电机与拖动基础答案 刘启新.doc

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1、第一章21•解：Pn=t/.vx/yx1O-3xt7.v_厲伙W)X1O3UnIn17x1000220x0.85=90.94P]N=[/vxZvX10-3=220x90.9x10-3=20KW24.解:I)心=5xg=220x80=17600"2)厲=片“x%=17600x0.85=14960"3)^=Plv-Pv=2640WZ4)Pd也=80"0.1=640W5)=545.05W6)化〃=0.01x£v=149.6W7)P,n+Pre=^P-Pen-Pad=1850WZ25.解：Tv(TV•m)=9550-室KW)=9550x

2、旦-=54.127V•m「)/tv(r/min)30002)方法一Uf220It=——==1.212AzRf181.55-叽=220-87.69x0.114=。。了300088.9-1.212=87.69A.vTem=CT^Ia=9.55Ce^NIa=9.55x0.07x87.69=58.627V-m方法二=J-Pn=220x88.9-17000=2558WPm+PFe+Pad二HP-5-PCUJ=^P-I：R°-IfKf=2558-87.692xO.114-1.2122x181.5=1414.73WT.(N-m)=9.55心=

3、9.55/虫=4.57V•mnnTem=T2+7；=Tn+Tq=54.12+4.5=58.62^-m7mP/kw)xl033)SvxAvxl00%=s^xl00%=86-92%eg2200.20361080/7min28.解:1)2)3)4)珈5)9550囁i883.65(l=I科一I『=255-5=250AST代=440-250x0.078=。5005Tem=CT^I(l=9.55Ce①屛“=9.55x0.841x250=2007.88/V•mf/，v440./?n===523.2/7minCM0.841un=—CO竝込/=5

4、232一仝±11x250=470.3厂/minC亦0.841第二章15.(2)(3)1(110x20.1—1.75x10')20.120.571QC旅=57=220.1x0.571=o068C「0N=9.55Cc0n=0.649人1101450zzn===1618r/minq久0.068Gn=Ct0Mn=0.649X20」=13.04Nm固有特性两点坐标为：A点(厂呦=°，〃o=1618r/min)B点(G=13.04Nm,n=/?N=1450r/min)cmRn气7]Cc矢，a=1618~0.068x°-5x20-1"15j4

5、r1m,n1_1'220x53.7-10x10^2[&丿_2(53，JO.315QRa16.(1)2Z.7B5=0.0677(n0-^=(1618-1530)^=10.5A“NCt0n=9・55Cc0n=0.64653000(3)(4)n一50C"n0=_Jegn=5-叭=E+Cui==529QCt处0.0677x0.6465*-^-=325017min0.06770.3150.0677x0.6465~7197cm3250-7.197Tcm0.315+20九=3250-52.9為C伸7C0n0.0677=1625'7mm人=佃一

6、“)警=(1618—1530)將=10.5AKqU.J/1<•n=1625-7.1977vlil2205=~C^=0.0677x0.8=4063r7min0.315卩',=—-C.CT^20.0677X0.6466x0.82n=4063-11.25Tcm17.11.25/st(1)(2)2st1.5/n=1.5x207.5=311.25A19.EaN=—一ZN/?a=220-110x0.12=206.8VAnax=-2.5ZN=-2.5x110=-275ARd二—鱼—&=-^^-0.12=0.6320/喰—27520.铲鬻“17

7、2人220C/n7?n=———==1279r/minC"n0.1723r0]2n=-n.1=-1279——-—xll0=-1356r/minCn0.1723n-+^adj11-n0r/7a⑵Cc氷二S+®)xCc0nr"_人3=(-1500+1277)x0.1723_0J2=0226Q-11021.-久=5—^=220-64x0.296=0.294(1)68522Rarn=-nQ1—人gUn心C/nC/n32200.296“X0.3X640.2940.294-748-19:-767r/min_，NJ-1.2x685+748)

8、x0.294_0j296=0j837Q-0.3x64可用串电阻方法0・5〃n=342.5r/min342.5=748--。药呼金x0.3x179.70.2935x2.803心=5.91G*5-皿=220—54x0.5“931000Ct0n=CC^NX9.55=1