电机原理及拖动地全部问题详解

实用标准文案精彩文档第一章直流电机原理P411－3解：3141060.87()230NNNPIAU11416.37()0.855NNPPKwP411－4解：1110131430()NNPUIW311.11076.92%1430NNPP114301100330()NpPPWP421－21解：)(53.1150230ARUIfNf)(13.7153.16.69AIIIfNa23071.130.128239.1()aNaaEUIRV)(6.647128.013.7122WRIpaacu)(1700713.711.239WIEPaaM)(5.18713855.0101631WPPNNP421－29解：)(92.39683.06.40AIIIfNNa)(5.211213.092.39220VRIUEaaNa)(1.844392.395.211WIEPaaM)(4.339213.092.3922WRIpaacu)(26.150683.0220WUIpNfNf)(89326.402201WIUPNN%97.838932105.731PPN)(1.943105.71.84433WPPpNMo)(88.2630001000/1.844395509550mNnPTNMN27.59550955023.88()3000NNNPTNmn226.8823.883()oNNTTTNm实用标准文案精彩文档或者)(330001000/1.94395509550mNnPTNooP421－30解：)(5.24511027000AUPINNN)(5.25055.245AIIIfNNaN1.0115002.05.250110NaaNNNenRIUCrpmCRIUnNeaaNN10501.002.05.250110或者：)(11502.05.250110VRIUEaaNNaN110250.50.02105()aNaNaEUIRVrpmEnEnnEnEaNNaaNaN10501151150105P421－31解：)(8411397)(97113110VRIEUVRIUEEIInnnCEaNaaNNaNaaNaNNNNeaNP421－32解：)(2505255AIIIfNNaN841.0500078.0250440NaaNNNenRIUC30TeCC032.8841.055.930NeNTCC（1）296955095501833.6()500NNNPTNmn（2）)(2008250032.8mNICTaNNTN（3）220081833.6174.4()oNNTTTNm（4）rpmCUnNeNo523841.0440实用标准文案精彩文档(5)'20.078174.45235210.8418.032NaooeNeTNURnTrpmCCC或者：)(71.21032.84.174ACTINToaorpmCRIUnNeaaoNo521841.0078.071.21440'P421－33解：)(179747.812201WIUPNN)(1527885.0179741WPPNN)(48.28.88220ARUIfNfN)(22.7948.27.81AIIIfNNaN)(6.6271.022.7922WRIpaaNcu)(5468.8848.222WRIpffNf)(269615278179741WPPpN2696627.65461522()mFecufpppppW15278152216800()MNmFePPppWP421－34解：（1）27595509550955()750NNNPTNmn（2）)(1874191AIIIfNNaN)(7.424082.0187440VRIUEaaNNaN)(794191877.424WIEPaNaNM)(3.1011750419.7995509550mNnPTNMN（3）566.07507.424NaNNenEC实用标准文案精彩文档440777.40.566NoeNUnrpmC（4）21011.395556.3()oNNTTTNm)(42.10566.055.93.5655.9ACTCTINeoNToaorpmCRIUnNeaaoNo776566.0082.042.10440'P421－35解：)(5.885.291AIIIfNNaN142.01500074.05.88220NaaNNNenRIUC220500.07415230.142NaaeNUIRnrpmC第三章直流电动机的电力拖动P1053－28解：（1）估算：3322101122030560100.038()22305NNNaNUIPRI2084.01000038.0305220NaaNNNenRIUCrpmCUnNeNo7.10552084.02209.559.550.2084305607()NeNaNTCINm过（no=1056rpm，T=0），（nN=1000rpmTN=607N.m）两点，可画出固有机械特性。（2）T=0.75TN时，0.75aaNII：rpmCRIUnNeaaN10142084.0038.030575.0220或者：rpmTCCRCUnNTeaNeN10142084.055.960775.0038.02084.022022实用标准文案精彩文档（3）)(2.243038.011002084.0220ARnCUIaNeNP1053－29解：2200.72305NNNURI（1）0220.50.50.721055.76075299.55()9.55(0.2084)NRNNeNRnnTrpmC过（0n，0），（529，607）两点画直线。（2）022220.721055.760710529.55()9.55(0.2084)NRNNeNRnnTrpmC过（0n，0），（–1052，607）两点画直线。或：222020.7230510520.2084NNNRNeNURInrpmC（3）000.50.50.51055.7528NeNUnnrpmC0220.0385286074729.55()9.55(0.2084)aVNNeNRnnTrpmC过（0n，0），（472，607）两点画直线。（4）001055.72111.30.50.50.5NeNUnnrpmC0220.0382111.360718899.55(0.5)9.55(0.50.2084)aNNeNRnnTrpmC过（0n，0），（1889，607）两点画直线。P1053－30解：311100.65()285.2NstURI3330.651.70.129staRR12285.2100.2()1.193.72()1.7NIIAIA实用标准文案精彩文档符合要求。11.70.1290.219()STaRR211.70.2190.372()STSTRR1(1)(1.71)0.1290.091()starR211.70.0910.153()ststrr321.70.1530.26()ststrrP1053－31解：（1）136.01500376.041220NaaNNNenRIUC降压瞬间，转速不变，有：Nnn)(83.63376.01500136.0180ARnCUIaNNea)(9.82)83.63(136.055.955.9mNICTaNe（2）rpmCRIUnNeaaN1210136.0376.041180P1063－32解：9.55TeCCaeaTICICT55.9rpmICRCUICCRCUTCCRCUnaNNeaNeNaNNeNeaNeNNTeaeN1845136.08.041376.0136.08.02208.08.055.9)8.0(55.98.02222或者：aNNTNaTICTICT4151.25()0.80.8NNaaNaNNIIIArpmCRIUneaaN1845136.08.0376.025.51220AIAIrpmnrpmnNaN4125.51,15001845所以，电动机不能长期运行。实用标准文案精彩文档P1063－33解：（1）1364.01500224.07.68220NaaNNNenRIUCrpmCUnNeNo16131364.0220rpmnno1129)3.01(1613)1(min（2）33.111291500minmaxnnD（3）737.0224.07.6811291364.0220minaNNeNcRInCUR（4）122068.715114()15.114NNPUIWkW忽略To，TN=T2N，2139550955082.77()1500NNNPTNmn因为额定负载不变，有：2min282.7711299.785()95509550NTnPkW)(3478737.07.6822WRIpcaNcuRcP1063－34解：（1）rpmnnnNoN11315001613rpmnnNo7.3763.0113maxminrpmnnnNo7.2631137.376minmin（2）69.57.2631500minmaxnnD（3）)(4.511364.07.376minminVnCUoNe（4）)(2.35317.684.51min1WIUPN忽略To，则有：282.77NNTTNm2min282.77263.72.286()95509550NTnPkW实用标准文案精彩文档P1063－35解：411.01000376.076440NaaNNNenRIUCrpmCUnNeNo6.1070411.0440（1）低速时采用降压调速：rpmnnnNoN6.7010006.107028.02506.70minmaxoNnnrpmnnnNo4.1796.70250minmin（2）高速时采用弱磁调速，U=UN不变，允许最高转速时Ia=IN2935.0411.015006.1070maxeooNeeCnnCC9.559.550.293576213()TaeaTCICINmrpmTPnN13002132995509550max（3）25.74.1791300minmaxnnDP1063－36解：13.075035.02.35110NaaNNNenRIUC11035.20.35