"
"
"
c
c
c
???7ccc???
@
@
@èèè???2
?7.3? ?Ms?è?￥è
^s.,,,,,,,,,,,,,,,,,,2
?7.3.25.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,2
?7.4? ?Ms?è?￥ D?+?.,,,,,,,,,,,,,,2
?7.4.15.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,2
?7.4.25.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,3
?7.4.45.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,4
?7.5? ?Ms?è?￥ ?.,,,,,,,,,,,,,,,,,,,,,5
?7.5.25.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,5
1
7???
@
@
@èèè???
7.3 ? ? ?MMMsss???èèè???￥￥￥èèè
^
^
^sss
7.3.2
μB
150Hz1425r=min￥ ?Ms?è?0èER2 = 0:02?
? FX20 = 0:08?E1=E20 = 10?E1 = 200V
H
k p(1)è? ?
S
§
W(n = 0;s = 1)0
Mè
^￥è?
]E20è
@I20?
qy
cos’20 (2)-?

H￥E2I2cos’2b1?

? f ?/0è
^￥ò?t ?

è?
]a
qa? Faè
@#?
qy
￥vlb
[333]
(1) ?
S
§W
E20 = E110 = 20010 V = 20V
I20 = E20pR2
2 +X220
= 20p0:022 +0:082A = 243A
cos’20 = R2pR2
2 +X220
= 0:02p0:022 +0:082 = 0:243
(2)-?
H
SN = 1500?14251500 = 0:05
E2 = sE20 = 0:05￡20V = 1V
I2 = E2pR2
2 +(sX20)2
= 1p0:022 +(0:05￡0:08)2A = 49A
cos’2 = R2pR2
2 +(sX20)2
= 0:02p0:022 +(0:05￡0:08)2 = 0:98
f2 = sf1 = 0:05￡50Hz = 2:5Hz
7.4 ? ? ?MMMsss???èèè???￥￥￥   DDD???+++???
7.4.1
X?Y100L1?4?s?è?￥
t-?/
?/
2:2kW 380V??¤E
1420r=min cos’ = 0:82 · = 81%
k9
(1)Mè
@Lè
@￥-?′#-?μ
H￥  (2)-?μ
q#-
?μ
H￥0è
@
qb
!è÷
q150Hz.
[333]
2
(1)Lè
@￥-?′
I1N = P2Np3U
l cos’￠·
= 2:2￡10
3
p3￡380￡0:82￡0:81A = 5A
Mè
@￥-?′
IpN = IlN = 5A
-?
TN = 9550P2Nn
N
= 9550￡ 2:21420N ￠m = 14:8N ￠m
(2)-?μ
q-?μ
H￥0è
@
q
sN = 1500?14201500 = 0:053
f2 = sNf1 = 0:053￡50Hz = 2:65Hz
7.4.2
μ
?Ms?è? -?
11470r=minè÷
q150Hzba. 
?
§Wb.0
1]?
￥23
Hc.μ
q10:02
H ?? f ?/
k p
(1)?0èH??0￥
n1?1;
(2)?0èH?0￥
n1?2;
(3)0èH?0￥
n2?2;
(4)0èH??0￥
n2?1;
(5)0èH??0èH?￥
b
[333]
0èH??0èH?
^?]BZ_ bWèb
?0èH??0
' bW￥M
n1?1 = n0 = 60f1p %???0è
@￥
qf1 ] ?0èH?0￥M
n2?2 %??0è
@￥
qf2'
n2?2 = 60f2p = 60sf1p = sn0
?0'
&
^[n￥
 bW?
?Z_DH?èZ_M]?
^
0èH??0￥M
1
n2?1 = n2?2 +n = sn0 +(1?s)n0 = n0
3
?N Vn?
0
n??v0èH??0èH?9
^[]B

