发电机电磁计算凸极同步发电机电磁计算公式5.1 额定数据和主要尺寸1．额定电压 U N«Skip Record If...»2．额定转速 n N«Skip Record If...»3．额定频率ƒ«Skip Record If...»4．额定功率因数 cos«Skip Record If...»=0.85．额定电流 «Skip Record If...»6．相数 m=37．确定功率: «Skip Record If...»8．根据功率取对应T2X-250L电机，额定功率«Skip Record If...»9．效率 «Skip Record If...»10．极数«Skip Record If (2)«Skip Record If...»11．计算功率：«Skip Record If...»式中«Skip Record If...»（对于同步发电机取值）12．极弧系数：极弧长度«Skip Record If...»取«Skip Record If...»=«Skip Record If...»13．气隙磁密«Skip Record If...»取«Skip Record If...»14．取线负荷«Skip Record If...»15．电机的计算体积«Skip Record«Skip Record If...»«Skip Record If...»If...»«Skip Record If...»16．主要尺寸比：«Skip Record If...»17．定子铁心内径取值范围«Skip Record If...»«Skip Record If...»18．定子铁心铁外径：«Skip Record If...»按标准选取«Skip Record If...»则定子内径：«Skip Record If...»19．定子铁心有效长度：«Skip Record If...»20．定子铁心净长度：«Skip Record If...»式中«Skip Record If...»=0.92(对0.5mm厚硅钢片)在对发电机的计算中,«Skip Record If...»不计入«Skip Record If...»中本次设计选用的硅钢片型号为：DR530-50对应的老牌号为D2221．磁极铁心总长度：«Skip Record If...»22．磁极铁心净长度：«Skip Record If...»式中«Skip Record If...»=0.95（对于«Skip Record If...»厚钢片）23．极距：«Skip Record If...»24．圆周速度：«Skip Record If...»25．气隙长度：最小气隙：«Skip Record If...»«Skip Record If...»取«Skip Record If...»最大气隙：«Skip Record If...»26．铁心的计算长度：«Skip Record If...»5.2 定子绕组27．每极每相槽数：«Skip Record If...»28．定子槽数：«Skip Record If...»29．取绕组节距比：«Skip Record If...»30．绕组节距：«Skip Record If...»31．绕组短距系数(基波)：«Skip Record If...»32．绕组分布系数(基波)：«Skip Record If...»33．绕组系数（基波）：«Skip Record If...»34．预计每极磁通«Skip Record If...»35．每相串联匝数初值«Skip Record If...»36．取并联支路数«Skip Record If...»37．每槽导线数：取«Skip Record If...»«Skip Record If...»38．每相串联导体数：«Skip Record If...»«Skip Record If...»39．线负荷：A=«Skip Record If...»5.3 定子槽型尺寸(选取梨型槽)40．选定槽口尺寸：«Skip Record If...»41．定子齿距：«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»42．定子齿宽度：«Skip Record If...»式中：«Skip Record If...»：铁心叠压系数，取0.92«Skip Record If...»：定子齿磁密，取1.40«Skip Record If...»取«Skip Record If...»43．槽形尺寸如图5.1：图5.1 定子槽形尺寸«Skip Record If...»«Skip Record If...»«Skip Record If...» «Skip Record If...»则定子齿计算宽度：«Skip Record If...»44．定子槽深：«Skip Record If...»45．槽面积，取槽锲厚度«Skip Record If...»，如图5.2所示：图5.2 定子槽尺寸«Skip Record If...»«Skip Record If...»=«Skip Record If...»46．槽绝缘面积取：«Skip Record If...»«Skip Record If...»«Skip Record If...»=«Skip Record If...»«Skip Record If...»取槽满率为75%，绕组并绕根数为«Skip Record If...»则绝缘导线直径：«Skip Record If...»查表取铜对应的标称线规QZ:标称导线直径d=1.60mm 漆膜厚度0.06——0.1147．定子导线截面积（查表得）：«Skip Record If...»48．