close

Вход

Забыли?

вход по аккаунту

?

код для вставки
Sept. 24,- 1946;
_
E, c, LLOYD
I 2,408,080
POWER TRANSMISSION DEVICE
Filed Feb. 26, 1942
-
2 Sheets-Sheet 1
INVENTOR
ATI'ORN
Sept. 24, 1946. '
-
'
E. c. LLOYD
2,408,080
POWER TRANSMISSION DEVICE
Filed Feb. 26, 1942
306
2 Sheets-Sheet 2
w
/7
35”
502
m
INVENTOR
_
lEc'lward DL'lgyd.
504
.
BY
ATTORNEY
_
Patented Sept. 24, 1946
2,408,080
UNITED STATES PATENT OFFICE
2,403,080
POWER TRANSMISSION DEVICE
Edward 0. Lloyd, Takoma Park, Md.
Application February 26, 1942, Serial No. 432,453
26 Claims.
(Cl. 172—284)
(Granted under the act of March 3, 1883, as
amended April 80, 1928; 370 O. G. 757)
1
invention relates to systems for transmit
mechanical power from a driving member
to a driven member through the use of a homo
polar dynamo electric machine connected inter
mediate the driving and driven members.
2
one of the motor members is made stationary
and the other is connected to the driven member.
These and other objects of my invention will
become apparent from the following detailed de
scription and from the accompanying. drawings.
By means of my invention, homopolar ma
Referring now to the drawings:
/
chines of the simplest construction can be uti
Fig. 1 is a longitudinal half section view of on
lized. thus providing a power transmission which
embodiment of the invention; and
is economical to manufacture and simple in oper~
Figs. la, 2, 3, 3a, 4 and 5 are views similar to
ation.
10 Fig. 1, illustrating modi?cations of the structure
One object is to provide an electro-mecham'cal
shown in Fig. 1.
system of transmitting power from a driving
Before describing the structure and operation
member to a driven member at a high ei?ciency.
of the device shown in Fig. 1, it would be well to
Another object is to- provide a power trans~
point out that my improved system of power
mission device of the type described in which
transmission should not be confused with con
power from a driving member operating at sub
ventional systems for transmitting power from
stantially constant speed and torque may be de
a driving member to a driven member in which
livered to a driven member operating at variable
it is customary to provide a generator connected
speed and torque.
to the driving member for converting all the me
Another object of the invention is to provide a 20 chanical power into electrical power and thence
combined generator-motor device of the homo
reconverting such electrical power to mechanical
polar type in which part of the power is trans
power by feeding it to a motor connected to the
mitted from a driving member to a driven mem
driven member. In the apparatus to be described,
ber through a magnetic coupling effected between
the only mechanical power converted to electrical
the armature and held members of the generator
power in the generator is that produced by the
side of the device; the remainder of such power
difference in speeds of the armature and ?eld
is transmitted by motor action in the motor side
members of the generator which constitutes the
of the device and the current for the motor is
electro-magnetic or slip coupling portion of the
supplied from the generator side.
transmission device.
Another object is to provide a dynamo-electric 30
One of the advantages to be derived from the
machine for coupling a driving member to a
use of my invention is that its ef?ciency is much
driven member, the machine being a combined
higher than the aforementioned conventional
generator-motor device of the homopolar type
system.
consisting of three members which are rotatable
For example, in the conventional system, if an
ef?ciency of 90% (which value is a fair ?gure for
electric machines) is assumed for conversion of
the entire mechanical power to electrical power,
and an efficiency of 90% is similarly assumed for
the conversion of such electrical power back into
mechanical power, the over-all e?iciency of the
system will be equal to the product of the com
relative to each other on a common axis, one of
such members being made stationary. One of the
rotatable members is connected to the driven
member and is common to both the motor and
generator sides of the machine; i. e., one portion
of the member acts as an armature or ?eld for
the generator side and the other portion acts as
armature or ?eld for the motor side. The
other rotatable member is connected to the driv
ing member and acts as the ?eld or armature of
the generator side.
ponent efficiencies, or 90% ><90%=81%,
In my system, however, assuming the ratio be
tween driving and driven members to be substan
tially l to 1, in which case all the power would
be transmitted through the electromagnetic cou
pling, the ef?ciency of the latter would be the
transmission device of the homopolar type in
efliciency of the coupling, and a fair value for
which the electro-magnetic coupling is provided
such efficiency would be at least 90%.
