【文章內(nèi)容簡介】 　↓ 假定 Ist 的初值 重新假定 Ist ↓ 起動時阻抗計算 ↓ st 計算 誤差大時 　↓ Ist 計算值與初值比較 ↓誤差小時 Tst 計算 電磁計算基本步驟 11 電磁計算步驟與程序 Y180L6 電磁計算程序（一）額定數(shù)據(jù)及主要尺寸1．輸出功率 2P=15kw2 =15kw2P2．外施相電壓 1U=380V1 =380V1U3．功電流 KWI = =??853?=4．效率 ??=?? =.89??5．功率因數(shù) ??cos= =?cos6．極數(shù) p=6p =6p7．定子槽數(shù) 1Q=541 =541Q轉(zhuǎn)子槽數(shù) 2=442 =4428．定子每極槽數(shù)= =9pQP1?654 =91P轉(zhuǎn)子每極槽數(shù)=P23=2PQ39．定轉(zhuǎn)子沖片尺寸見圖10．極距 P?= =????620549.?=?11．定子齒距 1t = =?.3 =12．轉(zhuǎn)子齒距 2t = =???.?=13．節(jié)距 y=8y =8y14．轉(zhuǎn)子斜槽寬 SKb= 15．每槽導(dǎo)體數(shù) 1Z=341 =341Z1216．每相串聯(lián)導(dǎo)體數(shù) 1?Z= =3061amZQ??2345?=3061?Z式中： =2117．繞組線規(guī)（估算） ?????????? ??KWIaISN式中：導(dǎo)線并繞根數(shù)截面積 ??1SN查表 取 =1 ?1???1SN=1 ?定子電流初步估算值 = =???????=?1I定子電流密度 ??1= =?18．槽滿率（1）槽面積=221RhbRSS????????????????=S=（2）槽絕緣占面積 ))24159.(58(0????????????SSii bRhC?=（3）槽有效面積 == mm2iSe? = mm2eS（4）槽滿率 ???efdZN=絕緣厚度 iC= =導(dǎo)體絕緣后外徑 d= =槽契厚度 h=2mmh =2mmh19．鐵心長 l鐵心有效長 無徑向通風(fēng)道=200+2 =???=13凈鐵心長 無徑向通風(fēng)道 = 200=184mmlKlFe???=184mmFel鐵心壓裝系數(shù) Fel= =20．繞組系數(shù) = =? =（1）分布系數(shù) 查表取 ??????????qKd =式中： 36541???pmQ=???（2）短距系數(shù) ??84.)8sin(9sin????opK?? =式中： 1?pQy 98??21．每相有效串聯(lián)導(dǎo)體數(shù)=306 =?????=?Z(二)磁路計算22．每極磁通 ???dpKZfE? ?式中： = 380=????????? =23．齒部截面積（1）定子 11PFeTQlbS??= 184 9=? =（2）轉(zhuǎn)子 = 184 22/322PFeTl??= =24．軛部截面積14（1）定子 = 184=???1?=式中：定子軛部磁路計算高度圓底槽:?).(93???? RDSi =?h（2）轉(zhuǎn)子 = 184=???=轉(zhuǎn)子軛部磁路計算高度平底槽?2Ch ???? KRidD=?h25．空氣隙面積 = =???=26．波幅系數(shù)= ?平 均最 大?SF =27．定子齒磁密 ?TSTB =28．轉(zhuǎn)子齒磁密 345...22 ?TSTF? =29．定子軛磁密 .???CB =30．轉(zhuǎn)子軛磁密 856..42???S? =31．空氣隙磁密 .?gSgFB =32．查附錄 Vl 得 1Tat2Ct2a33．齒部磁路計算長度定子15圓底槽 +2S1Th???R3=+ =? =?1Th轉(zhuǎn)子平底槽 =??? =?2Th34．軛部磁路計算長度定子 ??????????pDlCC211????==?1Cl轉(zhuǎn)子 )(??????????phlCiC =?2Cl35．有效氣隙長度 21CeKg?= =? =式中： 定、轉(zhuǎn)子卡氏系數(shù) 、1CK2??).(96.. 221????oCbgt =半閉口槽和半開口槽 ??).