BÀI BÁO CÁO THỰC TẬP-Tìm hiểu về xen-xin và hệ thống xen-xin
Bạn đang xem bản rút gọn của tài liệu. Xem và tải ngay bản đầy đủ của tài liệu tại đây (415.85 KB, 28 trang )
MỤC LỤC
!""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""#
I. $%&'()*+*(,*+*"""""""""""""""""""""""""""""""""-
1. %"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""-
2. ./012*+*""""""""""""""""""""""""""""""""""""""""""-
II. $%&'()$3456"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""7#
1. 89:2$3456"""""""""""""""""""""""""""""""""""""""""""""""""""""""7#
2. ;'(,<=2$3456"""""""""""""""""""""""""""""""""""""7#
3. >?2$3456""""""""""""""""""""""""""""""""""""""""""""""""""7@
4. &'0A*'""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""74
III. $BC'()D9?9""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""#7
1. E'/2D9?9""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""#7
2. 8'DFGH3%+9+2D9?9"""""""""""""""""""""""""""""""##
3. I%JD9?9"""""""""""""""""""""""""""""""""""""""""""""""""##
4. IKLD9?9""""""""""""""""""""""""""""""""""""""""""""""#-
Page1
LỜI MỞ ĐẦU"
,DD9M'F,KFNK'NEG,,
>0)'OPK'01L"L&L01L0QG,%
D0BO%/)',?R*'ENOS(P")':T0QIU0M'
*'E,%DK>L>VN(=WK>LED"""U
X0Q*'E'Y:$:X%/0ZN;20ZN
%D>%NFIS>%"""
[(T?9&%/%\2K'(,>IO]
0N,DD0Z>?'E0QY%1(9WC'9^9K'
0L'">^Z>?'E0Q9J,%>^C'9^
IUI'10(T?(_,K'001L"
Z>?'EG,>IF0B0=`O/,D?
O/K90LMZIO]>?'E0L(9W9'V%"
1IF0B0Z>?'EW^G,I1IF0Ba?
(+9+9b0&VI(T%D09'D)a+G+9%+bIF0B
0O9_'D_UIF0B`9:c"Z>?'E0:d<
OP919Q9M'F,>0/"L&K&0F
,K'%,90LLY<OP_'I&'2I1IF
0B>?'E:e9'D)010N>0:c?UNE'G'DfN
R%<N0V>%`C'8%gN99E)'FIS
>(,OVOPK"""$9Y=%M0VDN>F
/MZIO]>?'E0QLYFI1(:dI(,,D
,9J_,0QO]0F(F/I1IF0B,D,
g^N)';=(,Oh?ZOP"
$9c/.^(K'C'V?N+%0Q0:d^
<OPR%IF*+*9(0)'K&I%N
0(S9;LC'D(,?GL9_KRE0S"Ac<
OP(%/;d$345690)'K&01X0%1)'K;
`01G"i%*V,R%XMD'Dh;$(,MD>
9I1%>010Q:TO](,/%^0)'K0&+%
,,(TKFC'RE"
.,1N,D#77#=%#j77
k(_
Page2
NỘI DUNG THỰC TẬP:
I. Tìm hiểu về xen-xin và hệ thống xen-xin:
1. Khái niệm:
l+*amnopmqrbG,%1%D0*D)'G/gN0:dO[9
9'D)01I%89'D)0AI10&0(S9;LC'D8?