定子绕组电密：«Skip Record If...»49．发热参数：«Skip Record If...» 5.4 磁路计算50．定子齿计算高度：«Skip Record If...»51．定子轭高度：«Skip Record If...»«Skip Record If...»52．定子轭计算高度：«Skip Record If...»«Skip Record If...»53．定子轭磁路长度：«Skip Record If...»54．极靴宽度：«Skip Record If...» «Skip Record If...»55．磁极偏心距：«Skip Record If...»其中«Skip Record If...»«Skip Record If...» =4.00«Skip Record If...»56．极靴圆弧半径«Skip Record If...»57．极靴边缘高度：«Skip Record If...»58．极靴中心高度：«Skip Record If...»=«Skip Record If...» =22.93«Skip Record If...»59．初取漏磁系数：«Skip Record If...»60．磁极宽度（磁极尺寸如图5.3所示）：«Skip Record If...»61．转子轭内径：«Skip Record If...»62．转子轭外径：«Skip Record If...»63．磁极中心高：«Skip Record If...»«Skip Record If...»=«Skip Record If...»64．磁极侧高度：«Skip Record If...»式中«Skip Record If...»«Skip Record If...»=5.7595«Skip Record If...»65．转子轭高度：«Skip Record If...»66．转子轭计算高度：«Skip Record If...»«Skip Record If...»«Skip Record If...»=«Skip Record If...»图5.3 磁极尺寸67．转子轭磁路长度：«Skip Record If...»=«Skip Record If...» 68．转子轭轴向长度：«Skip Record If...» 69．磁极与轭间残隙：«Skip Record If...»70．实际极弧系数： «Skip Record If...»=«Skip Record If...»=0.6671．气隙比：«Skip Record If...»72．最小气隙比极距：«Skip Record If...»73．基波磁场幅度系数：«Skip Record If...» （查交流电机设计手册）74．三次谐波磁场幅度系数：«Skip Record If...»75．磁场分布系数：«Skip Record If...»76．磁场波形系数：«Skip Record If...»77．直轴电枢反应磁场幅度系数：«Skip Record If...»（查交流电机设计手册）78．交轴电枢反应磁场幅度系数：«Skip Record If...» （查交流电机设计手册）79．电枢磁动势直轴折算系数：«Skip Record If...»80．电枢磁动势交轴折算系数：«Skip Record If...»81．定子卡氏系数（对于半闭口半开口槽）：«Skip Record If...»«Skip Record If...»=1.0782．阻尼笼卡氏系数（阻尼笼尺寸如图5.4所示）：«Skip Record If...»图5.4 阻尼笼尺寸83．卡氏系数：«Skip Record If...»84．空载每极总磁通：«Skip Record If...»85．气隙磁密（最大值）：«Skip Record If...»86．定子视在齿磁密：«Skip Record If...»查表：«Skip Record If...»≤1.8T 则 «Skip Record If...»=«Skip Record If...»=1.4928T87．定子轭磁密：«Skip Record If...»88．气隙磁压降：«Skip Record If...»=«Skip Record If...»89．定子齿磁压降：«Skip Record If...»式中«Skip Record If...»对应于«Skip Record If...»，查磁化曲线B25=1.48T得«Skip Record If...»=26.84890．定子轭磁压降：«Skip Record If...»式中：«Skip Record If...»为轭部修正系数«Skip Record If...»=0.324«Skip Record If...»对应于«Skip Record If...»，查磁化曲线B25=1.48T得«Skip Record If...»=31.15891．气隙、定子齿、轭部磁压降之和：«Skip Record If...»92．计算漏磁几何尺寸：«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»=«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»93．磁极压板厚：«Skip Record If...»94．磁极压板宽：«Skip Record If...»95．磁极计算高度：«Skip Record If...»96．极靴漏磁导：«Skip Record If...»=71.3097．极身漏磁导：«Skip Record If...»