三相异步电机机械特性MATLAB仿真报告

评分：_________课程报告电机与拖动基础学院机自学院专业电气工程及其自动化学号15122204学生姓名张紫靓课程电机与拖动基础电机与拖动基础报告一、固有机械特性及降压Matlab程序如下：固有机械特性：U1=220;m=3;p=3;f1=50;R1=2.08;R20=1.53;X1=3.12;X20=4.25;s=-0.4:0.0001:1.5;n0=60*f1/p;n=n0-s*n0;T=(m*p*U1^2*R20./s)./(2*pi*f1*((R1+R20./s).^2+(X1+X20)^2));title('故有机械特性')xlabel('电动机转速n/(r/s)')ylabel('电动机转矩T/(N*M)')plot(T,n);plot(-T,-n);holdon;MATLAB仿真图像：降压：m=3;p=3;f1=50;R1=2.08;R20=1.53;X1=3.12;X20=4.25;s=0:0.0001:1.5;n0=60*f1/p;n=n0-s*n0;fork=1:3ifk==1;U1=220;elseifk==2;U1=200;elseU1=150;endendT=(m*p*U1^2*R20./s)./(2*pi*f1*((R1+R20./s).^2+(X1+X20)^2));title('故有机械特性')xlabel('电动机转速n/(r/s)')ylabel('电动机转矩T/(N*M)')plot(T,n);holdon;endMATLAB仿真图：二、定子串电阻程序：U1=220;m=3;p=3;f1=50;R20=1.53;X1=3.12;X20=4.25;s=0:0.0001:1.5;n0=60*f1/p;n=n0-s*n0;fork=1:3ifk==1;R1=2.08;elseifk==2;R1=5.08;elseR1=10.08;endendT=(m*p*U1^2*R20./s)./(2*pi*f1*((R1+R20./s).^2+(X1+X20)^2));title('故有机械特性')xlabel('电动机转速n/(r/s)')ylabel('电动机转矩T/(N*M)')plot(T,n);holdon;endMATLAB仿真图：三、定子串电抗：程序：U1=220;m=3;p=3;f1=50;R1=2.08;R20=1.53;X20=4.25;s=0:0.0001:1.5;n0=60*f1/p;n=n0-s*n0;fork=1:3ifk==1;X1=3.12;elseifk==2;X1=6.12;elseX1=10.12;endendT=(m*p*U1^2*R20./s)./(2*pi*f1*((R1+R20./s).^2+(X1+X20)^2));title('故有机械特性')xlabel('电动机转速n/(r/s)')ylabel('电动机转矩T/(N*M)')plot(T,n);holdon;endMATLAB仿真图：四、转子串电阻U1=220;m=3;p=3;f1=50;R1=2.08;X1=3.12;X20=4.25;s=0:0.0001:1.5;n0=60*f1/p;n=n0-s*n0;fork=1:5ifk==1;R20=1.53;elseifk==2;R20=3.53;elseifk==3R20=5.53;elseifk==4R20=7.53;elsek==5R20=10.53;endendendendT=(m*p*U1^2*R20./s)./(2*pi*f1*((R1+R20./s).^2+(X1+X20)^2));title('故有机械特性')xlabel('电动机转速n/(r/s)')ylabel('电动机转矩T/(N*M)')plot(T,n);holdon;endMATLAB仿真图：