by action between the armature and ?eld mem 50
Thus, my system, for substantially a 1 to 1 ratio
bers of the generator portion of the device, both
of transmission, would be much higher than the
of which are rotatable, and one of which is con
conventional system. The advantages in in
nected to the driving member; the motor portion
creased efficiency of my system of transmission
consists of a ?eld member and an armature mem
will, however, decrease somewhat as the percent
ber fed by current from the generator portion, 55 age of mechanical power converted to electrical
A more speci?c object of the invention is to
provide for a ‘combined generator-motor power
2,408,080
4
3
power increases, such percentage being propor
tional to the ratio of the di?erence in speed be
tween the driving and driven members to the
speed of the driving member. Thus I have found
that for a reduction in speed of the driven mem
ber to one-half that of the driving member, the
power transmitted from mechanical to electrical
power and back to mechanical (assuming the
power of the driving and driven members to be
substantially equal except for losses) is approxi
mately .5 of the total. Assuming ef?ciencies of
the electro-magnetic transmission at 90% and
that of the efficiency of the electrical conversion
(mechanical to electrical and back to mechanical)
at 81%, the over-all efficiency of my system would
be equal to:
.5 (90%) +.5 (81%) =85.5%
Shaft 2 is journaled for rotation in a central
opening IE3 in. a bell member H which is made
stationary. The bell member ii is similar to'
bell member 3.ccntaining a radial portion [2
and an axial portion It. A circumferential slot
M is provided in the axial portion for receiving
a circumferential ?eld winding [5.
A source of current supply for ?eld windings
9 and I5 is furnished from a potentiometer l5
connected to a power source ll. Current is led
from the potentiometer it through conductor l8
to brush [9 which rides on a slip ring 20. A
conductor 2! connects slip ring 2!} to one side
of the ?eld winding 9. The other side is “ground—
ed” to end hell 3, permitting current return to
source l1 via bell member 3, shaft 2, bell mem
ber H and conductor 22. One side of ?eld wind
ing l5 may be similarly connected to the poten
tiometer it by means of conductor 23‘. The other
which is still high when compared to a system in
which all of the power is converted from mechan 20 side is “grounded” to bell member II. It will be
seen that the amount of current supplied to each
ical form to electrical and back to mechanical
of the windings 9 and i5 may be varied by ad
form.
justing the position of the connecting points of
In addition to the better efficiencies to be de
conductors l8 and 23 to potentiometer IS.
rived from a device constructed in accordance
The cylindrical member 1 in the present em
with my invention, there is a further advantage 25
bodiment comprises a cylinder of iron or steel
in that the physical size of a transmission device
or other material, preferably magnetic, and con
embodying my invention when utilized for trans
tains a bore centrally therein so that it may be
mitting constant power from a driving shaft op
supported on the shaft 2. A disc 24 of non-mag
erating at substantially constant speed to a
netic material may be utilized intermediate the
driven shaft (having the same power) operating
ends of cylinder 1 to isolate the ?eld flux pro~
at reduced speeds, is much smaller than a con
duced by winding 9 from that produced by wind
ventional device utilizing total power conversion
ing l5. Likewise, annular flux barriers 25 and
from mechanical form to electrical form and
26 (see Fig. 1a) may be utilized respectively be
thence back to mechanical form, such as a Ward
35 tween the radial portion 4 and axial portion 5
Leonard system.
of bell member 3, and between the radial portion
For example, it is well known that for a given
i2 and axial portion E3 of bell member H to
power output, the physical size of the armature
con?ne the ?eld ?ux produced respectively by
of a dynamo electric machine, and hence the
windings 9 and 15 to the axial portions 5 and
size of the machine, varies with the speed of the
40 [3 of said bell members. A different way to pro
machine in accordance with the equation
duce the same result (see Fig. 1) would be to
W =7cLD2N
construct the radial portions of each of the bell
members of non-magnetic material and the axial
where
W :watts
L=length of armature
D=diameter of armature
N=speed in revolutions per minute
Ic=a constant.
