i
BO
CONG THU'ONG
TONG CONG TY TB
DIBN
VIETNAM
CONG TY CP
Kill
CU DIEN I
CONG HOA XA
HOI
CHU NGHIA
VIET
NAM
Doc
lap
- Tu do -
Hanh
phuc
San tdy. ngdy 03
tJiang
11
ndm2009
BAO
CAO THUYET MINH
DE
TAX
I<HOA
HOC VA CONG NGHE CAP BO
.X,
Nghien cuu, thiet ke va hoan thien thiet bj, cong nghe che tao

vi thuc hien
;GIAM
Ks.Nguyen
Luong
Tung
^,^
sw.
•«^«
i^-^fV
W't
1112
-766/1
MUC
LUC
Trang
Ldi noi ddu 5
Phdn
1.
Nguyen ly hoat dong den HPS 2 cap cong suat 9
Phdn
11.
Thiet ke che tao Balat 2
cAp
cong
suSt
150
W/lOO
W - 220 V 13
II.
1.

tao 26
II.2.
Trien khai thiet ke va che tao khuon mau 29
11.2.1.
Khuon ep cac chi tiet
nliua
29
11.2.2.
Khuon dap cat dot cac chi tiet kim loai 30
Phdn
111.
Thiet ke bo
chuyen
doi cong suat 32
111.1.
Phan tich nguyen ly hoat dong
lira
chon phuang an thiet ke 32
111.2.
Thiet ke ra le thai gian 2
miic
4h - 5h theo phuong an tao dao dong diing dien
tra va tu dien (R-C) 32
111.2.1.
Lira
chgn linh kien chinh 32
111.2.2.
Cac chi tieu thiet kl 33
111.2.3.
Sa do mach dien ra le thai gian 2 che do 4h - 5h 33

rap 51
V.l.
Gia cong chi tiet 51
V.1.1.
Gia cong chi tiet nhua 51
V.1.2.
Gia cong chi tiet kim loai 54
V.2.
Lap rap 55
V.2.1
Lap rap balat 55
V.2.2 Lap rap bo chuyen doi cong suit 58
V.2.3 Lap rap bo khai dong 59
Phdn
VI:
Thii'nghiem
va hieu
chinh
60
VI.1.
Balat 2 cap cong suat 60
VI.2.
Bo chuyen doi cong suat. 61
VI.3.
Bo khai dong 64
Phdn VII: Ket qua dat
duo'c
65
VII.l.
Hinh dang ngoai quan 65

tieu thu dien nang, cac
san pham
ciia
Cong ty chu yeu la thiet bi dong cat
va thiet
bi ho trg trong chieu sang.
Mac
dii
vay cac san pham tren
ciia
Cong ty quyet
dinli
dang ke den hieu suat sir dung
thiet bi tieu thu nang lugng. Ban than san pham
ciia
Conj.'
ty trong qua trinh tham gia
hoat dong ciing tieu thu mot lugng nang lugng rieng nho. Nhan thirc dugc tam quan
trong tren, trong tinh toan thiet ke va che tao Cong ty ciing chu trong den nhung bien
phap de tang hieu qua
ciia
thiet bi tieu thu dien, dong thoi giam thieu toi da mirc tieu
thu rieng. Trong cac san pham cua Cong ty, dac biet la cac loai Balat cho den huynh
quang, balat cho den Natri cao ap Cong ty de cao den hieu qua
ciia
tiet kiem nang
lugng. Nam 2007 Cong ty don nhan 02 san pham dugc
dc.n
nhan tiet kiem dien do Bo
Cong Thuong trao;