 bWè"b
?￥M
1
,b
a,n = 0;s = 1
(1) n1?1 = n0 = 60f1p = 60￡502 r=min = 1500r=min
(2) n1?2 = n0?n = (1500?0)r=min = 1500r=min
(3) n2?2 = sn0 = 1500r=min
(4) n2?1 = n0 = 1500r=min
(5) 0
b,n = 23 ￡1500r=min = 1000r=min;s = 1500?10001500 = 13
(1) n1?1 = n0 = 1500r=min
(2) n1?2 = n0?n = (1500?1000)r=min = 500r=min
(3) n2?2 = sn0 = 13 ￡1500r=min = 500r=min
(4) n2?1 = n0 = 1500r=min
(5) 0
c,s = 0:02;n = (1?s)n0 = 0:98￡1500r=min = 1470r=min
(1) n1?1 = n0 = 1500r=min
(2) n1?2 = n0?n = (1500?1470)r=min = 30r=min
(3) n2?2 = sn0 = 0:02￡1500r=min = 30r=min
(4) n2?1 = n0 = 1500r=min
(5) 0
7.4.4
X?Y132S?4? ?Ms?è?￥-?/
?/
?
q
èar
q?
qy
Ist=IN Tst=TN Tmax=TN
5.5kW 1440r/min 380V 85:5% 0.84 7 2.2 2.2
è÷
q150Hzb
k p-?
/￥μ
qsNè
@IN TN[# ?
è
@Ist ? TstKv Tmaxb
[333]
" -4? 100kW￥s?è??X
!91380V ??? ó2
[ ?¤Z
T
^
??￥b?9
'5
Hò???
^? ó2b
(1)y1nN = 1440r=min V
?]?
n0 = 1500r=min
5H
1
p = 60f1n
0
= 60￡501500 = 2
4
-?μ
q
sN = n0?nn
0
= 1500?14401500 = 0:04
(2)-?è
@·?0Lè
@'
IN = P2p3U
N·cos’
= 5:5￡10
3
1:73￡380￡0:84￡0:855A = 11:6A
(3)-?
TN = 9550P2n
N
= 9550￡ 5:51440N ￠m = 36:5N ￠m
?i,
T?P2￥?ê1kW
(4) ?è
@
Ist = (IstI
N
)IN = 7￡11:6A = 81:2A
(5) ?
Tst = (TstT
N
)TN = 2:2￡36:5N ￠m = 80:3N ￠m
(6)Kv
Tmax = (TmaxT
N
)TN = 2:2￡36:5N ￠m = 80:3N ￠m
7.5 ? ? ?MMMsss???èèè???￥￥￥   ???
7.5.2

1 ?Ms?è?￥-??
q130kW-?èa1380V ??? ?
¤
q150Hzb-?μ/?
H μ
q10:02r
q190%Lè
@157:5AiX?TstT
N
= 1:2IstI
N
= 7b ?T?¨1òMa ?a ?7
Pè
?￥ ? 1-? ￥85%
k p(1)1òMa ￥M1 (2)è?￥
?è
@L
^
￥ ?è
@ò1
$
[333]
è?￥-?
nN = (1?s)n0 = (1?0:02)￡1500r=min = 1470r=min
-?
TN = 9550￡ 301470N ￠m = 194:9N ￠m
5
(1)?¨1òMa ?a ?7
P ? 1-? ￥85%'
T0st = 194:9￡85%N ￠m = 165:7N ￠m
7°¤ ?
H
Tst = 1:2TN = 1:2￡194:9N ￠m = 233:9N ￠m
y ? Dèa￥
üZ??1#Ma ￥M11
K =
s
Tst
T0st =
r233:9
165:7 = 1:19
(2)è?￥ ?è
@'1 ?
H1òMa =Q§￥è
@
I0st = IstK = 7￡57:51:19 A = 338:2A
L
^
￥ ?è
@'1 ?
H1òMa BQ§￥è
@
I00st = I
0
st
K =
338:2
1:19 A = 284:2A
6
7