單相串勵(lì)電機(jī)課程設(shè)計(jì)

1、 H a r b i n I n s t i t u t e o f T e c h n o l o g y課程設(shè)計(jì)說(shuō)明書(shū)(論文課程名稱(chēng):電機(jī)設(shè)計(jì)設(shè)計(jì)題目:單相串激電動(dòng)機(jī)原理與設(shè)計(jì)院系:電氣工程及自動(dòng)化班級(jí):設(shè)計(jì)者:學(xué)號(hào):指導(dǎo)教師:設(shè)計(jì)時(shí)間:2016.01.042016.01.17哈爾濱工業(yè)大學(xué)教務(wù)處哈爾濱工業(yè)大學(xué)課程設(shè)計(jì)任務(wù)書(shū) 單相串激電機(jī)的設(shè)計(jì)1 主要技術(shù)要求1、額定功率 750N P W =2、額定交流電壓 220N U V =3、電源頻率150f Hz = 4、額定轉(zhuǎn)速12000N n rpm = 5、額定轉(zhuǎn)矩 597.260N N N P P M g cm n =6、額定效率 65%

2、N =7、額定功率因數(shù)cos 0.92N = 8、工作狀態(tài):連續(xù)工作狀態(tài)2 電機(jī)主要參數(shù)9、計(jì)算功率 110.65750951.92220.65N i N N N P EI P W += 10、負(fù)載時(shí)的電樞電流750 5.70cos 0.652200.92N a N N N P I A U = 11、負(fù)載時(shí)電樞電勢(shì) 951.921675.70i a P E V I = 12、極對(duì)數(shù)1P = 13、極弧系數(shù) 0.663=14、預(yù)取線(xiàn)負(fù)荷 1130A A cm =15、預(yù)取氣隙磁感應(yīng)強(qiáng)度 15000B Gs =16、電機(jī)常數(shù) 111969C = 17、電樞長(zhǎng)徑比1.1= 18、電樞外徑 21010

3、52.2D mm =19、鐵芯計(jì)算長(zhǎng)度 2 1.152.257.4L D mm =取 57.4L mm = 20、電樞周邊速度 32310603.1452.2120001032.783560Ne D n V m s m s -=< 21、極距 23.1452.282.0221D mm P = 22、計(jì)算極弧長(zhǎng)度 00.66382.054.4b mm =23、電樞鐵芯磁化頻率1120002006060N Pn f Hz = 24、氣隙長(zhǎng)度 20.010.0152.20.522D mm =取 0.85mm = 25、定子外徑122252.2104.4D D mm = 取 1110D mm =

4、26、定子內(nèi)徑122252.220.5253.2D D mm =+=+= 27、轉(zhuǎn)子內(nèi)徑2220.210.2152.210.962D D mm =取 2210.96D mm =3-3 電樞及換向28、電樞繞組型式:采用單迭繞組 29、負(fù)載時(shí)每極有效磁通1202510500054.457.410 1.56110a B b L MX-=30、導(dǎo)體數(shù)86010756N a N Pn = 其中并聯(lián)支路對(duì)數(shù) 1a =31、電樞槽數(shù)20.40.452.220.88Z D =取 21Z =(槽32、換向片數(shù) 363K Z = 33、電樞繞組元件匝數(shù)75662263C NW K= 取 6C W =(匝34、電

5、樞導(dǎo)體數(shù)最終值22636756C N KW =(條35、氣隙磁感應(yīng)強(qiáng)度最終值 100105002N a E B P n b L NGs= 150025000100%100%50020.04%3%B B B -=< 通過(guò) 36、每極有效磁通最終值202510500254.457.410 1.56210a B b L MX-=37、電樞線(xiàn)負(fù)荷終值 2756 5.701010131.4/22 3.1452.2a N I A A mm D =1130131.4100%100% 1.1%3%131.4A A A -=< 通過(guò) 38、電樞每槽導(dǎo)體數(shù) 7563621NS Z =(條 39、電樞繞

6、組的元件節(jié)距及換向器節(jié)距11Y Y 2633122113113011K K P Y Y Y =±=±=-=-= 40、電樞繞組電流密度預(yù)取值 1212a j A mm =41、導(dǎo)線(xiàn)截面及直徑 1125.700.23572212a a a I g mm j =根據(jù)導(dǎo)線(xiàn)標(biāo)準(zhǔn),取導(dǎo)線(xiàn)QZ-1 導(dǎo)線(xiàn)截面積 20.2376a g mm = 銅線(xiàn)直徑0.55a d mm =帶絕緣導(dǎo)線(xiàn)外徑 0.60au d mm = 42、電樞繞組內(nèi)最終電流密度 25.7012220.2376a a a I j A mm g = 43、電樞槽與齒的計(jì)算齒距 22 3.1452.27.8121D t mm

7、 Z=齒磁密217000t B Gs = 齒寬22250027.812.470.9317000t Fe t B t b mm K B =其中鐵芯迭壓系數(shù)0.93Fe K =槽口寬 02 2.6 2.60.92 2.03au b d mm = 槽口高02020.550.55 2.39 1.31h b mm =槽上圓直徑22202(23.14(52.22 1.3121 2.474.35021 3.14td D h Zb d Z mm-=+-=+軛磁密215000j B Gs =軛高22252.250029.3592210.9315000j Fe j D B h mm PK B =槽高222220.