ciia
bong den trong khi do nhu cau
chieu
sang lai giam. De giai quyet tinh
trang nay nganh chieu sang cong cong dua ra nhieu giai p'aap thiet thuc
nliam
giam bat
mirc
tieu
thu dien:
5/72
* Cat bat chieu sang : Sir dung che do chieu sang ngat quang (diing
1
den va cat
bo 1 den). Bien phap nay de thuc thi, tiet kiem 50% nang lugng chieu sang, song co
nhieu bat cap: Mat do chieu sang khong deu, khong dam bao an toan giao thong va an
ninh duang pho.
* Giam bat dien ap sau
giof
cao diem: Sau
giof
cao diem dien ap chieu sang
thuang bang hoac qua dien ap dinh
miic
(> 220 V). Nguai ta diing thiet bi dieu chinh
dien ap dua dien
luai
bang hoac lan hon 92% dien ap dinh
miic chiit
it va khong

timg den de quan ly va thay the cac vat tu, thiet bi het thai han sir dung, giup tang hieu
qua quan ly.
* Sir dung bo dieu khien 2 cap cong suat, day la giai phap
cue
bo, moi mot den
sau
11
hoac
12
gia dem, tu giam cong suat nha co balat 2 cap cong suat va bo chuyen
dii
cong suit. Bo dieu khien 2 cap cong suat cung giong
nliu
dieu khien
1
cap, thay the
ballat 1 cip cong suit bing balat 2 cap vai bo chuyen doi cong suat tu dong dat gia.
Phuang an nay dan gian de lip dat, dau tu khong ton kem, khong can dong bg, hieu qua
tilt kiem cao giam 30 % den 40 % dien tieu thu khi chuyen doi cong suat. Hien nay c6
nhilu nuac trien khai
chS
tao va sir dung balat 2 cap vai mirc cong suat 150 W/100 W,
250
W/150
W va 400 W/250 W.
6/72
Tinh uu
vi^t
khi sv dung bo Balat hai cap cong suat:
1.

tieu thu cua moi dem
ig ciia
balat mot cap cong suat
Tir do thi hinh
1
ta c6 the tinh cong suat tieu thu cua den
150W:
Vai 5 h chieu sang dau tien, tong cong suat sir dung ciia balat
150
W la:
5hxl50Wx92%
=
690W
Vai 6 h chieu sang tiep theo, toi da cong suat sir dung cua balat
150
W la:
6hxl50WxllO%
=
990W
T6ng
cong suit su dung trong mot nam cua balat
150
W thong thuang la:
(690 W + 990 W)
X
365 ngay =
613.200
W = 613,2 kW
110%
100%

T(g
9h 24h
._ .6h
io-)
Hinh
2: Bieu dd tieu thu dien nang cua balat hai cap cong suit
7/72
>
r
f ' m '
Tir do thi Hinh 2 ta thay, viing vach mau do
(
) bieu thi cong suat sur dung chieu
sang, ciing nhu viing hoat dgng
ciia
balat 1 cap cong suat
150
W thong thuang. Viing
vach mau xanh
(
) bieu thi cong suat tiet kiem dugc khi su dung balat 2 cap cong
suat
150
W/100
W. Vai balat 2 cap cong suat, tong cong suit su dung cho chieu sang
trong
1
nam nhu sau:
- Vai 5 h chieu sang dau tien, tong cong suat su dung cua balat 2 muc cong suat
150 W/100 W la: 5 h

Cuang do anh sang
luon
dugc phan bo dong deu.
3.
Tang cuang
tu6i
thg cho thiet bi chieu sang (day dan,b6ng den, Balat)
4.
Giam 6 nhilm moi truang, phat thai khi de tao ra lugng dien nang tiet kiem
dugc.
Vdi lai ich cua ba lat 2 cap cong suat, xet ve nang luc che tao tai cong ty.
Ban lanh dao quyit dinh triin khai
thih
kk & chi tao ba lat 2 cdp cong sudt 150
W/100 W, tren
car
sd da chi tao ba lat 1 cdp cong sudt,
Bg
chuyin ddi cong sudt
cung
hgrp
tdc vdi vien Ndng
luffng
thuoc vien Khoa hgc vd Cong nghe Viet nam
thiit ki chi
tao,
Bg khdi dgng se
do
phong R&D nghien ciru thiit ki vd chi tao tai
cdng ty, todn bg cong viec tren dang ky lam di tai