Thus in a conventional system utilizing sepa
rate and distinct generator and motor, if the
motor is to be run at half the speed of the gen
erator but at the same power, the motor'must
be twice the size of the generator. In my de
vice, however, I have found out that for the
same reduction in speed, ratio 1 to 2, the motor
needs to be only the same physical size as the
generator, as only about 50% of the power is
converted from mechanical to electrical energy
and back to mechanical energy.
Referring now to Figs. 1 and 1a, the driving
member, in the present embodiment a shaft I,
is journaled for rotation by any well known
means, which are not shown.
The driven mem
portions thereof of magnetic material.
Brushes 2'! and 23, preferably circumferential,
are arranged to convey current between the cylin
der 1 and bell members 3 and II, and brushes
29 and 30 convey current between bell members
3 and H and the shaft 2. This current and its
direction of ?ow will be discussed hereinafter.
The shaft 2 is preferably insulated from the
cylinder 1 by means of an insulating sleeve 3|.
Operation
The power transmitting device in Fig. 1 oper
ates in the following manner:
In general, it may be stated that the portion
of the device which is left of the division line
a—a acts as a homopolar generator, while that
to the right of line a-a acts as a homopolar
motor. Thus the “generator” comprises a “?eld”
member 5 and an “armature” member consisting
of the left half of cylinder 1, while the “motor”
comprises a “?eld” member 13 and an “armature”
ber, in the present embodiment, is also a shaft 65 member consisting of the right half of cylinder
1. Since in Fig. 1 the radial portions 4 and I2
2. A bell member 3 is ?xed to the end of the
of bell members 3 and H are non-magnetic, and
shaft l for rotation therewith and is provided
are thus isolated from the magnetic, axial por
with a radial portion 4 and an axial portion
tions thereof, or separated from the axial portions
5. An opening 6 formed centrally in the radial
portion 4 serves to journal a cylindrical member 70 by flux barriers 25 and 26 (Fig. 1a), ?ux pro
duced by the ?eld windings B and I5 when ener
1 which, as will be hereinafter described, is an
gized will link only the axial portions 5 and IS
armature common to both the motor and gener
with cylinder member ‘i, as shown by the broken
ator sides of my device. A circumferential slot
“dash” lines.
8 is formed in the axial portion 5 for receiving
75
If it is desired to operate the transmission
a circumferential ?eld winding 9.
2,408,080
5
device at substantially at 1 to 1 ratio in speed of
the driving to driven shafts, and shaft I is turning
at full speed, shaft 2 may be coupled to shaft I
through the transmission by gradually energiz
ing the winding 9 by means of the potentiometer
it. As both bell member 3 and cylinder 1 are
rotatable, the latter will begin to pick up» speed
until it is running at a speed slightly under that
of the shaft
The cylinder ‘7 is then “electro
magnetically” coupled to the bell member 3 and
the difference in speeds of the two, often termed
the “slip” of the coupling, represents the major
portion of the energy loss in the coupling. Ro
tation of the bell member 3 relative to cylinder ‘I
generates an E. M. F. in cylinder ‘i, causing cur
rent to flow radially outwardly from cylinder ‘I,
across brush 2?’, through the axial and radial
portions of bell member 3, across brush 2%,
through shaft 2, across brush 3%], through the
radial and axial portions of bell member i l, across
brush 23 into the motor half of cylinder 1 and
across disc 24 to the generator half of cylinder ‘I.
The approximate course of this current is illus
trated by broken “dash and dot” lines.
If it is desired to operate my transmission de
6
with current in a manner similar to that shown
and described with respect to the structure of
Fig. l. Annular brushes 213 and EM are pro
vided for conveying current between the arma
ture and ?eld members of the motor and gener
ator, and an external connector 255 and brush
218 connecting ?eld member 293 with ?eld mem
ber 204 completes the circuit for current flow be
tween the generator and motor sides of the de
vice. If desired, a flux barrier ‘ill of non-mag
netic material may divide the generator half of
the armature member 205 from the motor half
thereof.