(74..2????oCbgtK =式中： 齒距 t1= 2=槽口寬 ob1= 2=1mmobob36．齒部所需安匝定子 = ???1T1ThatA?==轉(zhuǎn)子 ??2T2Tat= + ??==1637．軛部所需安匝定子 ???1C1ClatAT= ?==軛部磁路長度校正系數(shù) 1C= =轉(zhuǎn)子 ???2C2ClatAT= ?==校正系數(shù) 2= =38．空氣隙所需安匝 eggBAT??= =? =39．飽和系數(shù) 271..??gTTAF =40．總安匝 gCTATA212=++++==41．滿載磁化電流= =???.?=42．滿載磁化電流標(biāo)么值 = =.=43．激磁電抗= =? =（三）參數(shù)計算44．線圈平均半匝長（估算）17雙層線圈 =240+2 ????Zl式中： =240+2 20=240??1dl直 線 部 分 長 =240mmBL=??cos2YS???=??????pRhDSSOiY ??).3725(??=?式中： d1=20mm d1=???11iTSbR??. ??45．雙層線圈端部軸向投影長= =?sin??SdCf ?df47．漏抗系數(shù) ??5212106.?UpKZlPfdpefx? = )(.. 522???48．定子槽單位漏磁導(dǎo) 111LUSK????? = + ? ==?式中： ?1U ?1UK ? ?49．定子槽漏抗 xdpefSSCQlmx12????=18= ?= x式中： 無徑向通風(fēng)道時 =200mml?1 =200mm1l50．定子諧波漏抗 xTdped CFKSgmx?????????2121?? = ????? = xC1dx= xC式中： 21067.??S51．定子端部漏抗 ???= .?= x=52．定子漏抗 11edSx??=(++) ===53．轉(zhuǎn)子槽單位漏磁導(dǎo) =+=??? =?式中： ?U?2L? ?54．轉(zhuǎn)子槽漏抗 xefSSCQlpmx21??= ?Sx= xC19= xC55． xTe2p1dFRgmx???????????= ?????= xC=式中： ?R56．轉(zhuǎn)子端部漏抗=? ?= x=156mm?R57．轉(zhuǎn)子斜槽漏抗 ?????? ???????? = xC=58．轉(zhuǎn)子漏抗 SKedSx??22 =(+++) xC ==59．總漏抗 =+=?? =60．定子相電阻 10NSaZlR1z???????? 1R??61．定子相電阻標(biāo)么值 1KW1UIRr .. 1r02367.?62．有效材料 1ZCuNSQlG??????? = 54 34 1 ??50?==20????????DlKGFe = 290 290 ?? =式中： C==?==式中： ==? =?63．轉(zhuǎn)子電阻導(dǎo)條電阻 ????????2QSlRBB????==?端環(huán)電阻 ????????R2RSpDK?? ????? ==?式中： ??42110dpKZm?? ??= =轉(zhuǎn)子導(dǎo)條面積 = =端環(huán)截面積 =430R =430R轉(zhuǎn)子導(dǎo)條或端環(huán)的電阻系數(shù)=， =?R21導(dǎo)條電阻標(biāo)么值= =?380579. =端環(huán)電阻標(biāo)么值= =. =轉(zhuǎn)子電阻標(biāo)么值 =+=??2 =64．滿載電流有功部分=???=65．滿載電抗電流部分 ??????? ..3 222? ??????PmPms ixKixi =式中： =1+ ??==66．滿載電流無功部分 =+=? =67．滿載電勢 ??111xirRPL????? =1( + )??==??168．空載電勢 = ??? ==?69．空載定子齒磁密=1010TLTB??= =? =70．空載轉(zhuǎn)子齒磁密 20201TLT??= ==71．空載定子軛磁密= =???=72．空載轉(zhuǎn)子軛磁密= =? =2273．空載氣隙磁密= .7493831=???100?=74．空載定子齒安匝 =25 =??10TThatA =75．