P1/P2
* Den
Pl
la den co cong suat dinh mirc
PI
(W) tuong ung vai Balat hai cap cong
suat vai mirc cong suat cao
nliat
la
PI
(W).
* Bg khai dgng
chi
lam viec khi bat dau cap dien, luc do dien ap rai tren 2
cue
cua
den tir 2,8kV den 5kV gay phong dien.
* Balat 2 cap cong suat ban chat la balat lam viec
a
che do dinh
miic
co dau noi
tiep them cugn
kliang
phu, co the lam viec dugc 2 che do tren cimg 1 bong den.
* Bg chuyen doi cho phep dong dien di qua tuang duang vai dong khai dgng
Ion
nhat cua den, dong se giam dan va on dinh khi tra ve hoat dgng a dinh muc.
* Lap them tu
bii

Dien ap tren den (V)
•
Balat nhu cugn khang co nhiem vu dat dien ap len den
lOOV,
den se tieu thu
150 W
(cong suat dinh mirc
ciia
den).
Klii
chuyen sang cong suat thap, tong tra khang (cuon khang chinh va phu)
ciia
balat dat dien ap tren den khoang 73V, den lam viec voi cong suat
105W
3.
Nguyen ly lam
vice
ciia bo chuyen doi cong suat
RO LE CHUYEN MACH
BO GIAM
AP
VA
NAN
DONG
10/72
Bg chuyen doi cong suat ban chat la rale hen gia, su dung nguon
dien
mot chieu.
Bg dem thai gian dugc cai dat theo gicr
Ih-2h-3h

- Qua 2
dilt
zener dua dien ap vao
cue
G cua triac
- Triac ma xuit hien dien ap khoang 120 V a sa cap cua bien ap xung
BAX
- Diu thu cip dat dien ap 2,8 - 5 kV
tiiy
theo thiet ke. Trong nira chu ky duang
ciia
tin
s6,
khi den phong dien trong thai gian rat ngan
liic
do dien ap rai tren G =0, nhiem
vu
ciia
bg khai dgng da hoan thanli.
- Dong dien tilp tuc chay
true
tiep qua cugn thir cap.
11/72
class="bi xab yf7 w8 h1f"
PHAN II
_ _THIET
ICE BALAT 2 CAP CONG SUAT 150 W/100 W - 220 V
II.
1 TRIEN KHAI THIET KE
II.l.l

Idiai
dgng bang
klioang
1,5 lan dong dien lam viec.
D Nhay cam vai dao dgng cua dien ap nguon. Bien doi dien ap nguon gay len thay
doi dong qua den.
- Balat kilu biln ap:
NIU
dien ap
nguin
thip han 2 lan dien ap
ciia
den (nhu voi den
Natri ap suit thip) phai cin may biln ap. Giai phap tot nhat
ciia
truang hgp nay la ket
hgp chirc nang
ciia
may bien ap va cugn khang thanh mot thiet bj. May bien ap ket hgp
hoat dgng cua cugn thu cip nhu cugn khang. Thanh phan tu c6 the can de nang cao he so
cong suit. Balat
bifin
ap cho den Natri ap suit thip co day
dii
chirc nang
ciia
mot thiet bi
khai dgng. So sanh vai balat dien cam binh thuong thi balat bien ap co
mi
diem la dien

Natri ap suat cao. No
g6m
balat
bi6n
ap va mot tu mac noi tiep vai den. Diing tu de on
dinh cong suat khi dien ap
nguIn
dao dgng. No co hai chirc nang, la balat va dam bao he
so cong suat.
iTu
diem la dong dien qua den hau nhu khong bi anh huong khi dien ap
nguon thay doi den
10%,
mach co he
s6
cong suat tot, dong khai dgng thap. Nhugc diem
la cong suat ton hao tren may bien ap cao, thiet bi nang va dat.
Lua
clion baldt
sdt
tie cho den
phong dien cudng do cao:
No hoat dgng tren nguyen tac tu cam. Balat phai dugc chgn
phii
hgp vai dien ap
nguon va tan so, loai den va dien ap cua den, de dam bao dong qua den la gia tri diing.
Noi
each
khac, moi dien ap nguon, moi loai den yeu cau balat rieng vai dac tinh dien cam
dugc dat.