8、5(20.5(52.210.96229.35911.260t j h D D h mm=- =-=槽下圓直徑2222(2sin1sin(52.2211.260sin 2.47212.301sin21t t x D h b Zd Zmm-=-=-槽上下圓中心距2222020.5(11.260 1.120.5(4.350 2.30 6.82t S d x h h h d d mm=-+=-+=44、電樞槽截面積22222222222(826.82(4.350 2.30(4.350 2.3032.1882S d x d x h S d d d d mm =+=+=45、槽滿(mǎn)率222360.6031.

9、6%33%4432.18au S S d f S =<基本符合要求 轉(zhuǎn)子沖片圖46、一根導(dǎo)體平均長(zhǎng)度 21.257.4 1.252.2120.04a L L D m m=+=+= 47、熱態(tài)電樞繞組電阻111.221057004756120.041.22102.04570040.2376aa aN L r g -=48、滿(mǎn)載情況下電樞繞組內(nèi)電壓降5.70 2.0411.63a a a U I r V =49、換向器直徑及周邊速度20.80.852.241.76K D D mm =3341.7612000101026.26060K NK D n V m s -=50、換向片距41.76 2

10、.0863K k D t mm K =25t mm << 符合要求51、電刷參數(shù) 選用電刷牌號(hào)為 308D = 摩擦系數(shù)0.25= 每對(duì)刷電壓降2.5S U V =電流密度允許值 0210S J A mm = 單位壓力2300S P g mm =最大周邊速度040K V m s =52、點(diǎn)刷的電流密度0210S S j j A mm =53、點(diǎn)刷的截面積及其尺寸2225.70101057110a S S I S mm P j = 電刷寬度1.9 1.92.13.99s k b t mm =取 4s b mm =電刷長(zhǎng)度5714.254S s s S a mm b = 取 12.5s

11、 a m m=,高 12.5r mm = 54、換向器軸向有效長(zhǎng)度 1 1.7 1.712.521.25K s L a mm =換向器軸向總長(zhǎng)1421.2540.5523.45K K a L L d mm =+=+=55、換向的檢驗(yàn) 換向區(qū)域?qū)拵?(26363152.24(31 2.12121141.7611.56k s k KD K K ab b Y t Z P P D mm=+-=+-= 換向?qū)拵г试S值 000.8(0.8(82.054.422.08k b b mm =-=-=0k k b b < 符合要求電樞元件漏磁通單位磁導(dǎo)22222022 1.20.60.92log 211.2

12、60 1.252.27.810.60.92log4.350 2.30120.04 2.033.55t d x a h D td d L b =+=+=電樞短路元件內(nèi)電抗電勢(shì)7721026 3.55131.457.432.78101.05r C e e W A L V V-=電樞反應(yīng)電勢(shì)770.8106131.482.057.432.780.81082.054.41.1C eKR W A L V e b V-=-=-=合成電勢(shì)1.05 1.12.15P r KR e e e V =+=+=4.5P e V < 滿(mǎn)足要求一個(gè)元件中產(chǎn)生的變壓器電勢(shì)81584.44104.44506 1.561

13、1010 2.08Kt C a e f W V-=(68Kt e V <- 滿(mǎn)足要求3-4 磁路系統(tǒng)及磁路計(jì)算取 定子磁極 7000m B Gs =定子軛 19000j B Gs = 電樞齒 217000t B Gs =電樞軛 215000j B Gs =氣隙5002B Gs =56、磁極尺寸 軸向長(zhǎng)度 157.4L L mm =極芯高度 120.30.352.215.66t h D mm = 極靴厚度 20.060.0652.2 3.13x b D mm = 極芯磁密17000t B Gs =極芯截面積522111.1 1.1 1.562101001024557000a t t S m

14、m B =極芯寬111245546.00.9357.4t t Fe S b mm K L = 定子沖片圖57、機(jī)座尺寸 機(jī)座軛磁密 19000j B Gs =機(jī)座軛截面積5211 1.562101.1100 1.1100955229000aj j S mm B =機(jī)座厚11195517.890.9357.4j j Fe S h mm K L =58、氣隙磁勢(shì) 氣隙系數(shù) 2202107.81100.521.2107.812.03100.52t K t b +=-+-+氣隙磁勢(shì)111.6101.6 1.1850020.5210491F K B -= 59、電樞齒磁勢(shì) 電樞沖片選用DW470-50電

