基于MATLAB的異步電動(dòng)機(jī)仿真

1、-. z.課程報(bào)告COURSE REPORT課程名稱: 課程號(hào): 授課教師: *：*：西木小卒所屬：上大桂樹林基于MATLAB的異步電動(dòng)機(jī)仿真電機(jī)仿真模型一臺(tái)三相六機(jī)鼠籠式異步電動(dòng)機(jī)，定子繞組為Y型連接，額定電壓為UN=380V，額定轉(zhuǎn)速nN=975r/min，電源頻率f1=50Hz，定子電阻R1=2.08，定子漏電抗*1=3.12，轉(zhuǎn)子電阻折合值 QUOTE =1.53，轉(zhuǎn)子漏電抗折合值 QUOTE =4.25。要求：繪制以上參數(shù)電動(dòng)機(jī)的固有機(jī)械特性曲線、定子串電阻人為特性曲線、電子串電抗人為特性曲線、轉(zhuǎn)子串電阻人為特性曲線、降電壓人為特性曲線；給出仿真源代碼。2. 仿真代碼實(shí)現(xiàn)clccle

2、arm1=3;%電機(jī)相數(shù)U1=220;%額定定子相電壓n1=-1000,1000;%兩個(gè)相的同步轉(zhuǎn)速,+為規(guī)定正相，-為反相p=3;%電機(jī)極對(duì)數(shù)f1=50;%輸入電流頻率r1=2.08;%定子側(cè)電阻r2=1.53;%轉(zhuǎn)子側(cè)電阻折合值w1=2*pi*f1/p;%電機(jī)同步角速度*1=3.12;%定子側(cè)電抗*2=4.25;%轉(zhuǎn)子側(cè)折合電抗s=-1:0.001:1;%設(shè)定轉(zhuǎn)差率，是畫圖的關(guān)鍵自變量ns=-1,1;%用來標(biāo)定轉(zhuǎn)矩的方向，規(guī)定ns=1為正，-1為反%繪制定子串電阻前的固有機(jī)械特性曲線figure(1);for i=1:length(n1); n=n1(i)*(1-s);%計(jì)算轉(zhuǎn)速 T=ns

3、(i)*(m1*p*U12*r2)./s./(w1.*(r1+r2./s).2+(*1+*2)2);%計(jì)算轉(zhuǎn)矩 plot(T,n,-); if i=1 te*t(ma*(T),800,strcat(r1=,num2str(r1),Omega),FontSize,9,Color,black); %曲線標(biāo)注位置設(shè)置，每條曲線的標(biāo)注橫軸上對(duì)齊其Tm以便于區(qū)分，縱坐標(biāo)無嚴(yán)格限制 end hold on;end*label(電磁轉(zhuǎn)矩itT/(Ncdotm);ylabel(轉(zhuǎn)速itn/(r/min);title(定子串電阻的機(jī)械特性曲線)grid on;hold on;%繪制定子串電阻人為機(jī)械特性曲線r1

4、p=r1;str_y=800;for i=1:length(n1);%繪制正反相序的波形圖， n=n1(i).*(1-s); for coef=1:3%三條人為曲線 r1p=r1p+1;%串電阻的步進(jìn)值 T1=ns(i)*(m1*p*U12*r2)./s./(w1.*(r1p+r2./s).2+(*1+*2)2); plot(T1,n,k-); hold on; if i=1 str=strcat(r1=,num2str(int16(r1p),Omega); str_y=str_y-150; te*t(ma*(T1),str_y,strcat(r1=,num2str(r1p),Omega),F

5、ontSize,9,Color,black); end endend%繪制降電壓前的固有機(jī)械特性曲線figure(2);for i=1:length(n1); n=n1(i)*(1-s); T=ns(i)*(m1*p*U12*r2)./s./(w1.*(r1+r2./s).2+(*1+*2)2); plot(T,n,-); if i=1 te*t(ma*(T),800,strcat(U1=,num2str(int16(U1),V),FontSize,9,Color,black);end hold on;end*label(電磁轉(zhuǎn)矩itT/(Ncdotm);ylabel(轉(zhuǎn)速itn/(r/min

6、);title(降低定子電壓的機(jī)械特性曲線)grid on;hold on;%繪制降電壓人為機(jī)械特性曲線str_y=800;for i=1:length(n1); n=n1(i).*(1-s); for coef=0.75:-0.25:0.25; U1p=U1*coef; T1=ns(i)*(m1*p*U1p2*r2)./s./(w1.*(r1+r2./s).2+(*1+*2)2); plot(T1,n,k-); if i=1 str=strcat(U1=,num2str(int16(U1p),V); str_y=str_y-150; te*t(ma*(T1),str_y,str,FontSi

7、ze,9,Color,black); end hold on; endend%繪制定子串電抗前的固有機(jī)械特性曲線figure(3);for i=1:length(n1); n=n1(i)*(1-s); T=ns(i)*(m1*p*U12*r2)./s./(w1.*(r1+r2./s).2+(*1+*2)2); plot(T,n,-); if i=1 te*t(ma*(T),800,strcat(*1=,num2str(*1),Omega),FontSize,9,Color,black); end hold on;end*label(電磁轉(zhuǎn)矩itT/(Ncdotm);ylabel(轉(zhuǎn)速itn/(

8、r/min);title(定子串電抗的機(jī)械特性曲線)grid on;hold on;%繪制定子串電抗的人為機(jī)械特性曲線*1p=*1;str_y=800;for i=1:length(n1); n=n1(i).*(1-s); for coef=1:3 *1p=*1p+1.0; T1=ns(i)*(m1*p*U12*r2)./s./(w1.*(r1+r2./s).2+(*1p+*2)2); plot(T1,n,k-); if i=1 str=strcat(*1=,num2str(*1p),Omega); str_y=str_y-150; te*t(ma*(T1),str_y,strcat(*1=,

9、num2str(*1p),Omega),FontSize,9,Color,black); end hold on; endend%繪制轉(zhuǎn)子串電阻前的固有機(jī)械特性曲線figure(4);for i=1:length(n1); n=n1(i)*(1-s); T=ns(i)*(m1*p*U12*r2)./s./(w1.*(r1+r2./s).2+(*1+*2)2); plot(T,n,-); if i=1 te*t(ma*(T),800,strcat(r2=,num2str(r2),Omega),FontSize,9,Color,black); end hold on;end*label(電磁轉(zhuǎn)矩itT/(Ncdotm);ylabel(轉(zhuǎn)速itn/(r/min);title(轉(zhuǎn)子串電阻的機(jī)械特性曲線)grid on;hold on;%繪制轉(zhuǎn)子串電阻的人為機(jī)械特性曲線r2p=r2;str_y=800;for i=1:length(n1); n=n1(i).*(1-s); for coef=1:3 r2p=r2p+0.75; T1=ns(i)*(m1*p*U12*r2p)./s./(w1.*(r1+r2p./s).2+(*1