thiet ke
tinh
toan balat sat tir cho den Natri cao ap
1.
Cff so ve ly thuyet:
Cung nhu cac loai balat sat tir
kliac,
vice
thiet ke tinh toan dua tren co so tinh toan
thiet ke cugn khang chua bao hoa va cac thong so phu thuoc vao dac tinh
ciia
den Natri
cao ap.
Gia tri tinh toan quan trgng nhat cua viec thiet ke balat la gia tri he so tu cam hay la
gia tri tra khang
ciia
cugn khang. Gia tri nay phu thuoc vao so vong day cua cugn day,
dien tich
cue
tir va do rgng cua khe ho khong khi. Ngoai ra de toi uu hoa thiet ke, trong
tinh toan ta phai ke den do tang nhiet cua cugn day ciing
nliu
ton hao
ciia
cugn khang.
Dilu do dugc the hien bang viec tinh chgn kich ca day quan va kich thuoc mach tir. Tinh
toan nay co
thi
dugc hieu chinh de
phii

ciia
den:
Chii
ylu dua vao dac tinh V-A
ciia
den vi khi lam viec den dugc
coi nhu dien tro phi tuyen doi vai mach dien.
-Diem dac tinh dinh
miic
(a dien ap va dong dien dinh mirc cua den - gia tri nay
tham khao tir thong
s6
den
ciia
nha san xuit) dugc diing de tinh toan so bg. Cu the, ta se
lay gia tri dien
trd ciia
den tai dilm dac tinh dinh mirc de suy ra gia tri so bg he so tu cam
ciia
balat.
b. Cdc cong thuc tinh todn ca bdn:
- Cong thirc tinh he so tu cam cua cugn khang:
L =
WlG(l)
Trong do: L la he so tu cam
ciia
cugn khang (H).
W la so vong day cua cugn day (vong).
G la tir dan mach tir (H).
- Cong thiic tinh tir dan khe hd khong khi (theo Phuong phap phan chia tir trudng):

Y2
tru rong (m,a) + 2 Tir dan
Vi
tru rong (m,b) (H).
= (1-2)5.
G54 : 4 Tir dan
I/4
cau rong (2m+5,5) (H).
a,b: Kich thudc
cue
tir (m).
5:
Khe hd khdng
klii
(m).
m
•
Gso = Po-a.b/5
D
Gg,
= 2(0,26.po-a)+2(0,26.po-b)
D
Gg2
=
4.0,077.po.5
D
Gg3
=-2.2.po(a+b)/(7r(5/m+l))
•
G84

_
1 la chieu dai day quan (m).
q la tiet dien day quan
(m").
- Cong thirc tinh chieu dai day quin

1
=
l,b-W
(4)
Trong dd :
1
la chieu dai day quan (m).
lib
la chieu dai trung binh mdi vong day (m).
W la sd vong day (vong).
_4(a,+b0 +
27rl,
ai,bi
la chieu rgng va chieu dai phia trong cugn day (m).
li
la be day cugn day (m).
-Cdng thirc tinh tdn hao tren cugn day :
Pcu =
l'.R
(5)
Trong dd :
Pcu
la
tin