GL9_%1KRGT"
$EN*+*G,%1IFC'DL?K'9_'1
OVD9>(,?a:cG,%1(,INI9;G'7#j01be
l+*+E'9s0:d,#G/e
l+*F*se$99>LI9;'1OVD%18I"
0:(,a8GED9b9_'1OVD9>RC'(W
F*s"t?D0B09JF*s,D_G,%R%01;*(,01
D9C'9G,%("
l+*K>F*seu>0:dG,%IvGw?U`(,K>I9;
'1OVD9_L"'1OVD%18I0)'0:dI9;9_
?"1;*(,01DX*+*F*s:LK;:T
(,KG:dGTX"
2. Hoạt động của hệ thống xen-xin:
&(0?GLC'D9_%1KRGTN
*+*0:d(T',*+*"LF01/01
;2*+*e
F01IFx
F01yS"
".*+*9F01IF
kX0A'1OVD2*+*9F01IF&
9_77
Page3
βα
U
KT
R
H
U
XXphát XXthu
KT
Φ
E
1
E
3
E
2
I
1
I
3
I
2
E
1
E
2
E
3
y
E
y
.77".*+*F01IF
kX0A'1OVD9F01,De
l+*e'1OVD70:d(T0K;;*D
)'N9P9>2*+*0:d(T9PC'D0)'K&a9P201H
9P08b"
l+*'e$9P9>0:d(T9PC'D0:d0)'K&a9P
E,bN9_'1OVD70:d09zG(T?GL
C'DY9P201(,9PE,"
'1OVD-2*+*0:d`8(T'"
'D_U/01
KT
U
*D)'08(,'1OVD72*+*/9
`>0%/
KT
Φ
N`>,DR%<9_'1OVD-
?<001NzG(TLC'D
α
9P0)'K&e
( ) ( )
( ) ( )
−=−Φ=
−=−Φ=
=Φ=
00
3
00
2
1
240cossin240cos
120cossin120cos
cossincos
αωα
αωα
αωα
tEke
tEke
tEke
mKT
mKT
mKT
a7"7b
90Le
Page4
ω
M?20*D)'K;;x
α
LC'D9P0)'K&x
k
?zGx
m
E
9S?<001GTEN0/0:dK9P'1OVDK;
;9[(T9P'1OVD2`9'1OVD-"
?<001,D/909_0M'9'1OVD-
*+*e
1212
eee −=
N
2323
eee
−=
N
3131
eee
−=
{9S'OP0,De
( )
( )
−=
−=
=
0
3
0
2
1
240cos
120cos
cos
α
α
α
EE
EE
EE
a7"#b
0VD
E
9S'OPGTE"
0,D0:0F'1OVD-2*+*'"tW0
9'1OVD-2*+*/9O0,De
12
1
1
Z
E
I =
x
12
2
2
Z
E
I =
x
12
3
3
Z
E
I =
a7"-b
$90L
12
Z
G,B9J'1OVD-2#*+*aB9J
Y0&%
0
(,
*
0
b"
OW0
1
I
N
2
I
N
3
I
/_`>IF_
1
Φ
N
2
Φ
N
3
Φ
9
'1OVD-2*+*'"`>,D?\/9?<001
R%<9_'1OVD72*+*'e
Page5
( )
( )
−=
−=
=
0
3
'
3
0
2
'
2
1
'
1
240cos
120cos
cos
β
β
β
XIE
XIE
XIE
a7"@b
90L
X
09JR%<N?9O01:X|Y'1OVD-
(,'1OVD72*+*'x
β
LC'D9P9>*+*'"
k<001B19_'1OVD72*+*'e
'
3
'
2
'
1
EEEE
y
++=
a7"6b
Fd><a7"7b
÷
a7"@bN0:de
( )
θβα
coscos
2
3
12
ymy
E
Z
XE
E =−=
a7"b
9_0M''1OVD72*+*'e
θ
cos
my
UU =
a7"4b
8;2*+*/019F01IFe
$`><a7"4bED9vNKL?G
θ
Y9P9>2
*+*(,*+*'IvK>a
0
0=
θ
b0?G0M'9G,
GTE"VDG,0)'K>%%'0(T%1MZ0G:c?