=68.18=«Skip Record If...»98．磁极漏磁导：«Skip Record If...»99．每极漏磁通：«Skip Record If...»100．漏磁系数：«Skip Record If...»«Skip Record If...»101．磁极磁通：«Skip Record If...»102．磁极极身截面积：«Skip Record If...»103．极身磁密：«Skip Record If...»104．转子轭磁密：«Skip Record If...»105．残隙处磁密：«Skip Record If...»106．极身磁压降： «Skip Record If...»查磁化曲线B25=1.48T表可得：«Skip Record If...»=24.4 对应于«Skip Record If...»107．转子轭磁压降：«Skip Record If...»查磁化曲线B25=1.48T表可得：«Skip Record If...»=7.7445 108．残隙磁压降：«Skip Record If...»«Skip Record If...»109．空载每极磁压降：«Skip Record If...»5.5 稳态参数110．定子线圈尺寸（如图5.5所示）：«Skip Record If...»«Skip Record If...»取30度图5.5 线圈尺寸定子线圈节距：«Skip Record If...»=«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»参考值取 «Skip Record If...»=2.0«Skip Record If...»111．线圈半匝平均长度：«Skip Record If...»112．定子绕组相电阻：«Skip Record If...»式中«Skip Record If...»=0.0217«Skip Record If...»113．定子槽比漏磁导：«Skip Record If...»«Skip Record If...»=0.66114．定子绕组端部比漏磁导：«Skip Record If...»115．谐波比漏磁导：«Skip Record If...»116．每相漏抗：«Skip Record If...»«Skip Record If...»`117．漏抗标么值：«Skip Record If...»118．相电阻标么值：«Skip Record If...»119．每极电枢反应磁动势：«Skip Record If...»120．电枢反应直轴折算磁动势：«Skip Record If...»121．电枢反应交轴折算磁动势：«Skip Record If...»122．直轴电枢反应电抗：«Skip Record If...»123．交流电枢反应电抗：«Skip Record If...»124．直轴同步电抗：«Skip Record If...»125．交轴同步电抗：«Skip Record If...»126．短路比：«Skip Record If...»127．内功率因数角：«Skip Record If...»128．额定功角：«Skip Record If...»则： «Skip Record If...»5.6 额定负载时励磁磁动势和励磁绕组129．额定负载时内电动势：«Skip Record If...»=«Skip Record If...»=«Skip Record If...»«Skip Record If...»130．额定工况时磁路计算：«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»131．额定负载时每极磁压降：«Skip Record If...»«Skip Record If...»132．额定负载时励磁磁动势：«Skip Record If...»=3172.85«Skip Record If...»=«Skip Record If...»133．取励磁绕组每极匝数：«Skip Record If...»134．额定励磁电流：«Skip Record If...»135．空载励磁电流：«Skip Record If...»136．取励磁电流电密（取值）：«Skip Record If...»137．励磁绕组导线截面积：«Skip Record If...»138．励磁绕组线规：«Skip Record If...»励磁线圈的尺寸如图5.6所示：图5.6 励磁线圈尺寸139．第n层线圈平均匝长度：«Skip Record If...»=2[9.16+28 +«Skip Record If...»=72.81+9.42«Skip Record If...»式中 «Skip Record If...»——线圈框架直线长度 «Skip Record If...»——线圈框架直线宽度«Skip Record If...»——框架圆角半径«Skip Record If...»——导线长边尺寸«Skip Record If...»=1 为第一层«Skip Record If...»=2 为第二层140．励磁绕组平均匝长度：«Skip Record If...»«Skip Record If...»——第«Skip Record If...»层线圈匝数141．励磁绕组电阻：«Skip Record If...»142．额定励磁电压：«Skip Record If...»0.6V——为电刷压降,励磁绕组取B级绝缘励磁绕组E级绝缘«Skip Record If...»=1.13«Skip Record If...»