表1C型XED鐵芯電源變壓器技術(shù)數(shù)據(jù)

1、表1 c型xed鐵芯電源變壓器技術(shù)數(shù)據(jù)鐵芯型號(hào)技術(shù)指標(biāo)空載特性線圈計(jì)算數(shù)據(jù)va1p2b1juvapc初級(jí)電壓u1=220v初級(jí)匝數(shù)每伏匝數(shù)aciici0v*awp2/p1ta/mm2%v*awa*10-3a*10-3a*10-3220v初級(jí)w0次級(jí)w0cm2xed10*20*161.450.6310.681 1.60 1.66101.420.225 6.441.02 6.52 304815.817.61.778201.840.9890.731 1.60 0.254 7.271.15 7.36 252.381.450.763 1.83 0.290 8.311.32 8.42 323.212.16

2、0.788 2.15 0.341 9.771.55 9.98 xed12*25*205.883.920.804 1.75 2.30 104.46 0.519 20.32.36 20.4 20529.3310.42.76257.915.750.824 5.04 0.586 22.92.66 23.1 3210.68.140.837 5.85 0.680 26.63.09 26.8 4014.511.50.848 6.77 0.788 30.83.58 31.0 xed16*32*2525.720.90.856 1.80 3.131012.1 1.19 54.95.43 55.2 11695.31

3、5.90 4.713235.329.40.864 13.8 1.36 62.76.20 63.0 4045.538.40.868 15.8 1.56 7177.0970.2 5057.749.10.871 18.2 1.80 82.88.1983.2 xed20*40*3274.263.10.870 1.80 3.90 1023.9 2.37 10910.8109 7483.40 3.787.364096.683.0 0.875 3.90 1027.0 2.67 12312.1123 3.78501361180.879 3.90 1030.9 3.05 14013.9141 3.7864167

4、1460.884 3.60 9.6836.2 3.58 16516.3165 3.76xed25*50*401951720.897 1.80 3.72 8.03 47.0 4.64 21321.1215 4792.182.7311.5502362110.907 3.35 7.22 53.0 5.24 24123.8242 2.35642932640.915 3.01 6.50 61.4 6.07 27927.7280 2.33803463140.919 2.86 6.16 70.9 7.02 32231.9324 2.32xed32*64*504434050.930 1.80 2.94 4.8

5、9 97.1 9.60 44143.6443 2921.881.40 18.8645475050.937 2.61 4.34 111 11.0 50449.8506 1.39806526050.941 2.41 4.01 127 12.5 57556.9578 1.381007877140.944 2.29 3.81 146 14.5 66465.7668 1.38xed40*80*649278700.949 1.75 2.32 3.20 155 18.1 70782.2711 1920.8740.903 29.480111710540.953 2.10 2.89 175 20.3 79692

6、.7802 0.900 100143513660.959 1.79 2.47 200 23.3 908106915 0.896 125174316640.962 1.64 2.26 231 26.8 10501221060 0.895 表2 r型變壓器鐵芯參數(shù)表型號(hào)容量（v*a）截面積（cm2)bm (t)變壓器效率（%）電壓調(diào)整率（%）電流密度（a/mm2)空載電流（ma)空載損耗（w）r-808101.20.23r-109151.81.77780172044.520.27r-2020282.271.7798114183.84.530.43r-26253530.43r-3030452.81.

7、7818311153.54.040.55r-35456050.56r-4035553.111.7828510133.33.850.63r-5050653.461.785899123.23.560.7r-80701003.831.6387908103.03.370.96r-100901304.831.658890892.83.281.24r-1601502005.21.648891782.63.0101.49r-2602003006.221.688991672.63.0121.92r-3202803806.981.78992672.53.0152.35r-600380620101.6909456

8、2.42.8203.65r-1000650120013.91.679195562.42.8286.21c型變壓器設(shè)計(jì)計(jì)算實(shí)例試設(shè)計(jì)一臺(tái)燈絲變壓器，其技術(shù)數(shù)據(jù)是：初級(jí)電壓u1=220v±10%，次級(jí)電壓u2=6.5v，次級(jí)電流i2=1.6a，電流頻率f=50hz,電壓調(diào)整率u10%，環(huán)境溫度55°c。計(jì)算變壓器容量p2.p2=i2u2=1.6×6.5=10.4w選擇鐵芯 根據(jù)計(jì)算的p2值選擇鐵芯，并查出對(duì)應(yīng)的鐵芯截面積ac,效率，空載磁通密度b1. 根據(jù)p2值，查表選用xed12×25×40鐵芯，p2=11.5w。 =0.848,b1=1.75t