GL"&0R%IR00M'9IvK>KL?GIv
K>MRC'DXK;%19*+*0%1LI0M'Iv
0
90
NK0Le
( )
θθ
sin90cos
0
mmy
UUU =−=
a7"5b
Page6
:(DN00M'99*+*F01IFzG(T
?GLC'DY9P201a(T9>*+*b(,9PE
,a(T9>*+*'b+C'DG',%?a7#b"
$`7#NED9vN9%1'K}2L?G
θ
N?\L
(S9;%,00M'9*+*0:d9SIvK>
a:X<(TL?G
0
0=
θ
(,
0
180=
θ
b"S9;
0
0=
θ
0:d^G,(S9;
VIvB0Sa(00M'9*'C'0&%,DL;N0:d
?ZOP99'D)01I%N?\L*':T0:L?GC'D9J
G/9SIvK>bx(S9;
0
180
=
θ
0:d^G,(S9;VIvK>B
0Sa(00M'9*'C'0&%,DL;N0:d?ZOP9
9'D)01I%N?\L*':TFP0:L?G9cKg0&%
,Db"$9C'9GU08*+*MR=y(,'
'~0&*0S0:d0&%VIvB0S"
U
y
0 90
180
270
360
.7#"8;*+*IF
?GL
θ
G,gNL&:e
( )
θθθθ
xxmmy
KUUU =≈= sin
a7"•b
(,,%9'D)a?9'D)b2*+*e
θ
y
XX
U
K =
€
0
V
• a7"7jb
Page7
:(DN9%1T/L?G
θ
gN*+*9
F01IFL&0:d*+%:%1KV'K'F0/(T?9'D)
XX
K
I".*+*#9Q
t,%?9'D)
XX
K
2*+*G,KgN:??
0L?G2*+*G,KGTa`
1,0
0F
75,0
01[D+E
;*2G/*+*b_9F:cO[*+*#
9Qa#-b"
.*+*#9QIA%9Q?XI1(R9Q;*"$9P
0)'K&(,9PE,2#9Q,D0:dG_XK;(T'C'
I1R%XK;(Tz?9'D)G,
q
a
1>q
b"00M'929Q
?XI1(,9Q;*0:d0:(,XE''D&%/a#@b"‚P
'1(,9S0:X<L?G%,XE''D&%/?\
0:0GED`0M'99Q?XI1800M'99Q;*0F
FISF+"
Page8
U
KT
R
H
U
I
1
I
3
I
2
cx
U
KT
R
H
U
I
1
I
3
I
2
ss
α β
q
q
q
β
αq
.7-".*+*9Q
,%(2*+*9Q?XI1:X:*+*%1
9Q"(T9Q?XI10:d00M'9e
( )
θθθθ
XXSBmmySB
KUUU =≈= sin
a7"77b
(,?9'D)9Q?XI1e
θ
ySB
XXSB
U
K =
a7"7#b
(T9Q;*NO
SBCX
q
αα
.=
(,
SBCX
q
ββ
.=
NO0Le
( ) ( ) ( )
θθβαθθ
mmCXCXmCXmyCX
qUqUUUU ≈=−== sinsinsin
a7"7-b
(,?9'D)9Q;*e
Page9
XXSB
yCX
XXCX
qK
U
K ==
θ
a7"7@b
:(DN?9'D)9Q;*GTE
q
GM?9'D)9Q
?XI1"$9C'9/01NI0M'KL?GGTNG,%
((T0?GGED`9Q?XI1(,R%OML?G"L?