励磁绕组B级绝缘«Skip Record If...»=1.15«Skip Record If...»励磁绕组F级绝缘«Skip Record If...»=1.244«Skip Record If...»143．空载励磁电压：«Skip Record If...»r«Skip Record If...»144．电压调整率:«Skip Record If...»=1%式中：«Skip Record If...»5.7 阻尼绕组设计145．每极阻尼笼条数：«Skip Record If...»146．每极定子绕组截面积：«Skip Record If...»147．每根阻尼条截面积：«Skip Record If...»«Skip Record If...»148．阻尼条直径：«Skip Record If...»149．阻尼槽节距：«Skip Record If...»«Skip Record If...»«Skip Record If...»取«Skip Record If...»=2.25«Skip Record If...»150．阻尼笼最大磁密：«Skip Record If...»151．端环尺寸( )：«Skip Record If...»取1.5«Skip Record If...»«Skip Record If...»取0.5«Skip Record If...»图5.7 端环尺寸5.8 损耗与效率152．定子齿钢片重：«Skip Record If...»=48«Skip Record If...»=16.238«Skip Record If...»153．定子轭钢片重：«Skip Record If...»«Skip Record If...»=122.358«Skip Record If...»154．材料单位损耗： «Skip Record If...»（查资料可得）155．齿部单位损耗：«Skip Record If...»156．轭部单位损耗：«Skip Record If...»157．定子铁损耗：«Skip Record If...»«Skip Record If...»«Skip Record If...»«Skip Record If...»158．磁极单位表面损耗：«Skip Record If...»= «Skip Record If...»式中：«Skip Record If...»«Skip Record If...»«Skip Record If...»159．磁极表面损耗：«Skip Record If...»«Skip Record If...»«Skip Record If...»160．定子绕组铜损耗：«Skip Record If...»式中«Skip Record If...»161．励磁损耗：«Skip Record If...»«Skip Record If...»«Skip Record If...»式中«Skip Record If...»«Skip Record If...»——励磁系统的效率162．机械损耗：«Skip Record If...»=«Skip Record If...»«Skip Record If...»163．附加损耗：«Skip Record If...»164．总损耗：«Skip Record If...»165．效率：«Skip Record If...»5.9 瞬态参数和时间常数166．励磁绕组漏抗：«Skip Record If...»«Skip Record If...»«Skip Record If...»式中«Skip Record If...»167．励磁绕组电抗：«Skip Record If...»168．阻尼绕组直轴电抗：«Skip Record If...»«Skip Record If...»169．阻尼绕组横轴电抗（对于全阻尼）：«Skip Record If...»170．直轴瞬态电抗：«Skip Record If...»171．交轴瞬态电抗：«Skip Record If...»172．直轴超瞬态电抗：«Skip Record If...»=0.0749«Skip Record If...»173．交轴超瞬态电抗：«Skip Record If...»=0.0688=«Skip Record If...»174．励磁绕组电阻：«Skip Record If...»=«Skip Record If...»=«Skip Record If...»175．励磁绕组时间常数：«Skip Record If...»176．瞬变电流时间常数：«Skip Record If...»177．超瞬变电流时间常数：«Skip Record If...»178．负序电抗：«Skip Record If...»179．直流分量时间常数：«Skip Record If...»180．空载励磁持续短路电流倍数：«Skip Record If...»181．额定励磁持续短路电流倍数：«Skip Record If...»182．冲击电流短路倍数：«Skip Record If...»183．整步功率：«Skip Record If...»5.10 有效材料184．定子绕组铜重：«Skip Record If...»«Skip Record If...»«Skip Record If...»185．励磁绕组铜重：«Skip Record If...»«Skip Record If...»«Skip Record If...»186．定子硅钢片重：«Skip Record If...»«Skip Record If...»«Skip Record If...»。