9、,ac=2.76cm2.計(jì)算初級(jí)容量p1 p1=p2/=11.5/0.848=13.6w計(jì)算初,次級(jí)匝數(shù)w1,w2 初級(jí)線圈匝數(shù)計(jì)算公式見(jiàn)下表：表3 初，次級(jí)匝數(shù)參考表采用表1中的b1,u%時(shí)自行選擇b1,u%時(shí)w1=u1w0 w0=104/4.44b1acfw2=u2w0 w0=(1+u%)×w0w1=u1w0. w2=u2w0w0w0查表1可得。當(dāng) .u1=220v,f=50hz時(shí)，w1可直接查表1. wn=unw0采用表1中的b1,u%,u1=220v,f=50hz,由表1直接查得：w1=2052匝w0=10.4匝伏w2=u2w0=6.5×10.4=68匝計(jì)算空載電流

10、i0和初級(jí)電流i1空載電流和初級(jí)電流的計(jì)算見(jiàn)下表：表4計(jì)算空載電流和初級(jí)電流參考表采用表1中的b1時(shí) 自行選擇b1時(shí)鐵耗電流ic=pc/u1(a)磁化電流i=va/u1(a)空載電流i0=ic²+i²(a) 略va(磁化伏安)，pc查表1，當(dāng)u1=220v時(shí)，i,ic,i0可直接查表1.因采用表1中的b1值，u1=220v.查表1并按表中公式計(jì)算得：i=30ma. ic=3.58ma i0=31.0mai2=w2/w1 *i2=68/2052 ×1.6×10³=53mai=i2+ic=53.0+3.58=56.58mai1=i1²+i

11、²=56.58²+30.8²=64.4ma計(jì)算初，次級(jí)線圈導(dǎo)線截面積a1,a2,選擇線徑查表1得j = 2.3a/mm², 初級(jí)線圈導(dǎo)線截面積為 a1=i1/ j =64.4/2.3×10³=0.028mm²次級(jí)線圈導(dǎo)線截面積為 a2=i2/ j =1.6/2.3=0.695mm²查表得 d1=0.19mmd2=0.96mmr型變壓器設(shè)計(jì)計(jì)算實(shí)例技術(shù)條件：初級(jí)輸入：u1=220v±10%；f=50hz.次級(jí)輸出：u2=18v；i2=2a；電壓調(diào)整率u<15%。計(jì)算變壓器容量pp=u2i2=18

12、15;2=36va由表2可知，選擇r-30鐵芯計(jì)算變壓器初，次級(jí)匝數(shù)查表2得r-30鐵芯對(duì)應(yīng)參數(shù)磁感應(yīng)強(qiáng)度：bm=1.7t電壓調(diào)整率取：u=12% 根據(jù)公式，算得初級(jí)每伏匝數(shù)：w1u=104/4.44*bm*ac*f=104/4.44×1.7×2.8×50=9.463(t/v)次級(jí)每伏匝數(shù)： w2u=w1u/1u=9.463/112%=10.753(t/v)故初級(jí)匝數(shù)：w1=w1uu1=9.463×220=2082次級(jí)匝數(shù)：w2=w2uu2=10.743×18=193計(jì)算初，次級(jí)線徑次級(jí)反射到初級(jí)電流i2=w2/w1 * i2=193/2082

13、 ×2=0.185a=185ma鐵耗電流ic查表2得r-30的空載損耗pc0=0.55w則icic0=pc0/u1=0.55/220=2.5ma空載電流i0：查表2得r-30的空載電流i0=4ma初級(jí)總電流i1=i2+ic=185+2.5=187.5ma初，次級(jí)線徑查表2對(duì)r-30鐵芯，取電流密度j=3.8a/mm²d1=1.13 i1/ j =1.13× 0.1875/3.8=0.25mm d2=1.13 i2 / j =1.13× 2 / 3.8=0.82mm 袇膆膄葿羆裊荿蒞薃羈膂芁薂肀莇薀薁螀膀薆薀羂蒆蒂蕿肄羋莈薈膇肁蚆薇袆芇薂薇罿肀蒈蚆肁芅莄蚅螁肈芀蚄袃芃蠆蚃肅膆薅螞膈莂蒁蟻袇膄莇蟻罿莀芃蝕肂膃薁蝿螁莈蕆螈襖膁莃螇肆莆荿螆膈艿蚈螅袈肂薄螅羀羋蒀螄肅肀莆螃螂芆節(jié)袂裊聿薁袁羇芄蒆袀腿肇蒂衿衿莂莈衿羈膅蚇袈肅莁薃袇膆膄葿羆裊荿蒞薃羈膂芁薂肀莇薀薁螀膀薆薀羂蒆蒂蕿肄羋莈薈膇肁蚆薇袆芇薂薇罿肀蒈蚆肁芅莄蚅螁肈芀蚄袃芃蠆蚃肅膆薅螞膈莂蒁蟻袇膄莇蟻罿莀芃蝕肂膃薁蝿螁莈蕆螈襖膁莃螇肆莆荿螆膈艿蚈螅袈肂薄螅羀羋蒀螄肅肀莆螃螂芆節(jié)袂裊