GR%0F%19S,0LNFIS'D&%/?\G,%((,
G,%((T0GED`9Q;*a76b"t01O08'DF
9Q;*GTE
q
GM08'DF9Q?XI1_9S0?G
0:d=G_(,LKZIgL?GNI%
0AI1"
U
ss
U
cx
U
cx
U
ss
360
o
180
o
0
90
q
o
.7@"8;9Q?XI1(,9Q;*
U
U
ss
U
cx
90
o
0
.76"'D&0B0?G`9Q?XI1?9Q;*
Page10
uw9,9vN0&(I%0AI1D_'M'I1'D&
%/G,%(KL?G
q
0
90
≤
θ
"
".*+*9F01yS
F01yS2*+*0:dO[0&C'D0AI1(,y
S9SLC'D9_%1KRGTa7b"
$9F01ySN'1OVD7(,-2*+*(,
*+*'0:d:?'e
'1OVD72*+*(,*+*'0:dK;;
IJ[%10*D)'a97#G,'1OVD?b
'1OVD-2#*+*0:d(T'`0>%1
a9(\G,-'1OVD9>b
XXPhát XXThu
I
1
Φ
KT
Φ
KT
α
β
I
2
I
3
~U
KT
0
0
Page11
.7".*+*F01yS
'D_U/01
tOVD2#*+*:(D_?<0019_%|8
'1OVD9'1OVD-G,'??<0010L9_`'1
OVD2*+*(,*+*'e
( ) ( )
( ) ( )
−
−
×
×
−
+
=−−−=−=∆
−
−
×
×
−
+
=−−−=−=∆
−+
=−=−=∆
0
000
3
'
33
0
000
2
'
22
1
'
11
240
2
sin
240
2
sin2240cos240cos
120
2
sin
120
2
sin2120cos120cos
2
sin
2
sin2coscos
βα
βα
αβ
βα
βα
αβ
βαβα
αβ
EEEEEE
EEEEEE
EEEEEE
a7"76b
?<001,D?9OWVIv9'1OVD-
99>2#*+*"$01:X|2,Mv%2
G`LB129>(,OW`>?2*+*'/9
%>%+0`0AI1"L?G
βαθ
−=
L9SgN9S
%>%+0:d*0Se
θθ
mm
MMM
≈≈
sin
a7"7b
{9SGTE2%>%+0AI1e
22
2
7,0
q
m
Xr
X
E
M
+
≈
ω
a7"74b
90L
E
9SGTE?<001'OP9_7x
q
r
(,
q
X
'M9J(,R%K2'>OVD9>*+*'+9P"
Page12
>%+0`,DG,%C'D9>*+*'+:T0:L?G()
9SIvK>N<G,G,%0AI1(S9;9>2#*+*"
II. Tìm hiểu về TCA 785:
$3456G,(%/;dOQk+%+?F/N0:dO[0&
0)'K&FISyG:'NFIS0)'K&OW*D&'"VD
G,(%/;dI<=2%1%/0)'K&e)0M'
00AI1N/09=:0AI1N??(,/*'9=:"
1. Đặc trưng của TCA 785:
- th('D&C'0&%K>"
- ‚/%(<OP919Q"
- L&O[G,%'D&%/0&%K>"
- $:X;k"
- L&/01Ia-
?
b"
- tW09#6j%3"
- )OOWGT"
- tR0191"
0)'K&,DL&0)'K&0:dD9?N9N9??"
l'K;%J0:dL`j
j
75j
j
"ƒOP_'I&'9%/
'D&0BNI10)'K&3(,I10)'K&OWI"
,DDF9:T0VDG,$345j(,$345jt"
2. Kí hiệu và chức năng của TCA 785:
Page13
.#7e?X0AV$3456
Page14
.##eE'9s$3456
Page15
V ;' <=
7 {t 0E
# M'9#0R
- M'9!
@ M'970R
6
k„
0AI1
$;'E%
4 …
†
M'9†
5
ui‡
'~
• u
•
9J/%/9=:
7j
7j
$P/%/9=:
77
77
0)'K&
7#
7#
$P/0191*'
7- $;'0)'K&*'UN*'O,
7@ …
7
M'97
76 …
#
M'9#
7
k
'A'>
3. Các thông số của TCA 785:
$>? ;' {9ST
/
X(S
*
'E
k
j"6 75
tW09/V7@N76
…
7j @jj
T/
j"6
k
0)'K&
77
j"6
k
U*'
7-
j"6
k
tW0(,0AI1
6
#jj ˆ#jj ‰3
9/V7@N76
…
k
tW9/V#N-N@N4
…
7j
9/V#N-N@N4
…
k
01F
01EY
$
Š
$
?
66 76j
7#6
j
j
$9J H %>
9:c
u
k3
75 ‹Œ
•tR/01e
'E
k
5 75
$M?G,%( ‡ 7j 6jj .