The device in Fig. 2 operates in a manner simi
lar to that in Fig. l and the positions of the ?eld
and armature members of the generator and/or
motor members may be similarly reversed; that
is, winding 2| I and/or winding 2 i 2 may be placed
in suitable recesses provided in the cylindrical
member 2535. Its utter simplicity may make its
use desirable in some installations when the total
power to be transmitted from the driving to the
driven shaft is of a low order. However, with a
higher order of power, it would appear that axial
thrust between the end faces of members 203 and
2M and the end faces of member 2135 may be of
such magnitude as to make this particular em
vice to transmit a given amount ‘of power from
one speed of the shaft i to shaft 2 operating at
a lower speed, it is obvious that if the power in
bodiment impractical.
the driven member is to be made substantially
The modi?cation illustrated in Fig, 3 is par
equal to the power in the driving member, the 30 ticularly adapted for installations where space
torque of the driven member must be greater
axially is at a premium. A driven shaft Silt h
than the torque of the driving member, since
connected to the end thereof a bell member 302
power varies as the‘ product of torque and speed.
having a radial portion 393 and an axial portion
rl‘his added torque is furnished by exicting ?eld
364. Bell member 352 rotates with the driven
winding t5 which produces “motor” action in the
motor half of cylinder ‘I.
shaft 38! and constitutes an “armature” com“
The ratio of speeds of driving to driven mem
bers may be varied by regulating the relative
field strengths of the windings 9 and !5.
Reverse rotation of the shaft 2 may be obtained
by reversing .the direction of current flow in
winding 55 and reducing current ?ow through
secondary stationary bell member 3535 having a
radial portion 3%‘? and an axial portion 338 which
forms the “field” member for the motor. Shaft
38% supports a cylindrical member 3% which
winding 9.
While, in the present embodiment, the “?eld”
in and constitutes the generator “?eld” member.
The stationary bell member 3% is also pro
mon to both the motor and generator sides of
the device. A driving shaft 335 is journaled in a
carries an annular winding 3 i F3 in a recess there
member of the generator half is the axial portion 45 vided with a recess within which an annular
5 of bell member 3 and the “armature” is the
winding 3!! is located and constitutes the motor
left half of cylinder 1, it will be obvious that a
“?eld” member.
similar result would be obtained by placing wind
Brushes Sit’, MS, and 3%, which may be an
ing 9 on cylinder ‘I, in which case the latter would
nular, are provided-for conveying current be
become the “?eld” member of the generator while 50 tween the motor and generator sides of the de
the axial portion of bell member 3 would then
vice. Field flux is illustrated by broken "dash”
become the “armature” member of the generator.
lines and direction of current flow is indicated
Similar reversal of parts could likewise be‘made
by broken “dash and dot” lines.
in the motor side of my device without departing
In order to isolate the flux produced by the
from the spirit and scope of my invention.
generator ?eld winding till from that pro
In the modi?cation shown in Fig. 2, there is
duced by the motor ?eld winding 3H, an an
illustrated an embodiment of my invention which
nulus of non-magnetic material 355 may be in
is extremely simple in construction. A drive
serted in the axial portion 355 of hell member
shaft 'Jiil has connected to the end thereof an
382. If radial portions 393 and 381 are of non
annulus 263 of magnetic material constituting a 60 magnetic material, the motor and generator ?eld
generator “?eld” member. A driven shaft 202
fluxes will be con?ned to the axial portions 3%
is journaled in a stationary annulus 2% of mag
and 3%. However, if made of magnetic mate
netic material constituting the motor “field”
rial, annuli SP3 and 3!‘! of non-magnetic mate
member and supports a cylindrical member 205.
rial (see Fig. 3a) may be inserted at the juncture
Cylinder 265 is insulated from shaft 202 by an
between the radial portion 393 and axial portion
insulating sleeve 296. Sleeves 20‘! and 208 of
33d of bell member 3532, and between the radial
non-magnetic material are provided between the
portion Bill and axial portion 3% of bell member
generator and motor ?eld members and shaft 202.
365.
' The cylindrical member 2% constitutes an
The ?eld windings are and 3!! may bev ener
“armature” member common to both motor and 70
generator.
gized in a manner similar to the arrangement
Recesses 2G9 and 2!!) are provided respectively
in the inner faces of the generator and motor
?eld members 203 and 204 for receiving windings
2H and M2. These windings may be supplied
shown in Fig. 1, one side of each winding being
“grounded” to the ?eld structure. The lead to
winding 3!!) may be connected by means of slip
' ring 3l8 and brush 3l'9, a bore being provided in
2,468,080
8
r 7
the shaft 305 and cylinder 309. Insulating sleeve
320 is provided.
