿真同步电机模型的MATLAB仿真摘要采用电力电子变频装置实现电压频率协调控制，改变了同步电机历来的恒速运行不能调速的面貌，使它和异步电机一样成为调速电机大家庭的一员。本文针对同步电机中具有代表性的凸极机，在忽略了一部分对误差影响较小而使算法复杂度大大增加的因素（如谐波磁势等），对其内部电流、电压、磁通、磁链及转矩的相互关系进行了一系列定量分析，建立了简化的基于abc三相变量上的数学模型，并将其进行派克变换，转换成易于计算机控制的d/q坐标下的模型。再使用MATLAB中用于仿真模拟系统的SIMULINK对系统的各个部分进行封装及连接，系统总体分为电源、abc/dq转换器、电机内部模拟、控制反馈四个主要部分，并为其设计了专用的模块，同时对其中的一系列参数进行了配置。系统启动仿真后，在经历了一开始的振荡后，各输出相对于输出时间的响应较稳定。关键词：同步电机d/q模型MATLABSIMULINK仿真。TheSimulationPlatformofSynchronousMachinebyMATLABAbstract:Theutilizationoftransducerrealizesthecontrolofvoltage’sfrequency.ItchangesthesituationthatSynchronousMachineisalwaysrunningwithconstantspeed.JustlikeAsynchronousMachine,Synchronousmachinecanalsobeviewedasamemberofthetimingmachine.ThisthesisintendstoaimatthetypicalsalientpolemachineinSynchronousMachine.Somequantitativeanalysisaremadeonrelationsofsalientpolemachineamongcurrent,voltage,flux,fluxlinkageandtorque,undertheconditionthatsomefactorssuchasharmonicelectricpotentialareignored.Thesefactorshavelessinfluenceonerrorbutgreatlyincreasecomplexityofarithmetic.Thus,simplifiedmathematicmodelisestablishedonthebasisofa,b,cthreephasevariables.BytheParktransformation,thismodelistransformedtod,qmodelwhich,iseasytobecontrolledbycomputer.Simulinkisusedtomaskingandlinkingallthepartsofthesystem.Thesystemcanbedividedintofourmainparts,namelypowersystem,abc/dqtransformation,simulationmodelofthemachineandfeedbackcontrol.Specialblocksaredesignedforthefourpartsandaseriesofparametersinthesepartsareconfigured.Theresultsofsimulationshowthateachoutputhasasatisfactoryresponsewhenthereisdisturbance.KeyWords:SynchronousMachineSimulationd/qModelMATLABSIMULINK目录第1章引言............................................................................................................................................11.1引言................................................................................................................................................11.2同步电机概述.................................................................................................................................11.3系统仿真技术概述.........................................................................................................................21.4仿真软件的发展状况与应用.........................................................................................................21.5MATLAB概述...............................................................................................................................21.6SIMULINK概述...............................................................................................................................41.7小结............................................................................................................................................5第2章同步电机基本原理....................................................................................................................62.1理想同步电机.................................................................................................................................62.2ABC/DQ模型的建立.......................................................................................................................6第3章仿真系统总体设计..................................................................................................................103.1系统对象......................................................................................................................................103.2系统分块......................................................................................................................................103.3控制反馈环节................................................................................................................................11第4章仿真系统详细设计..................................................................................................................134.1总体设计......................................................................................................................................134.2具体设计......................................................................................................................................134.3控制反馈环节...............................................................................................................................16第5章系统仿真运行..........................................................................................................................175.1输出结果稳定情况.......................................................................................................................175.2小结..............................................................................................................................................20第6章结论..........................................................................................................................................21第7章致谢.........................................................................................................................................22参考文献.......................................