†
01%>9:c $3 #6 56
j
•8;e
5
≤
k
≤
75x#6
≤
$
3
≤
56
x•Ž6j.
†
$>? ;
'
{9ST/ X(S
/
K&%
9
$D *
Page16
$_'POW'E
77
Žj
7j
Ž@4‡Nu
•
Ž7jj•
k
@"6 "6 7j 7
V0AI16
tW(,0I[K
u
#
IF0B
$
69%?
•
6
-j
-j
#jj
46
‰
(
7
@
V0)'K&
tR00)'K&
9J(,
77
u
77
j"# 76
7j
•
7
6
•>R<=e
$;'0AI1L0:dC'9JK`0OVDa
6
b"1
0K>?\*0S0K>(,'D&s0F
0AI1"
$0AI1,D0&'K&I1/OaG,%O*';'
0)'K&bNP
7j
9I1/O0L0:d/(TOW0Sa*0S
IJu
•
b"F'0Oa09=:N%b
7j
(:dC'0
0)'K&
77
aL%Jb;'0'D&,O/P'1
(,01GT200)'K&
77
%,L%JL&0:dOS'D&
9KR`aj
j
75j
j
b
T%|‘M?L%1*'O:X<-j?G/*'E0M'9
…
7
N…
"
{Y?A/*'L&0/75j
j
C'P
7#
"F'V7#%??
*'9KRLaj
j
Ž’75j
j
b?\*'"
0M'9
−−
Q
7
N
−−
Q
#
'E;':d(T…
7
N…
#
"$;'/
“75j
j
L&0:dO[0)'K&%1I1,L/V-"
1;':X<(TG_KF”u2…
7
N…
#
L?•/Z…
–
aV4b"
B(,/FL&0:dO[0&G/9J/012B
9 …
7
N…
#
−−
Q
7
N
−−
Q
#
"
Page17
V7-L&O[0&%J910M'9
−−
Q
7
N
−−
Q
#
v%GE0MD01
91*'a75j
j
b"
4. Biểu đồ xung:
Page18
• ‚/%(/01e
• Y089:e
5≤
k
≤75xH#6—≤$
3
≤56—x•Ž6j.–
$%? ;
'
Y9ST/ X
(S
&%
9
%/
" $D" *"
'E_'Pc
k7"""k%J
77
Žj
7j
Ž@4‡Nu
•
Ž7jj•
k
@"6 "6 7j %3 7
V0AI1L6
tW0:(,
u
#
D0B
M%
69%?
6
-j
-j
#jj
46
‰3
%3
7
@
V0)'K&77
‚/%(00)'K&
(,?
77
u
77
j"#
76
7j+K
7
6
•89:e
5
18≤≤
s
V
x
CTC
A
00
8525 ≤≤−
x•Ž6j.–
$%? ;' Y9ST/ X
(S
&%
9
%/
1IF0
tWD0B
%*
IQW9_P
7j
7j
7j
7j
7jj ##6
7jjj
#
#
-6j
‰3
%
7
7"
Page19
'E
k
5 75
$M?/01 ‡ 7j 6jj .–
01%>9:c $
3
#6 56
j
F9J
$cA*'
9=:
u
•
•
-
5j
-jj •
‰k
7
7
VQ%V
'D&%/V4
U0M'9
f0M'9
$c'D&;
'
tW(,
Ž5
tW(,
Ž7"4
.
9
.
@
7
5j
-"-
-"-
6jj
76j
#"6
6
6jj
#jj
‰k
‰3
‰3
7
7
7
7
7
k_G2
j
u
•
Ž?
k
Ž7#x
7j
Ž@4‡
k_G
7j
u
•
Ž?
k
Ž5T75
k_G20
D0BJZ'K
?'
k
Ž?
7j
7j
•
7j%*
6
#j
ˆ7
6
#j
˜
˜
˜
7
7
l'O,KV7-
0:d(Tk
5
l'UJa/b0M'9
l'O,0M'9
(,c
7-
Ž5
(,c
7-
Ž7"4
7
7-
7
7-
-"6
@6
#"6
#"6
6
#
7j
7jj
‰3
‰3
7
7
7
7
V0M'9#N-N@N4
tW:d
j
Ž
?
