求助,变压器场路耦合的问题
我做的就是用场路耦合模拟一个单相变压器的变比分析,在低压侧加30000伏50Hz的交流电压,高压侧接一个100欧的电阻
命令流如下
KEYW,MAGNOD,1
!Part 1:intializing the parameter of geometry and properties,
Rc=1.51/2 !铁心半径 ;
Hc=3.49 !铁心高度;
Rh1=2.044/2 !高压绕组内半径;
Rh2=2.384/2 !高压绕组外半径;
h1=2.05 !高压绕组高
Wh=Rh2-Rh1 !高压绕组宽
Rl1=1.574/2 !低压绕组内半径;
Rl2=1.824/2 !低压绕组外半径;
l1=2.08 !低压绕组高
Lh=Rl2-Rl1 !低压绕组宽;
Nh=508 !Turns of high winding;
L=4.28 !变压器长;
H=3.720 !变压器高;
W=3 !变压器宽;
Nl=32 !Turns oflow winding;
Hw=2.25 !内窗高
Ww=0.595 !内窗宽
R1=0.000003 !绕组电阻率
R2=0.000003 !油箱电阻率
R3=0.000003 !磁屏蔽电阻率
!Part 2:建立2维变压器模型
/PREP7
Rectng,0,Rc+Ww+Rc,-Hc/2,Hc/2
Rectng,0,L/2+0.022,-H/2-0.022,H/2+0.022 !磁屏蔽
Rectng,Rc,Rc+Ww,-Hw/2,Hw/2 !右内窗,铁心
Rectng,Rh1,Rh2,-h1/2,h1/2 ! 高压绕组
Rectng,Rl1,Rl2,-l1/2,l1/2 !低压绕组
AOVLAP,ALL
NumCmp,All
!Part 3:定义材料、单元
ET,1,PLANE53 !空气,铁心,油
ET,2,PLANE53,3, !高压铰线圈
ET,3,PLANE53,3, !低压铰线圈
ET,4,PLANE53,0, !油箱和磁屏蔽(算涡流)
MP,MURX,1,1 !油;
Mp,Murx,2,8000 !铁心
UIMP,3,MURX,RSVX,,1,R1 !高压线圈
UIMP,4,MURX,RSVX,,1,R1 !低压线圈
MP,MURX,5,1
r,1,Wh*h1,Nh,3.14*(Rh1+Rh2),1,1 !高压线圈单元的实常数
r,2,Lh*l1,Nl,3.14*(Rl1+Rl2),1,1 !低压线圈单元的实常数
ASEL,s,area,,1 !1号面高压线圈1
AATT,3,1,2
ASEL,s,area,,2 !2号面低压线圈2
AATT,4,2,3
Asel,S,area,,3 !
AATT,5,,4
Asel,S,area,,4 !
AATT,2,,1
Asel,S,area,,5 !
AATT,1,,1
!Part 4:划分单元网格
!part4.1:划分线圈
LSel,S,,,13
LSel,A,,,15
LSel,A,,,17
LSel,A,,,19
Lesize,All,,,30
LSel,S,,,12
LSel,A,,,14
LSel,A,,,16
LSel,A,,,18
Lesize,All,,,5
Asel,s,area,,1
Asel,A,area,,2
MShape,0,2D
Mshkey,1
Amesh,All
Allsel,All
!part4.2:划分铁心,空气油,油箱,磁屏蔽
Asel,s,area,,3
Asel,A,area,,4
Asel,A,area,,5
ESIZE,,30,
MShape,0,2D
Mshkey,0
Amesh,All
Allsel,All
!part4.1:细分磁屏蔽和油箱
Allsel,All
Lsel,s,,,1
Lsel,A,,,2
Lsel,A,,,3
!LREFINE,all,,,1,
! LREFINE,all,,,1,
!Part 5: 场路耦合;
!part5.1:高压侧1
Allsel,All
Et,50,Circu124
R,50,0.000000001
Et,5,Circu124,5 !高压铰线圈;
R,5,1
Et,6,Circu124
R,6,100
N,,-6,1
N,,-6,2
N,,-7,1
N,,-7,2
*Get,Nmax,Node,0,Num,Max
Type,6
Real,6
E,Nmax,Nmax-1 !Independent Current Source element;
Type,5
Real,5
E,Nmax-2,Nmax-3,241!Stranded Coil element(To FEM domain)
Type,50
Real,50
E,Nmax,Nmax-2
E,Nmax-1,Nmax-3
NSEL,S,NODE,,Nmax-1
D,ALL,VOLT,0 !电压零点约束
!part5.3:低压侧1
Allsel,All
Et,7,Circu124,5 !低压铰线圈;
R,7,1
Et,8,Circu124,4,1
R,8,,30000,50
N,,6,1
N,,6,2
N,,7,1.5
N,,7,1
N,,7,2
*Get,Nmax,Node,0,Num,Max
Type,8
Real,8
E,Nmax-1,Nmax,Nmax-2
Type,7
Real,7
E,Nmax-3,Nmax-4,888!Stranded Coil element(To FEM domain)
Type,50
Real,50
E,Nmax,Nmax-3
E,Nmax-1,Nmax-4
NSEL,S,NODE,,Nmax
D,ALL,VOLT,0 !电压零点约束
Allsel,All
!Part6:耦合自由度
ESel,S,Mat,,3 !线圈
NSLE,S
CP,1,CURR,ALL
CP,2,EMF,ALL
Allsel,All
ESel,S,Mat,,4 !线圈
NSLE,S
CP,1,CURR,ALL
CP,2,EMF,ALL
Allsel,All
!Part 7: 加边界条件
ESEL,ALL
NSEL,EXT ! Select exterior nodes
D,ALL,AZ,0 ! Set potentials to zero (flux-parallel)
ALLSEL,ALL
FINISH 不过求解的结果不正确,
高压跟低压线圈的电流却是一样的,根本看不出变比的效果
高压侧电阻的两端电压很小。
请大家帮我找一下错误,感激不尽 把高压侧的电阻去掉试一试
已解决
问题出在我耦合绞线圈自由度的时候我吧四个两个线圈分开耦合就正确了 原帖由 xiaodong_hust 于 2007-5-14 17:00 发表 http://www.simwe.com/forum/images/common/back.gif
!Part6:耦合自由度
ESel,S,Mat,,3 !线圈
NSLE,S
CP,1,CURR,ALL
CP,2,EMF,ALL
Allsel,All
ESel,S,Mat,,4 !线圈
NSLE,S
CP,1,CURR,ALL
CP,2,EMF,ALL
Allsel,All
把后面的CP,1,CURR,ALL
CP,2,CURR,ALL
换成 CP,3,CURR,ALL
CP,4,CURR,ALL
应该就对了吧 楼主命令流怎么修改的 希望解答下 感谢 给练习这个案例的人提个醒,这个命令流中的,
Rectng,0,L/2+0.022,-H/2-0.022,H/2+0.022 !磁屏蔽
这里的 !是中文的,调试的时候改成英文的!
Type,6
Real,6
E,Nmax,Nmax-1 !Independent Current Source element;
这个注释不对吧,高压端有电源?况且还是6号单元。
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