三相异步电动机电力拖动系统的特性分析 三相异步电动机的机械特性 机械特性的实用公式 2r(+2) a实用公式 T 72+n2+(x+x2)] T s(r )2(r)2 +2FP2 (x+2)2+(x+x2) (1+sn) √2+(x+x2)2= r2 +-m+2 2 2+q +≥2 —+ 必有风大孚
三相异步电动机电力拖动系统的特性分析 Speed /Torque Curves Vocabulary power distribution 2. electromagnetical torque 3. breakdown torque=stalling torque 4. asymptotic s. abscissae 6, skew 7. full-pitch coil 必有风大孚
①三相异步电动机电力拖动系统的特性分析 Example A three-phase, 230V, 60Hz, 12kW, 4 pole wound induction motor has the following parameters expressed in $/phase R1=0095x1=0.68 x2=0.672xm=18.7 USing MATLAB, plot the electromechanical torque Tmech as a function of rotor speed in r/min for rotor resistances of r2=0.1.0.2.0.5.1.0 and 1.5Q 必有风大孚
你三相异步电动机电力瓶动系统的特性分析 elseif m==2 cIc r2=02 clear elseif m==3 V=230/sqr(3); r2=0.5 3 elseif m==4 =10: poles=4 lse fe=60 r2=1.5: rl=0.095 1=0.680: for n=1: 200 x2=0.672; s(n)=200; xm18.7; oncgas-4prfeipoles, 12=abs(vleqr(zleq+ *x2+r2/s(n))) ns=120° fe/poles; Tmech(n=nph12 2*r2 (s(n *omegas zleqj'xm(1+j*xl)/(1+j*(x1+xm); plot(pm, Tmech) r⊥c real(leg) ifm==1 xlcq=imag(zl哦; hold vlcqabs(v1◆◆am/(r1+j(x1+xm) nd for m=1: 5 if m=1 hold .xlabelrpm) 2=0.1 ylabel Tech)
二相些由动机由动玄体的些公析 100 90 70 20040060080010001200140016001800 rpm 有凤族大