IQW
j
Ž#%3
ij
?
j"7 j"@
7j
#
‰3
#"
#"
• Y089:aFbe
5≤
k
≤75xH#6—≤$
3
≤56—x•Ž6j.–
Page20
$%? ;
'
Y9ST/ X
(S
&%
9
%/
" $D" *"
V0M'97@N76
.0M'9
…
Ž#6j%3
0M'9
…
Ž#%3
191*'a*'
Ub
k
•
%J
191*'a*'
Ub
T
7#
7@‹76.
7@‹76
k
H-
j"-
#j
6-j
k
H#"6
j"5
-j
#j
k
7"j
#
@j
4j
‰k
‰k‹
‡
-"
#"
7
7
)'K&09
%KR
F??aL&b
27j?
$20%KR
ui‡
™
ui‡
#"5 -"7
#*7j
@
-"@
6*7j
@
7‹
7
7
Page21
III. Tổng quan về thyristor:
1. Cấu tạo của thyristor:
$D9?9W0:d^G,kuakGGH9GG+Ou+š+9bG,G/
GK@GT‚H08*+K\'"
kX0AE'9sNK;'N?X0A:X0:X(,E'/D9?90:d
9I,D9-7e
H.3.1a. H.3.1b H.3.1c
H.3.1d
3e
eK
{e0)'K&
Page22
Š
7
NŠ
-
e%8F0;
Š
#
e%8F9'
."-"7e?X0AK;'ku
."-"7Ie?X0AE'9s@GTku
."-"7e?X0A%>E'/ku
."-"7Oe?X0A:X0:Xku
2. Đặc tuyến Volt – Ampere của thyristor:
."-"#H8'DF(G%+9+2D9?9
%*
e9S0/OW'
!
e0'
!
e0:d
!
O
e002
eOW:d
Page23
j
eOW9WC'D9?9
O
eOWO'D9
•! e09X9_D9?9
3.Các biện pháp mở thyristor:
III.1 01e
F'01D9?9=N?G:d0ZO?\=G_N
O]0FOW09W
j
=G_"k=OW9W,DG,%?9'D)0
;™
7
N™
#
=(,D9?90:d%J"JD9?9Iv:X,D
:cK>0)'K&0:d?/D|G/2OW_:c
0:dG/Ig"
III.2 Fe
F'VD9?9Iv%10FGTX00
2!
O
D9?9%J"$'D_:X,D?\G,%D9?9IS
g_K>OP
-"-$01=0aO'‹Obe
F'01=0'08G_3O(,OW0
;2P0FLKR=%JD9?9"$'D_OW0;
GT,DL&gD9?9(,FISIR("$>:c01
=0O'‹O:cO,?R*'EC'D0S"
-"@tW0&'K&{e
D9?90QV'0:OW0)'K&O:X08
(,{›D9?9O]NOW
{
,=!
O
,
R%"
4.Khóa thyristore
LD9?9<G,9RL()9/I0M'9:TK%J(T
0MD02;EL&O)'K&0:d2L"L:XKL
D9?9e
Page24
- {R%OW0'8U'A'E"
- 80:dG_D9?9"
…'9KLD9?9:?'e
080:dG_D9?9a."-"-bFŠ
7
NŠ
-
'D&
OS:dNWŠ
#
'D&OS'"tOP209:c,
G|99GT‚
#
/DC'Š
-
()O(,9GT
7
G|9/D
C'Š
7
()O/_OW0:d/DC'RN0/,DZ
j
7
a."-"-Ib"G|9IS_'FŠ
7
(,Š
-
a2DF'G,Š
7
b=R
K>0;FPRDC'NOW0IU0M'0:dR%*'N`
7
H
#
^G,cKLD9?9"
$cKL,D:cKfO,E5H7jGMc,%J"
Page25
