50 netic poles of.claim is— 105^
1. such case the result would
be similar that produced generator the
65 armature and field-magnets which are ro
tated opposite directions, and reason of
these conditions the ráotor-arraature will turn
at rate speed equal the sum the
speeds the armature and magnetic poles of
the generator, that comparatively low 70
Speed the generator-armature will produce
a high speed the motor. the generator; hence the speed
of the motor-arinatnrewill depend allcases
upon the relative speeds the armature of
the generator and its magneticpoles. practice have ob
served the presence slight currents, the ex-
20 istence ofwhich attributableto moreorless
pronounced fluctuationsin theintensify the
magneticpoles the generator-ring. Consideringthe operative conditionsof
a System thus established, will foundthat
io when the exciter driven so.ondingto and connected withthe energizing-
coils the generator, set forth.
practicability. movement,of the magnetic poles the annu
li; lar field-core the generator, the shifting or
rotary movement said poles being synch
ronous with the rotation the exciter-arma?
tare. '
What I. For
example, the poles are turnedtwbthousand
55 times per unit time and the armature is
turned eight hundred, the motor will turn
twelve hundred times, nearly so. coils F
15 the generator-armatnre closed upon
themsělVes short-circuited, currents, at
least theoretically, will generated the
Said armatnre-coils.
It will observed connection with this
system that diminishing the resistance of
the external circuit the generator-armature 75
by checking the speed the motororbyadd
ing translating devices multiple arc the
secondarycircuitorcircuits thetransformer
'the strength the current the armature-
circuit greatly increased.
It will-be understood from the above de* 95
scription that the generator-armature may be
run thbdirectioP ofthe shifting the mag
netic poles, but more rapidly, and that such
case the speed the motor willbe equal to
the difference between the two rates. For -
similar reasons the currents the armature- 90
coils the generator increase very rapidly
when the speed the armatureis rednoed:
when running the same direction the -
magnetic poles orconversely. iod
In manyapplicationstoelectricalconversion
and distribution this system possesses great
advantages both economy, efficiency, and .as energize
; the field the generator the armature the
latterfif left free turn, would rotate a
speed practically the same that the ex
citer.
45 The effective strength thecurrents devel
oped the armatnre-coils of:the generator is
dependent upon the strength the currents
energizing the generator and upon the num
ber rotations per unit time the mag-. The combination,with alternating-cur
rent generator baviqg independent energizing
or field and independent induced arma
ture coils, alternating -current exciter-,
having generating induced coils corre- a
sp.ro-
30 tation the poles the field:becomes rela
tively more rapid, currents will inducedin
the armature-coils. If, the eop-
trary, the speed the generator-armattffe be
in any way checked,so thatthe shiftingbr. Thisis due td'O 80
causes: first, the great differences the
speeds the motor and generator, and, sec
ondly, the fact that the apparatus follows
the analogy transformer, for, propor
tion the resistance the armature sec* .
2.
3.. results from this that the
operationof the exciterproducesaprogressive
.BESTAVAILABLECOP'
ft 390. alternating-current generator, the •
combination the elements named and co
operatively associated^in the following man- U5
ner: field-maguet wound with independent
coils rach connected witha sourceof alteřnat- ;
ingcurrents, whereby the magnetic poles pro
duced said coils will progressively
shifted moved through the field, and 120
armature-rare wound with independent coils, ,
each-having terminals from which currents
are delivered tbe independentexternal cir
cuits. The system ofelectrical distribution con- 125
sisting the combination,,-with alternat
ing’
-current generator-haying independent
energizing-coils'and^an armatnre wound with
independent induced cbils^ufan.
ondary circuits reduced, thestrength the
cqrrentS the field orprimary circuits ofthe
generator increased and the-currents the
armature augmented correspondingly.m
the other coils O
' the exciter and of
the generator. This obviously follows
from the passing'of the lines force, across
the armature -conductors.
60 Let now assumedthatpower applied
to the generator-armature turn di
rection opposite that which its magnetic
póies rotate. So, if
the armature-coils closed through the
motor, the latter will ndtbe turned longas
25 the movement the generator-armature is
synchronouswith that the exciter the
maguetič poles its field. The greater the
35 speed rotation the magnetic poles rela
tively that the armature the more rap
idly the currents developed the coils the
latter will follow one auQther, and the more
rapidly the motor will revolve response
40 thereto,and this continues until the armature-
generator stopped entirely, brake,
when the motor, properlyconstructed, runs
at fhe same speed with which the magnetic
poles the generator rotate.alternating-
current exciter having indnced'-eoilgcorre- 130
spondiug toand connected with the ener^zing-
coils the generator, and one more eleari-
cal converters having independent inducing
or energizing cqíIs connected with the corre-
. Very
slight differencesof speed may indicatedby
a delicately-balanced motor. under such conditions the.