The modi?cation illustrated in Fig. 4 is some
what similar to that in Fig. 1, the principal dif
ference being in the direction of the ?eld flux
paths. In Fig. l, the path for ?eld ?ux is radial,
whereas in Fig. 4, the path is both radial and
' ‘Brushes 5l5, 5l6 and 5H convey current be“
tween the motor and generator sides of the device.
The path for the generator ?eld flux is illus
trated by broken “dash” lines and the path for
current ?ow by broken “dash and dot” lines.
Field windings 502 and 504 may be connected to
a source of power in a manner similar to that in
Fig. 1, using the ?eld members 50! and 503 as
part of the conductive path. However, no slip
portion 002 and a radial portion 403 is suitably 10 rings are, of course, necessary here, as both wind
ings are stationary.
connected to the end of a driving shaft 404 and
In operation, as the disc 506 is rotated by the
constitutes the generator “?eld” member. A sec
ond stationary bell member 405 having an axial
drive shaft 505, and E. M. F. is generated therein,
causing current to flow radially therefrom which
portion 406 and a radial portion 401 constitutes
15 passes into disc 509 (carried by driven shaft
the motor “?eld” member.
50'!) and causes the latter to rotate. These two
A driven shaft 408 is journaled in bell members
discs thus constitute a slipping magnetic clutch
MI and 405, and carries a cylindrical member 409
arrangement. The current enters shaft 50'! from
which constitutes an. “armature” member com
men to both the generator and motor sides of the
disc 509 and passes over to the motor side and
device.
20 radially through disc 508. The current returns
to the generator side through ?eld members 503
A recess
provided in bell member 40! to re
and 50 i.
ceive an annular winding M0 and
similar re
cess is provided in hell member 005 to receive an
In conclusion, it ‘will be evident that various
changes and modi?cations in addition to those
annular winding 4! I.
A flux barrier 1H2 of non-magnetic material in_ 25 which have already been suggested, may be made
in my invention without departing from the spirit
serted medially in the armature member 409 may
be utilized to isolate the ?ux produced by winding
and scope thereof, and accordingly, I desire it to
45.0 from that produced by Winding v1H I.
be understood that only such limitations as are
necessitated by the prior art should be made upon
Brushes M2, M4 and M5 convey current be
tween the motor and generator sides of the trans 30 the claims appended thereto.
axial.
In Fig. ii, a bell member 401 having an axial
mission device.
Sleeves M0 and 4!"! of non_
magnetic material con?ne generator and motor
field flux to their proper paths. A sleeve M0 of
insulating material may be utilized to con?ne the
flow of current between motor and generator to
its proper path.
The invention described herein may be manu
factured and used by or for the Government of
the United States of America for governmental
purposes without the payment of any royalties
thereon or therefor.
Having thus fully described my invention, what
I claim is:
As in the other modi?cations, current may ‘be
supplied to coil M0 by means of a slip ring 4!!)
l. A combined generator-motor device of the
and associated brush 400, and one side of each
unipolar type for transmitting power from a driv
of the coils M0 and 4H may be “grounded” to 40 ing member to a driven member comprising a
their respective ?eld structures.
cylindrical member, one portion of-which consti
As will be seen from the drawings, both radial
tutes a generator member and the other portion
and axial ?ux paths are provided, as indicated
constituting a motor member, said cylindrical
by broken "das .” lines, and current flow between
member being connected to said driven member,
motor and generator sides of the device is indi
an annular generator member, said generator
cated by the broken “dash and dot” lines.
member being connected to said driving mem
her for rotation thereby and being disposed so
The modi?cation illustrated in Fig. 5 differs
principally from the other modi?cations by the
fact that both the motor and generator ?eld
that the axial portion thereof houses substantially
the generator portion of said cylindrical member,
windings are made stationary. In this modi?ca»
a stationary annular motor member, said motor
member being disposed so that the axial portion
tion, member 501 is provided with an internal re
cess for housing a generator ?eld winding 502.
thereof houses substantially the motor portion
A similar member 503 is provided with a recess
of said cylindrical member, a field winding dis
posed in one of said generator members. a ?eld
for supporting a motor ?eld winding 504.