空載轉(zhuǎn)子齒安匝 ?22= + =? =76．空載定子軛安匝 ??1C010ClatAT= ==77．空載轉(zhuǎn)子軛安匝 = ????2C020Clat? = = ? = 20CA78．空載空氣隙安匝 = 778 =? =79．空載總安匝 0g2C102T1 AT???=++++==80．空載磁化電流 789. ????? A0mI789.?81．定子電流標(biāo)么值 3612. 78..0ii 22RP?? =定子電流實際值 = =???=82．定子電流密度= =??=?83．線負荷 1i1DIZmA???? .???A529.?84．轉(zhuǎn)子電流標(biāo)么值 =2xP2ii??2i13406.?轉(zhuǎn)子電流實際值 21dp1KW2QZmIi????=. ??=23端環(huán)電流實際值 pQIR???2 ??=85．轉(zhuǎn)子電流密度 導(dǎo)條密度 =2?BS =?端環(huán)密度= =?4368 =86．定子鋁損耗 = =??= = 15000320?Pll==． = =??== 15000=366W310?Pll =366wlP88．附加損耗參考實測值取 ?S =89．機械損耗參考實測值取 130W321065.???????DpPfw =130wfw機械損耗標(biāo)么值= =?ff =90．定子鐵耗（1） 定子齒體積 =6 ???11TThSpV? =1292655=12926551TV（2） 定子軛體積 =2 6 ??112CC ? =3217567 =32175671C（3） 損耗系數(shù) 1Tp（4）定子齒損耗 =?? =（5）定子軛損耗 = =（6）總鐵耗 121TFePk???= + 2?==24鐵耗校正系數(shù) = =21k2鐵耗標(biāo)么值= =??=91．總損耗標(biāo)么值 fwSFe2All P??? =++++==?92．輸入功率 =?P1 =93． 總損耗比= = ?94．效率 ==???? =?95．功率因數(shù)= =??.?=?cos96．轉(zhuǎn)差率=????????fwSCTFeAllPPSn2298=97．轉(zhuǎn)速=??pSfnn??)29.(5? =977r/min=977r/minn98．最大轉(zhuǎn)矩 ????????????xrSTnM==99．起動電流假定值 KWMst ITI???)~(= =?=?stI100．起動時漏磁路飽和引起漏抗變化的系數(shù) =??CstLgAB??? = 對應(yīng) Kz==25 ????02121170. ?????????????QKaZIATpdUstst= 17 ????????==?????=+ .=101．齒頂漏磁飽和引起定子齒頂寬度的減少??ZSKbtC??101=()()==102．齒頂漏磁飽和引起轉(zhuǎn)子齒頂寬度的減少??Z022S1bt??=()()==103．起動時定子槽單位漏磁導(dǎo) =???1111 LUUstS KK????? ()+ ?==??stS1?式中： =??104．起動時定子槽漏抗 ??????SststSxx =??stSx1=105．起動時定子諧波漏抗= =??11dZstdxKx? ??stdx1=106．定子起動漏抗 ??????1111 estdstSst x??=(++)Cx==??st126107．考慮到擠流效應(yīng)的轉(zhuǎn)子導(dǎo)條相對高度 .???BRbfh?? =?式中： Bh ==1RBbB?=? =?108．轉(zhuǎn)子擠流效應(yīng)系數(shù)=~r =~r=~x =~x109．起動時轉(zhuǎn)子槽單位漏磁導(dǎo)=+??????stLstUstS222???? ==??stS2?式中： =??22st??==??stU2=? =??= =??20~2LstLx???=??stL110．起動時轉(zhuǎn)子槽漏抗 ????CxSststS1284. ?? ??stSx2= C184.111．起動時轉(zhuǎn)子諧波漏抗= ??2dZstdK??==??stdx2112．起動時轉(zhuǎn)子斜槽漏抗=