<s>
An	O
induction	B-Algorithm
generator	I-Algorithm
or	O
asynchronous	B-Algorithm
generator	I-Algorithm
is	O
a	O
type	O
of	O
alternating	O
current	O
(	O
AC	O
)	O
electrical	O
generator	O
that	O
uses	O
the	O
principles	O
of	O
induction	O
motors	O
to	O
produce	O
electric	O
power	O
.	O
</s>
<s>
Induction	B-Algorithm
generators	I-Algorithm
operate	O
by	O
mechanically	O
turning	O
their	O
rotors	O
faster	O
than	O
synchronous	O
speed	O
.	O
</s>
<s>
Because	O
they	O
can	O
recover	O
energy	O
with	O
relatively	O
simple	O
controls	O
,	O
induction	B-Algorithm
generators	I-Algorithm
are	O
useful	O
in	O
applications	O
such	O
as	O
mini	O
hydro	O
power	O
plants	O
,	O
wind	O
turbines	O
,	O
or	O
in	O
reducing	O
high-pressure	O
gas	O
streams	O
to	O
lower	O
pressure	O
.	O
</s>
<s>
An	O
induction	B-Algorithm
generator	I-Algorithm
draws	O
reactive	O
excitation	O
current	O
from	O
an	O
external	O
source	O
.	O
</s>
<s>
Induction	B-Algorithm
generators	I-Algorithm
have	O
an	O
AC	O
rotor	O
and	O
cannot	O
bootstrap	O
using	O
residual	O
magnetization	O
to	O
black	O
start	O
a	O
de-energized	O
distribution	O
system	O
as	O
synchronous	O
machines	O
do	O
.	O
</s>
<s>
After	O
starting	O
an	O
induction	B-Algorithm
generator	I-Algorithm
can	O
use	O
a	O
capacitor	O
bank	O
to	O
produce	O
reactive	O
excitation	O
current	O
,	O
but	O
the	O
isolated	O
power	O
system	O
’s	O
voltage	O
and	O
frequency	O
are	O
not	O
self-regulating	O
and	O
destabilize	O
readily	O
.	O
</s>
<s>
An	O
induction	B-Algorithm
generator	I-Algorithm
produces	O
electrical	O
power	O
when	O
its	O
rotor	O
is	O
turned	O
faster	O
than	O
the	O
synchronous	O
speed	O
.	O
</s>
<s>
The	O
basic	O
fundamental	O
of	O
induction	B-Algorithm
generators	I-Algorithm
is	O
the	O
conversion	O
from	O
mechanical	O
energy	O
to	O
electrical	O
energy	O
.	O
</s>
<s>
Ideally	O
,	O
induction	B-Algorithm
generators	I-Algorithm
work	O
best	O
in	O
the	O
stable	O
region	O
between	O
the	O
no-load	O
condition	O
and	O
maximum	O
torque	O
region	O
.	O
</s>
<s>
In	O
induction	B-Algorithm
generators	I-Algorithm
,	O
the	O
reactive	O
power	O
required	O
to	O
establish	O
the	O
air	O
gap	O
magnetic	O
flux	O
is	O
provided	O
by	O
a	O
capacitor	O
bank	O
connected	O
to	O
the	O
machine	O
in	O
case	O
of	O
stand-alone	O
system	O
and	O
in	O
case	O
of	O
grid	O
connection	O
it	O
draws	O
reactive	O
power	O
from	O
the	O
grid	O
to	O
maintain	O
its	O
air	O
gap	O
flux	O
.	O
</s>
<s>
Induction	B-Algorithm
generators	I-Algorithm
are	O
often	O
used	O
in	O
wind	O
turbines	O
and	O
some	O
micro	O
hydro	O
installations	O
due	O
to	O
their	O
ability	O
to	O
produce	O
useful	O
power	O
at	O
varying	O
rotor	O
speeds	O
.	O
</s>
<s>
Induction	B-Algorithm
generators	I-Algorithm
are	O
mechanically	O
and	O
electrically	O
simpler	O
than	O
other	O
generator	O
types	O
.	O
</s>
<s>
An	O
induction	B-Algorithm
generator	I-Algorithm
connected	O
to	O
a	O
capacitor	O
system	O
can	O
generate	O
sufficient	O
reactive	O
power	O
to	O
operate	O
on	O
its	O
own	O
.	O
</s>
<s>
)	O
:	O
induction	O
machine	O
consumes	O
power	O
form	O
gird	O
instead	O
of	O
delivering	O
it.The	O
load	O
must	O
be	O
removed	O
and	O
the	O
induction	B-Algorithm
generator	I-Algorithm
restarted	O
with	O
either	O
a	O
external	O
DC	O
motor	O
,	O
or	O
if	O
present	O
,	O
residual	O
magnetism	O
in	O
the	O
core	O
.	O
</s>
<s>
Induction	B-Algorithm
generators	I-Algorithm
are	O
particularly	O
suitable	O
for	O
wind	O
generating	O
stations	O
as	O
in	O
this	O
case	O
speed	O
is	O
always	O
a	O
variable	O
factor	O
.	O
</s>
<s>
Unlike	O
synchronous	O
motors	O
,	O
induction	B-Algorithm
generators	I-Algorithm
are	O
load-dependent	O
and	O
cannot	O
be	O
used	O
alone	O
for	O
grid	O
frequency	O
control	O
.	O
</s>
<s>
induction	O
electrical	O
machine	O
in	O
an	O
asynchronous	B-Algorithm
generator	I-Algorithm
regime	O
)	O
as	O
asynchronous	B-Algorithm
generator	I-Algorithm
.	O
</s>
<s>
For	O
a	O
machine	O
to	O
run	O
as	O
an	O
asynchronous	B-Algorithm
generator	I-Algorithm
,	O
capacitor	O
bank	O
must	O
supply	O
minimum	O
4567	O
/	O
3	O
phases	O
=	O
1523	O
VAR	O
per	O
phase	O
.	O
</s>