P
la he sd phu thudc vao loai thep.
- Cdng thiic tinh toan do tang
nhiet:
At =
Pcu/(KT.ST).
(7)
Trong dd : At la do tang nhiet d
bl
mat cugn day
(°C).
Pcu
la tdn hao tren cugn day (W).
KT
la he sd toa nhiet bing ddi luu va birc xa (
Kj =
6-14
W/m^°C).
S
r la
dien tich toa nhiet
ciia
cugn day
(m^)
16/72
n.1.3
Tinh toan
thiet
ke
A. Tfnh toan

ciia
mach den Natri cao ap bao gdm: dien trd phi tuyen
ciia
den, dien trd cua
cue
den, trd khang va dien trd
ciia
balat, dien dung
ciia
tu
bii
(neu cd). Khi tinh toan so
bg,
ta coi mach dien lam viec
ciia
den chi gdm thanh phan dien trd cua den va trd kliang
ciia
balat, cac thanh phan cdn lai dugc coi la rat nhd va bd qua.
Vdi gia tri dien trd
ciia
den, ta coi den la thuan trd tai mdi thdi diem nhat dinh, ta
lay gia tri dien trd tinh toan cua den ma tai dd den cd cac thdng sd dinh mirc (cdng suat
dinh mirc, dien ap va ddng dien dinh
miic).
Gia tri dien trd dd la:
R^
=
Ud/Id =
100/1,8
=

klidng
khi, ta tinli toan so
bd sd vdng day quan nhu sau:
•
W
=M
B:
Tir thdng mach tir. Chgn B = 0,75T.
5:
Khe hd khdng khi. Chgn
5=1.10"^
m.
I: Ddng dien
ciia
mach dien (qua Balat).
Po:
He sd tir thim khdng khi,
Po =
47i.
10"''
H/m
Trong dd:
17/72
Vay:
fF„(250fF) =
-^^^^Hi^
=
331,6(v6ng).
l,8.4.;r.l0-\
Chgn

(l.h):
11,5
mm x 24,5 mm.
Cue
tir:
a = 21 mm.
H
24
11.5
a
Tir dan mach tir chinh dugc tinh gan dung bang tir dan khe hd khdng khi. Va tir dan
khe hd khdng khi dugc tinh toan so bd la (vdi
Wi):
Gg
=
L/W,^
=
iXJl.n.r)/
W,^
=
(99/2.3,14.50)/340^
=
2,73.10-^
(H).
Tiet dien cue tir:
Sg
=
G8.5/(po.a).
Trong do: a la he sd tir tan. Chgn a = 1,03.
S5 =

I)
n
=
— =
165
(la) Chon sd la thep la n = 165 la
0,5.10"'
Khi dd b =
85.10"^m
vdi he sd ep chat la
K^
= 0,97.
Vay kich thudc khung tir nhu sau:
Chieu cao: H = 46 mm.
Be ngang:
^^
Chieu dai: b = 85 mm.
18/72
a
X
h
'^
X
B.
Tinh toan kiem tra:
Kiem tra Baldt lam viec d mivc cons sudt
ciia
den
150
W:

cue
tir (m).
5:
Khe hd khdng khi (m).
Ggo
=
Po-a.b/5
=
471.10-^21.10"l85.10"Vl.10"^
=
2,24.10"^
(H).
Gg|
=
2(0,26.poa)+2(0,26.po-b) = 2(0,26.471.10"^21.10'^)+
2(0,26.4::.
10-^.85.10-^) =
6,93.10"^
(H).
Gg2
=
4.0,077.p„.5
=
4.0,077.
471.10-^.1.10'^
= 3,87.10"'° (H).
Gg3
=
2.2.po(a+b)/(7r(5/m+l))
= 2.2.

khiing
cuon day:
XL
=
27if.L
=
27T.50.WIG5
=
27r.50.340l
2,42.10"'' = 97,8
(Q).
3.
Tfnh dien trd cuon day:
- Cdng thirc tinh chieu dai dav quan:
l = l,b.W
Trong dd:
1
la chieu dai day quan (m).
Itb
la chieu dai trung
binh
mdi vdng day (m).
W la sd vdng day (vdng).
, 4(a,+b,)
+
27il,
lb
Q
ai,bi
la chieu rdng va chieu dai phia trong cugn day (m).

a, =a+0,5 = 21 + 0,5 = 21,5 (mm).
b|
= b + 8 = 85 + 8 = 93 (mm).
,,. ,
4(21,5 + 93) +
2;r.ll,14
„»,.
,^3,
s n or/i
Vay:
1,^
=-^^—
—
=
0,264.10
(mm) = 0,264m.
1 =
Itb.W
= 0,264.340 = 90(m).
- Cdng thirc tinh dien trd cudn dav:
Rdt
=
Pfl/q
Trong dd:
Rdt
la dien trd cugn day d nhiet do t
(Q).
Pl
la dien trd suat day quan d nhiet do t (Q.m).
1 la chieu dai day quan (m).

