电机拖动知识点

dNeNN12/USUN1N2N50010335103SIA14.29AA45.45AN1NU1N50010311103SI2NNU2N/US＝，UdN1N2N5000103SNUI1NA288.68AA458.22A3101031N5000103SI2NNU36.31032NI288.68AIdI1Np1N458.223IA264.55A2N32IF00E010势EEIR21IR。10112I，产生磁动势F；副绕组流过电流I，产生磁动势F210FFF201E和EFEF还212EI12RIRIRIR。2111222E和E21II0r0I0aE4.44U111E4.44U111据pBf(Bf)B的B21.31.30.7N/N2k2121E4.44U21112NNNk的121k1/kk2U时，一次绕组中有主电动势EE111降jIX1），电阻上的电压降IR1，方程式为R111UEEIREI(RjX)E1111111112E（漏抗压降jIXR上电压降IR，负载端电压为U，方程式为2222222UEEIREI(RjX)。222222222R和XR和X1122X、X12RXmmR和XmmT1/k；k2kk2SUU=380/220V，RΩ,X0.22,N1N2N11R,XΩ0.055，R80,XΩ3712mm2ΩX4R，TLLI、、I、UI1022TUk1N2NURkR1.72730.0350.104222221.72730.0550.164XXkX222RkR1.727338.95122LL1.7273411.934kX22LLZZ0.104j0.16411.9349.05512.0982Lj80j3719.05512.098ZZZ//(ZZ)0.14j0.221m2L8.68912.03314.84254.167U0380014.842I25.654.167A1Z1ZZI0I25.60.98477.9A2LZZ)(Zj1m2LjZII25.624.7AmZZ)(Zj21m2LU24.7IZ53.24914.91853.129368.50.12V22L2U368.5I24.742.66AUk1.7273V2223800UI24.7253.26A1ZZZ0.14j0.229.05512.098212LU00379.52777.831I77.831A1Z0mII(I)24.7253.2677.83125.6354.2A102IZU24.7253.2614.91853.129368.770.131V22L2U368.77I24.7242.7AU213.5Vk2223800UII24.7253.26A1ZZZ0.14j0.229.05512.0981212LI42.7A222U368.77U213.5Vk2U/U1NSN2N0.6A,p10WI00U20V，I4.55A，p25WsssU0.6UU220110Zk22N1N2NIm0pIRRkR227.78111.12m0220.62mm20XZR22mmm2181.213724.852XkX22mmUIUS220210002Z1N48.41N1N1NN111.12RmRXZ48.4m1NXmZ48.4m1N48.4UZZ4.396ZssIZsss1N48.4pRR4.227RssI22Zss1Ns48.4XXZRX22sZssss1NU/US联N1N2N400V,I65A,pU000380V,I43.3A,p4.6kW,试验温度为C试验时测得：Usss10103Uk14.43443.3A1NU30.41032N750103SI1NNU3101031N400UZ10.6590I65m033p4.1103033R0.97(65)2(I3)2m03XZR10.6590.972222mmmR14.4340.97202.09k2R2mm14.43410.6152211.533Xk2X2mmUs33Z5.067Issp4.6103s33R43.32sI2sXZR5.0670.8180.8181.01455.1022222sss2357523515310250RZRss(75C)RX2222s(75C)s(75C)s3IZ343.31100%100%100%3.83%100%0.76%uNs(75C)10103Us1N3IR343.31Nus(75C)10103Usr1N3IX343.35usx100%s100%3.75%1N10103U1NUUU。由公式载时二次电压变化的百分值，即U22NU(RcosXsin)s2s2|Xsin|Rcoss2s|Xsin|Rcoss2sRcos|Xsin|时s2sp11成～420psNm2U/ZI10～20SS20～305600U/U10/6.3kVS，，dN2NU6.72kWp2N0II，p17.92kW，U550Vss（（cos2（cos2UuZs3Uss1N17.92103PsNSRP0.00325600103ssNNXZ2Rs222ss(cosURsin)1(0.00320.80.05490.6)0.0355Xs2s2UUU0.0355)6.31036076.35V22NS10.910.91N2100%100%99.513%SPP22N20P0P6.720.6123717.92msNS0.9mN2100%100%99.57%S2P0.92mN20S5600U/U35/6.6kVN2NUIIR，XU**ss12U好等于额定值U解：根据U222UU02NU(RcosXsin)0RcosXsin0则s2s2s2s2Rs0.01tg()tg()10.78110.05252Xs35/6.3kVu第IS，U/U，＝N2Ns35/6.3kVu第S，U/U，＝N2Ns由ZZSS3064.96ISS4934.721SS32006.9%7.5%Z0.92ZSS0.92NSSS3200515283527S＝Npp5400P0P15000mCuSSmNNm5题3.2图极性试验图Y(a)(b)(c)(d)Y，联结UUU。由公式载时二次电压变化的百分值，即U22NU(RcosXsin)s2s2|Xsin|Rcoss2s|Xsin|Rcoss2sRcos|Xsin|时s2sp11成～0p42sNm2U/ZI10～20SS20～305600U/U10/6.3kVS，，dN2NU6.72kWp2N0II，p17.92kW，U550Vss（（cos2（cos2UuZs3Uss1N17.92103PsNSRP0.00325600103ssNNXZR2222sss(cosURsin)1(0.00320.80.05490.6)0.0355Xs2s2UUU0.0355)6.31036076.35V22NS10.910.91N2100%100%99.513%2SPP2N20P0P6.720.6123717.92msNS0.9mN2100%100%99.57%S2P0.92mN205600U/U35/6.6kVSN2NUIIR，XU**ss12U好等于额定值U解：根据U222UU02NU(RcosXsin)0RcosXsin0则s2s2s2s2Rs0.01tg()tg()10.78110.05252Xs35/6.3kVu第IS，U/U，＝N2Ns35/6.3kVu第S，U