中小型异步电动机的MATLAB计算程序

中小型异步电动机的MATLAB计算程序%%%%%%%%%%%%%%%%%%%%%%%%%第一部分额定数据和主要尺寸%%%%%%%%%%%%%%%%%%%%%%%%%

myflag1 = 1;

%myflag1 myflag1=1是三角形接法,myflag1=0是星

形接法

myflag2 = 0;

%myflag2 myflag2=1是双层槽绝缘占面

积,myflag2=0是单层槽绝缘占面积

myflag3 = 1;

%myflag3 myflag3=1是无径向通风道的铁心长

度,myflag3=0是定转子径向通风道不交错，其它是通

风道交错

myflag4 = 1;

%myflag4 myflag4=1是无径向通风道的净铁心长

度,myflag4=0是有径向通风道的净铁心长度

myflag5 = 2;

%myflag5 myflag5=1是双层线圈,myflag5=2是单层

线圈

myflag6 = 0;

%myflag6 myflag6=1是平底槽,myflag6=0是圆底槽myflag7 = 0;

%myflag7 myflag7=1是平底槽,myflag7=0是圆底槽myflag8 = 1;

%myflag8 myflag8=1是圆底槽,myflag8=0是半开口

平底槽,其它为开口平底槽

myflag9 = 1;

%myflag9 myflag9=1是半开口槽和半闭开口

槽,myflag9=0是开口槽

myflag10 = 1;

%myflag10 myflag10=1是单层线圈,myflag10=0是双

层线圈

myflag11 = 1;

%myflag11 myflag11=1是无径向通风道,myflag11=0

是有径向通风道

myflag12 = 3;

%myflag12 myflag12=1是双层叠绕组,myflag12=2单

层同心式,myflag12=3单层同心式(分组的）、交叉

式,myflag12=4 单层链式

myflag13 = 1;

%myflag13 myfalg13=1是无径向通风道,myflag13=0

是径向通风道

myflag14 = 4;

%myflag14 myflag14=1是二级防护式,myflag14=2是

四级及以上防护式,myflag14=3是二级封闭型自扇冷

式,myflag14=4是四级及以上封闭型自扇冷式

myflag15 = 1;

%myflag15 myflag15=1是半闭口槽,myflag15=0 是开

口槽

PN = 11000;

Un = 380; %额定电压f = 50; %频率cos_phi = 0.84;

eta_1 = 0.88;

m1 = 3;

p = 2; %极对数q1 = 3; %每极每相槽数%myflag1 myflag1=1是三角形接法，myflag1=0是星形接法。

switch myflag1

case 1

UN_phi = Un;

case 0

UN_phi = Un/sqrt(3);

end

Ikw = PN/(m1*UN_phi); %功电流Z1 = 2*m1*p*q1; %定子槽数Z2 = 26; %转子槽数Zp1=Z1/(2*p);

Zp2=Z2/(2*p); %定转子每极槽数KB_2 = 0.0108*log10(PN)-0.013*p+0.931; %满载电势标幺值alpha_p_1 = 0.68;

Knm_1 = 1.10;

Kdp1_1 = 0.96;

A_1 = 26000; %由参考文献［电机设计］图10-2 B_delta_1 = 0.67;

n_1 = 1450;

p_1 = KB_2*PN/(eta_1*cos_phi);

V = 6.1*1*p_1/(alpha_p_1*Knm_1*Kdp1_1*A_1*B_delta_1*n_1);

Lambda=1.4; %由参考文献［电机设计］表10-2 Dt1_1 = (2*p*V/(Lambda*pi))^(1/3);

Dt1__D = 0.64; %由参考文献［电机设计］表10-3 Dt1__D表示Dt1/D D1_1 = Dt1_1/(Dt1__D); %定子冲片外径D1 = D1_1;

Dt1 = D1*(Dt1__D);

lef = V/(Dt1^2); %铁心有效长度

lt = lef - 0.006;

delta = 0.3*(0.4+7*sqrt(Dt1*lef))*(1/10^3);

D2=Dt1-2*delta; %转子外径Dt2 = 0.06; %转子内径由转轴直径决定tou=pi*Dt1/(2*p); %极距t1= pi* Dt1/Z1; %定子齿距t2=pi*D2/Z2; %转子齿距bsk = 0.0145; %转子斜槽宽一般取一个定子齿距t1 alpha_1 = 1; %并联支路alpha_1为1 N_phi1_1 = (eta_1*cos_phi*pi*Dt1*A_1)/(m1*Ikw);

Ns1 = (m1*alpha_1*N_phi1_1)/Z1;

N_phi1 = Ns1*Z1/(m1*alpha_1);

J1_1=5.0; %定子电密I1_1 = Ikw/eta_1*cos_phi; %定子电流初步值NA = I1_1/(alpha_1*J1_1); %每相串联导体数用NA表示Nt1_1*Ac1_1 KI = 0.089; %查参考文献［电机设计］表10-10 alpha = p*2*pi/Z1;

Kd1=sin(q1*alpha/2)/(q1*sin(alpha/2)); %分布系数Kp1=1; %短距系数Kdp1=Kd1*Kp1; %绕组系数I2_1 = KI*I1_1*3*N_phi1_1*Kdp1/Z2; %转子导条电流IR_1=I2_1*Z2/(2*pi*p); %端环电流JR_1 = 2.1;

AR_1=IR_1/JR_1; %端环面积h=0.002; %槽锲b01 = 0.0038;

b11 = 0.0077;

bt1 = 0.00745;

bt2 = 0.01135;

h01 = 0.0008;

h11 = 0.0011;

h21 = 0.0152;

hs1 = 0.0211;

hs2 = 0.0289;

r21 = 0.0051;

r22 = 0.0024;

hs_1 = 0.0152; %定子槽型b02 = 0.001;

b12 = 0.0048;

h02 = 0.0005;

h12 = 0.0011;

h22 = 0.0249; %转子槽型As=(2*r21+b11)*(hs_1-h)/2+pi*r21*r21; %槽面积Delta_t = 0.0003;