華中科技大學(xué)電氣電機(jī)學(xué)課程設(shè)計(jì)報(bào)告

PAGE8電氣電氣學(xué)科大類2010級(jí)電機(jī)學(xué)課程設(shè)計(jì)姓名學(xué)號(hào)指導(dǎo)教師日期最終成績(jī)?cè)u(píng)閱人目錄題目及要求3二、任務(wù)分工3三、設(shè)計(jì)過程3四、設(shè)計(jì)結(jié)果4五、實(shí)驗(yàn)總結(jié)及感想11六、參考書目12二、題目及要求三相異步電動(dòng)機(jī)，Y接接法，頻率50Hz?；緮?shù)據(jù)如下表：Za1323800.8893%602101470表1.三相異步電機(jī)參數(shù)1.設(shè)計(jì)三相雙層繞組，畫繞組展開圖。2.編程計(jì)算單相和三相磁動(dòng)勢(shì)基波和各次諧波（諧波次數(shù)要求計(jì)算到100次以上）。列表顯示計(jì)算結(jié)果：諧波次數(shù)、短距系數(shù)、分布系數(shù)、單相磁動(dòng)勢(shì)振幅、單相磁動(dòng)勢(shì)振幅占基波振幅的百分比、合成磁動(dòng)勢(shì)幅值、合成磁動(dòng)勢(shì)幅值占合成基波的百分比。3.根據(jù)單相和三相磁動(dòng)勢(shì)的表達(dá)式，畫出磁動(dòng)勢(shì)曲線。二、任務(wù)分工三、設(shè)計(jì)過程1.計(jì)算極對(duì)數(shù)根據(jù)式應(yīng)該略大于1470轉(zhuǎn)/min，則2.槽距角（相鄰兩槽之間的機(jī)械角度）槽距電角（相鄰兩槽之間的電角度）3.極距節(jié)距選為y1=12<15為短距，且y1=45τ，可使消除4.每極每相槽數(shù)5.單相繞組總串聯(lián)匝數(shù)N=設(shè)計(jì)結(jié)果1．繞組展開圖圖1.三相異步電機(jī)繞組展開圖2．計(jì)算單相繞組的磁動(dòng)勢(shì)基波和各次諧波（諧波次數(shù)要求計(jì)算到100次以上）用C語言編程計(jì)算#definePI3.1415926#definePP4#include<math.h>#include<iostream>#include<iomanip>usingnamespacestd;doublePn=132,Un=380,cosFn=0.88,Yita_n=0.93;intZ=60,Nc=10,m=3,a=2,nn=1470,p=PP/2;struct{ doublekyv,kqv,F_Av,Fv; }AAA[101];doublea1,t,y,I; intq,N;intmain(){a1=(p*360)/Z;t=Z/(2*p);y=(double)int(t*5/6);q=Z/(2*p*m);N=(Z*Nc)/(m*a);I=Pn/(sqrt(double(3))*Un*cosFn*Yita_n);cout<<"2p="<<2*p<<"\tt="<<t<<"\ty1="<<y<<endl;cout<<"v\tkyv\tkqv\tF_Av/A\tkA\tFv/A\tk"<<endl;for(intv=1;v<=200;v=v+2){ AAA[v].kyv=sin(y/t*PI/2*v); //短距系數(shù) AAA[v].kqv=sin(q*a1*v/2)/(q*sin(a1*v/2)); //分布系數(shù) doublekNv=AAA[v].kqv*AAA[v].kyv; AAA[v].F_Av=2*sqrt(double(2))/(PI*v*p)*N*kNv*I;//單相振幅 doublekA=AAA[v].F_Av/AAA[1].F_Av*100; //單相占基波百分比 switch(v%6){ case3:AAA[v].Fv=0; break; case5: case1: AAA[v].Fv=AAA[v].F_Av*3/2; break; } //合成振幅 doublek=AAA[v].Fv/AAA[1].Fv*100; //合成占基波百分比 cout<<setw(4)<<v<<"\t"<<fixed<<setprecision(3)<<abs(AAA[v].kyv)<<"\t"<<abs(AAA[v].kqv)<<"\t"<<abs(AAA[v].F_Av)<<"\t" <<setprecision(2)<<abs(kA)<<"%\t"<<setprecision(3)<<abs(AAA[v].Fv)<<"\t"<<setprecision(2)<<abs(k)<<"%"<<endl; }}數(shù)據(jù)表格表2.單相繞組的磁動(dòng)勢(shì)基波和各次諧波3.畫單相磁動(dòng)勢(shì)曲線用matlab編程tao=15;%極距y1=12;arfa1=2*2*pi/60;%槽距電角q=5;N=60;p=2;U=380;Pn=132000;cosfai=0.88;%功率因數(shù)角yn=0.93;%效率I=Pn/(sqrt(3)*U*cosfai*yn);i=1;kyv=zeros(1001,1);kqv=zeros(1001,1);knv=zeros(1001,1);Fay=zeros(1001,1);%各次諧波磁動(dòng)勢(shì)F=zeros(1001,1);%諧波磁動(dòng)勢(shì)與基波磁動(dòng)勢(shì)之比sita=[pi/2:0.001:5*pi/2];f1=0;f2=0;f3=0;forv=1:2:2001%基波和高次諧波kyv(i,1)=sin((v*y1*pi)/(2*tao));kqv(i,1)=sin(q*arfa1*v/2)/(q*sin(arfa1*v/2));knv(i,1)=kyv(i,1)*kqv(i,1);Fay(i,1)=2*sqrt(2)*N*knv(i,1)*I/(pi*v*p);f1=f1+Fay(i,1)*cos(v*sita);f2=f2+Fay(i,1)*cos(v*sita-v*2*pi/3)*cos(-2*pi/3);f3=f3+Fay(i,1)*cos(v*sita-v*4*pi/3)*cos(-4*pi/3);i=i+1;endplot(sita,f1,'b');grid;axis([pi/25/2*pi-60006000]);%橫縱坐標(biāo)變化范圍title('單相繞組磁動(dòng)勢(shì)曲線')holdon;plot(sita,f2,'r');plot(sita,f3,'g');plot(sita,f1+f2+f3,'k');%合成磁動(dòng)勢(shì)曲線title('三相合成磁動(dòng)勢(shì)曲線');grid;axis([pi/25/2*pi-1000010000])%橫縱坐標(biāo)變化范圍圖2.單相磁動(dòng)勢(shì)曲線1(1001次諧