15、樞齒磁場(chǎng)強(qiáng)度 由相應(yīng)的磁密查磁化曲線(xiàn)得到,以下同。 電樞齒磁場(chǎng)強(qiáng)度 258/t H A cm = 217000t B Gs =電樞齒磁勢(shì)2112221025811.26010130.62t t t F H h -=(安匝60、電樞軛磁勢(shì) 電樞軛磁場(chǎng)強(qiáng)度 212j H A cm = 215000j B Gs =電樞軛長(zhǎng)2222(2(52.2211.2609.35931.90221t j j D h h L mm P-=電樞軛磁勢(shì) 21122101231.901038.28j j j F H L -=(安匝61、極芯磁勢(shì) 極芯磁場(chǎng)強(qiáng)度 1=0.84t H A cm 17000t B Gs =極芯磁

16、勢(shì)1111121020.8415.6610 2.63t t t F H h -=(安匝62、極軛磁勢(shì) 極軛磁場(chǎng)強(qiáng)度 1 1.12j H A cm =19000j B Gs =極軛長(zhǎng)1111(11017.8946.098.61221j j t D h L b mm P-=-=-=極軛磁勢(shì)1111110 1.1298.611011.04j j j F H L -=(安匝 63、每對(duì)極磁勢(shì)11221.09(1.09(49111.04 2.63130.6238.28734j t t j F F F F F F =+=+=64、每極匝數(shù)145.53W =(匝 取 145W =(匝65、定轉(zhuǎn)子繞組匝比 1

17、44450.39756K W K N = 66、導(dǎo)線(xiàn)截面及直徑 電流密度初值 2111j A mm = 截面初值211 5.700.51811a I g mm j = 取導(dǎo)線(xiàn)規(guī)格為 QZ-1 銅導(dǎo)線(xiàn)直徑10.83d mm = 帶絕緣導(dǎo)線(xiàn)直徑 10.89u d mm =導(dǎo)線(xiàn)截面積210.5411q mm =激磁繞組窗口面積222111450.8942.90.830.83u W d S mm =定子擁有的有效窗口面積'22111122220.12(2(240.12(110217.89(53.22 3.134185.87j x S D h D b mm =-+=-+='11S S &

18、lt;定子窗口夠用 67、電流密度終值 211 5.7010.53/0.5411a I J A mm q = 68、熱態(tài)電阻線(xiàn)圈平均匝長(zhǎng)112112 1.122 1.350.57110217.89 1.1252.2257.4 1.350.5746.0267.71j b t D h D L L b P mm-+=+-+=+-= 熱態(tài)電阻1111122145267.71.2210 1.22100.953570057000.5411b PW L r q -=69、激磁電阻電壓降 11 5.700.953 5.43a U I r V =70、電動(dòng)機(jī)電阻電壓降111.63 5.43 2.519.56a

19、S U U U U V =+=+=71、漏抗壓降電樞漏抗壓降281228210250756 3.55 5.7410 5.70 2.4812121a af N LU I a ZV -= 式中 L 單位為 cm 激磁漏抗壓降811584.442(1104.44502145(1.110.8 1.5611010 2.495b S a U f P W K V-=-=-=其中參數(shù)1.1=0.8S K =漏抗壓降2.481 2.495 4.98C a b U U U V =+=+=72、主磁通脈振在激磁繞組中的自感電勢(shì)8111584.442104.44502145 1.561101031.2t a e f

20、P W V-=73、交軸電樞反應(yīng)磁通的脈振在電樞繞組中的自感電勢(shì)328122232822100.15500.66375652.2 5.74100.15 5.7034.7711 1.180.52qe af N D L e I a P K V -=式中 L 單位為 cm 74、端電壓 有功部分電壓19.56167186.56r U U E V =+=+=無(wú)功部分電壓1 4.9834.7731.270.95x C qe t U U e e V =+=+=端電壓1199.6U V = 1220200100%100%9.1%220N NU U U -=基本滿(mǎn)足要求75、功率因數(shù)1186.56cos 0.

21、935199.6r U U =cos cos 0.920.935100%100% 1.6%cos 0.92N N-=3-6 損耗和效率76、鐵重 機(jī)座重6121111622(21022(52.2215.6617.8917.8957.4102.291j t j j G D h h h L Kg-=+=+=磁極重611167.82107.821245515.66100.600t t t G P S h Kg-=電樞軛重26222265.5(2105.5(52.2211.26057.4100.278j t G D h L Kg-=-=-=電樞齒重622267.8107.821 2.4711.2605

22、7.4100.261t t t G Z b h L Kg-=77、機(jī)座、磁極及電樞中的磁滯和渦流損耗 單位鐵耗系數(shù)211122( 2.5(10010050502 1.1( 2.5 1.4( 1.975100100Fe f fK W Kg=+=+=其中系數(shù) 1.1= 1.4=2222( 2.5(1001002002002 1.1( 2.5 1.4(18.400100100Fe f f K W Kg=+=+=2321.5(3(1001002002001.5 1.1(3 1.4(20.1100100Fe f f K W Kg=+=+=機(jī)座中鐵耗1221119000( 1.975( 2.291 3.6651000010000j