contents.kocw.netcontents.kocw.net/KOCW/document/2014/honam/youyongmin/5.pdf · 서로 직렬 연결된 개의 육면체 양 단자간의 자기저항을 구하라. 이 때 b는 육면체
Post on 30-Aug-2019
1 Views
Preview:
Transcript
8-6
(1) ()
- , .
- : H J , H
J
B-H
- : , , ( )
- , B J
- B H
- () : ()
8-10
(2) (hysteresis loop)
- (): B H
- ():
- (): 0
- : , , : ,
8-11
(3) ()
- = (B)
[J/m3] (8-19)
- 1[s] f[Hz]
Wm (8-20)
- v , 1[s] f[Hz]
W
- ,
:
-
Jm (8-21)
-
Wm (8-22)
8-12
f=60[Hz] . (, =30[cm2] Hc=7.5[AT/m], Br=1.5[Wb/m2] .
0 5 10 15H
B
+Br
+Hc-Hc
-Br
8-12
[] 1 . V[m3], f[Hz]
W
8 .5
8-7
- : ,
: ,
8-13
- 8-13
S
N
I
C
l
dlH
- i[A] H
ATm (8-23)
- B 8-13
- 0 B
Jm (8-24)
-
J (8-25)
4000 0.1[Wb/m2] [J/m3] .
[] (8-24)
[J/m3]
.
8 .6
8-8
S
N
I
C
l
dlH
8-14
(1)
AT (8-26)
- F
ATm (8-27)
[Wb] (8-28)
AT (8-29)
ATWb (8-30)
- (8-29), (8-30) (8-28) , ohm
Wb (8-31)
H[AT/m] E [V/m]
[AT] V[V]
[Wb] I[A]
R m [AT/Wb] R []
B [Wb/m2] i[A/m2]
[H/m] k[/m]
8-2
1000[AT]
510-5[Wb] .
[] (8-31)
ATWb
. 0.5[m2], 0.8[m], 20. [AT/Wb] .
[] (8-31)
ATWb
8 .7
8 .8
(2)
1)
- :
- : (, )
2) () - : 1020
- : 102~104
3) () - :
- :
4)
- : (+) (-)
- :
8-9
(1)
-
0 (KCL)
(8-32)
S
N
I
C
l
dlH
. (KVL)
- KVL
- KVL
(8-33)
(2)
-
(8-34)
-
(8-35)
3 . B
. 1=5000, 2=20000,
3=30000, S=1510-4[m2], l1=100[mm], l2=200[mm], l3=300[mm].
[] (8-34)
ATWb
8 .9
(3)
-
ATWb (8-36)
ATWb (8-37)
ATWb (8-38)
8-15
Wb (8-39)
-
ATm (8-41)
ATm (8-42)
(8-43)
( )
- ,
AT (8-44)
AT (8-45) AT (8-46)
, l, S[m]
l2 ?
[] Rm1, Rm2
ATWb
ATWb
ll2
ATWb
8 .10
top related