6. Thong so mach dien:
-Dien ap tren Balat:
Ub
=
Zb.I =
(Rd'
+
Xj)"'.I
=
(4,98'
+ 97,8')"'. 1,82 =176,05 (V).
-Dien ap tren den:
Ud
=
Rd.I =
55,56.1,82= 101,1 (V).
7. Ton hao tren Balat:
-Ton hao ddng:
Pcu
=
l'.Rd=l,82'.4,98=16,5(W).
-Tdn hao sat:
Ppe ~ Po-G,Ti
Trong dd:
Ppe la
tdn hao sat (W).
po la suit tdn hao (W/kg).
Gpi
la tdng khdi lugng mach tir (kg).
Po =

Chgnk=
1,28.
B la mat do tir thdng
ciia
mach tir (T).
B =
I.W.Gg/Sg
=
1,82.340.2,42.10"V(21.10"l85.10"^)
= 0,838 (T).
f la tan sd mach dien (Hz), f = 50 Hz.
Tra dugc
pi/50
= 2,5 W/kg.
Po
=
k.p,/5o.B'.(f750)P
= 1,28.2,5.0,838'.
1
= 2,25 (W/kg).
Vay:
Ppe =
Po-G^
= 2,25.1,536 = 3,45 (W).
-Tdng tdn hao tren Balat:
P = Pcu +
Ppe
= 16,5 + 3,45 = 19,95 (W).
8. Do tang nhiet:
- Cdng thirc tinh toan do tang nhiet: .

= 18824,11
(mm') =
0,01882 m'.
Vay: At = 16,5/(14.0,01882)
=
62,7
CQ.
Thoa man dilu kien cho phep d cap
each
nhiet B: At = 65
°C.
Nhiet do
cue
dai cho phep
ciia
cugn day d cap B la:
Tw
=130
°C.
9. He so cong suat:
-He so cdng suat
ciia
mach khi chua cd tu:
coscp
=
Ud,r/U
=
(Rd
+
R<i).I/U

I(C).sin(pb
neu tu
bii
qua.
Hoac
Ic
= I.sincp -
I(C).sin9b
neu tu
bii
tdi.
Chgn gia tri tu de mach dugc
bii
tdi vi khi dd gia tri dien dung se nhd hon va ddng
dien qua tu cung nhd hon. Vay
Ic =
I.sincp -
I(c).sin(pb
=
1,82.(1-0,5')"'- 1,01.(1-0,9')'^
= 1,134 (A).
Khi dd trd dung
ciia
tu
bii
la:
Zc
=
U/Ic
= 220/1,134 = 194,05 (Q).

2,42.10"^
= 125,63 (Q).
3.
Tfnh dien trd cuon day:
- Cdng thirc tinh chieu dai day quan:
l = ltb.W
Trong dd:
1
la chieu dai day quan (m).
l,b la chieu dai trung binh mdi vdng day (m).
W
la
sd vdng day (vdng).
_4(a,+b0 +
27il,
hh
^
ai,bi
la chieu rdng va chieu dai phia trong cugn day (m).
1]
la be day cugn day (m).
22/72
a, = a + 0,5 = 21 + 0,5 = 21,5 (mm).
b,
= b + 8 = 85 + 8 = 93 (mm).
Ii
= 11,5-0.5.= 11 (mm).
Vay:
i.^
=i(lb^±^ll±^£:ll =

