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Патент USA US2088289

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juiy 2-7, 1937.
P. CIBIE
2,088,289
VOLTAGE REGULATING APPARATUS FOR ELECTRIC CURRENT GENERATORS
Filed JUIIQ 12, 1954
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INVENTO/E
PIERRE C, 8,5
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Patented July 27, 1937
2,088,289
UNITED STATES
PATENT OFFICE
2,088,289
VOLTAGE REGULATING APPARATUS FOR
ELECTRIC CURRENT GENERATORS
Pierre Cibié, Paris, France
Application June 12, 1934, Serial No. ‘730,222
In France June 21, 1933
1 Claim. (Cl. 17l-—222)
This invention relates to a voltage regulating the simultaneous decrease of both attractions.
apparatus for electric current generators.
The above device has the two following chief
An object of the present invention is the pro
disadvantages:
,
vision of a voltage regulating apparatus which
1st.—The secondary winding e2 being located
5 may be used for different types of dynamos and immediately at the terminals of the inductors,
which will be extremely responsive and sensi_ the electric current that passes through it is a
tive.
function of that which ?ows through the induc
The above and other objects of the present tors and consequently depends upon the construc
invention may be realized through the provision tion of said inductors. This has the drawback
10 of a regulating device having a secondary winding of requiring an adjustment of the regulating de 10
which is shunted to the terminals of a non
vice for each type of dynamo.
inductive resistance or upon a part of such resist~
2nd.—The secondary winding .having an im
ance which itself is shunted to the terminals of portant self induction does not easily take up
the dynamo inductor.
the supplementary current from the inductors
The invention will appear more clearly from and said supplementary current generates at
15
the following detailed description when taken
in connection with the accompanying ‘drawing
showing a preferred embodiment of the inven
tive idea.
In the drawing:
20
Figure 1 is a diagram showing a device known
in prior art.
-
Figure 2 is a diagram illustrating the strength
of the current.
25
Figure 3 illustrates diagrammatically a device
constructed in accordance with the principles of
the present invention.
Voltage regulating apparatus for electric cur
rent generators of the type diagrammatically
3 O illustrated in Fig. 1 of the appended drawing are
the terminals of the contact piece 0 a consider
able electromotive power which ensures the pas
sage of the spark when the contact pieces are at
a considerable distance apart, thus causing very
important displacements of the blade and in some 20
cases the persistence of the spark.
Said displacements of the blade reduce the
frequency of its vibrations.
It will be seen from the diagram in Fig. 2
that when the frequency decreases the maximum
strength of the current which has been reached
during the operation of the regulator to produce
the same mean strength in the inductors in
creases.
This increase of the maximum strength pro
duces the increase of the power brought out in the
well known. The circuit of the inductors i of the
generator is normally closed by the carbon con
spark at the disruptive moment and consequently
tact c.
results in a more rapid and pro?tless destruction
When the voltage at the terminals is higher
than the voltage for which the regulating ap
paratus has been adjusted the blade :2 is at
tracted. Owing to the self induction of the induc
tors the passage of the current is not instantane
ously interrupted, but is kept up by a spark be
40 tween the two contact parts c of the regulating
device.
of the contact pieces.
_
It will therefore be more advantageous to in
crease as much as possible the vibrating speed
of the blade.
Fig. 3 of the annexed drawing illustrates dia
grammatically the present improvement and re—
ferring to said ?gure it will be seen that the non 40
inductive resistance R is branched at the ter
The winding e2 which has a low self induction ~ minals of the inductors i between two points of
relatively to its resistance and is branched at the which the secondary winding e2 of the regulating
inductor terminals takes up a portion of this sup
plementary current, but owing to its own self device is branched. The other elements are the 46
same as before.
induction it does not absorb it as completely as
At the moment when the blade p is attracted
a real resistance would do.
Owing to the decrease of the current in said the supplementary current produced by the in
winding or even to its total reduction resulting ductors is almost completely taken up by the
noninductive resistance R. The electromotive
50 from the opening of the contact pieces, the at
power produced at the terminals of the contacts
traction caused by said winding decreases.
is low and the spark is very quickly put out. The
The voltage of the dynamo decreases simul
taneously as well as the attraction caused by the current being annihilated in the circuit of the
primary winding 61 and the blade rises again
5 m rapidly under the action of the spring r owing to
contacts, the voltage of the dynamo decreases
immediately, the current in the secondary wind 66
2
9,088,289
ing ‘e’ also decreases and the blade immediately
armature and the inductor of a generator, said
rises.
This mode of coupling results therefore in re
inductor having one end connected with one end
of said armature; a contact comprising a sta
duclng the amplitude of the mrvement oi the
blade and in increasing the frequency of its vi
brations.
tionary member and a movable member adapted
to vibrate against said stationary member, said
stationary member being directly connected with
This causes on the one part a reduction of the
the opposite end of said inductor, said movable
length oi’ the spark and on the other part, as seen
in the diagram in Fig. 2, a reduction of the power
10 brought out in said spark, so that the oxidation
oi’ the contacts and all the resulting incon
veniences are almost completely avoided. This
member being connected with the opposite end of
allows of replacing ‘he carbon contacts by metal
contacts.
‘
The secondary win ding e2 being moreover
closed by a resistance, the current that passes
through it is independent 0! the characteristic
leatures of the dynamo in use so that the same
regulating device is appropriate for all types of
20
dynamos.
‘
What I claim and desire to secure by Letters
Patent oi the United States is:
A voltage regulating device for electrical gen
erators comprising in combination with the
said armature, a non-inductive resistance con
nected to the ?rst-mentioned end oi’ said inductor
and connected to said stationary member, where
by said non-inductive resistance is connected in
parallel with‘said inductor and in series with said
stationary member,‘ and an electro-magnet
adapted to attract said movable contact member,
whereby the current in the inductor is interrupted
when said contact members are ‘separated from
each other, said electro-magnet comprising a
primary winding connected in parallel with said
armature and a secondary winding connected
in parallel with at least a portion of said non
inductive resistance.
PIERRE cnsns.
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