dn dinh:
Z = ((Rd +
Rd)'
+
XL')"'
Theo khao sat va bing nhiing thuc nghiem, dl den Natri cao ap
1OOW
hoat
ddng vdi cdng suit 150W thi ddng dien qua den la I =
1.5A;
img vdi dien trd
tire
thdi la 60 Q.
Z
=
((Rd +
Rd)'
+
XL')"'
= ((5.61+60)' + 125.63')"' = 141,73 (Q)
5. Dong dien
lam
viec ciia mach dien (qua Balat):
I =
U/Z = 220/130,6 =1,55 (A).
6. Thong so mach dien:
-Dien ap tren Balat:
Ub
=
Zb.I

(W/kg).
Gm
la tdng khdi lugng mach tir (kg).
Po =
k.p,/5o.B'.(f750)P
k la he sd gia cdng thuc nghiem.
B la mat do tir thdng
ciia
mach tir (T).
23/72
f la tan sd mach dien (Hz).
Pi/50
la suat tdn hao thep d tin sd tir hoa f = 50Hz va B = 1 T.
P
la he sd phu thudc
vapjoai
thep.
Tinh chgn cac dai lugng tren:
Gm =
Vm.ype-
Troug
dd: Trgng lugng rieng
ciia
sit
•y^e
=
7,85.10''
kg/m^
Vm
=H.L.b.0,97-2.1 l,5.24.b.0,97=45.65.85.0,97-

Pcu
+
Ppe
=
13,48
+ 3,2 =
16,69
(W).
8. Do tang nhiet:
- Cdng thirc tinh toan do tang nhiet:
At =
Pcu/(KT.ST).
(7)
Trong dd: At la do tang nhiet d be mat cugn day
(°C).
Pcu la
tdn hao tren cudn day (W).
KT
la he sd toa
nliiet
bang ddi luu va
biic
xa (
KT
= 6-14
W/m'.°C).
ST
la dien tich toa nhiet
ciia
cudn day (m').

=130
"C.
9. He so cong
suat:
-He sd cdng suat
ciia
mach khi chua cd tu:
coscp = Ud,,./U =
(PH,
+
Rd).I/U
= (5,61 + 60).l,55/220 = 0,46.
24/72
11
-
;
He sd cdng suat cua mach khi cd tu
bii:
Khi dd he sd cdng suit
ciia
mach
la
coscpb.
Chgn tu
bii:
Theo so dd tren ta cd
I.COS9
=
I(C).eoscpb.
De he sd cdng suat

=
I.sing
-
I(C).sincpb
=
1,55.(1-0,46')'^'
- 0,79.(1-0,9')"'
= 1,03 (A).
Khi dd trd dung
ciia
tu
bii
la:
Zc =
U/Ic
=
220/1,03 = 213,195 (Q).
Vay
giii
tri dien dung C =
l/(27if.Zc)
=
1/(271.50.213,195)
=
14,94.10"^
(F).
Chgn tu
bii
vdi dien dung C =
17pF

25112
2.
Thong so cuon day:
'
- -
Day quin e may d/d' = 0,7/0,815 (mm).
SO
vdng day:
W1/W2
= 340/385 vdng.
Chieu rdng phia trong:
ai
= 21,5mm.
Chieu dai phia trong:
bi
= 93 mm.
Chieu cao:
h|
= 23,5 mm.
Be day:
li
= 11 mm.
3.
Thong so dien:
;
1 1
Thdng sd \ Cap cdng suat
Ddng dien lam viec (Khdng tu) (A)
Ddng dien lam viec (Cd tu) (A)
Tdn hao (W)

lira
chgn cd kha nang tim kiem de dang tren thi tmdng
b.
Trien khai thiet ke
Ban ve tdng quan va chi tiet
{06
'l-
^y-\
QO
(01)f I )(02)
/
\
•
y
A
4
y
/\
/ \
\
i
<B>
(H)
HPSS150/100
0-1.1
t-V
1?
COw.Sijil
^
0(.N