A drive shaft 505 is journaled within the mem 55 winding disposed in one of said motor members,
and means for conveying current between the
ber 59! and carries a disc 506 at the end thereof
generator and motor sides of said device.
which constitutes the armature member for the
2. A combined generator-motor device of the
generator. A. driven shaft 50'! is journaled with
unipolar type for transmitting power from a driv
in members 50! and 503. One disc 508 consti
tuting. the armature member for the motor side 60 ing member‘ to a driven member comprising a
generator member connected to said driving
of the device, is fastened by suitable means, such
as keying, to the driven shaft 501 and operates
member, a stationary motor member, said mem»
bers having radially and axially extending face
'between the pole pieces of member 503 formed
by the adjacent faces forming the cylindrical re
portions, a cylindrical member one portion of
cess therein. Another disc member 509 is secured 65 which constitutes a second generator member and
the other portion constituting a second motor
to the end of shaft 501 and operates within the
similar cylindrical recessed portion in member
member, said cylindrical member being connected
50! and adjacent to disc member 506.
to said driven member and being disposed inter
mediate said ?rst mentioned generator and motor
Insulating sleeves 5P0, SH, 552 and 513 may
be utilized intermediate the shafts 505 and 501, 70 members so that the axial face of said cylindri
and the motor and generator stationary ?eld
cal member forms radially extending air gaps
members 501 and 500, and a non-magnetic sep
respectively with the axial face portions of said
arator 554 may be utilized to isolate the flux pro
?rst mentioned generator and motor members
duced by winding 502 from that produced by
for the passage of generator and motor ?eld ?ux
winding 504.
75 respectively to and from said cylindrical member,
2,408,080
10
a generator ?eld ?ux winding disposed in one of ‘
spectively to and from said cylindrical member, a
generator ?eld ?ux winding disposed in the axial
said generator members, a motor ?eld ?ux wind
ly extending portion of said generator ?eld mem
ing disposed in one of said motor members,,and
means for conveying current between the gen
ber, a motor ?eld ?ux winding disposed in the
axially extending portion of said motor ?eld
erator and motor sides of said device.
3. A combined generator-motor device of the
member, ?ux barrier means disposed at substan
unipolar type for transmitting power from a driv
tially the juncture between said radially and ax
ing member to a driven member comprising a
ially extending portions of said generator and
generator member connected to said driving
motor ?eld members, ?ux barrier means disposed
member, a stationary motor member, said mem 10 between the generator and motor parts of said
bers having radially and axially extending por~
cylindrical armature member, and means for
conveying current between the generator and
tions, a cylindrical» member, one part of which
constitutes a second generator member and the
motor sides of said device.
other part constitutes a second motor member,
6. A combined generator-motor device of the
said cylindrical member being connected to said 15 unipolar type for transmitting power from a driv
driven member and being disposed intermediate
ing member to a driven member comprising a
said ?rst mentioned generator and motor mem
generator ?eld member connected to said driving
bers so that the axial face of said cylindrical
member, a stationary motor ?eld member, each
member forms radially extending air gaps re
of said ?eld members having a non-magnetizable
spectively with the axial portions of said ?rst 20 radially extending portion and a magnetizable
mentioned generator and motor members for the
axially extending portion, a cylindrical member,
passage of generator and motor ?eld ?ux respec
one part of which constitutes a generator arma
tively to and from said cylindrical member, a
generator ?eld ?ux winding disposed in one of
said generator members, a motor ?eld ?ux wind
ing disposed in one of said motor members,
means for conveying current between the gen
erator and motor sides of said device, flux barrier
means disposed at substantially the juncture be
ture member and the other part constituting a
motor armature member, said cylindrical mem
tween said radially and axially extending por- -
tions of said ?rst mentioned generator and motor
ber being connected to said driven member and ‘
being disposed intermediate said generator and
motor ?eld members so that the axial face of said
cylindrical member forms radially extending air
gaps respectively with the axially extending por
tions of said generator and motor ?eld members
for the passage of generator and motor ?eld ?ux
respectively to and from said cylindrical member,
a generator ?eld ?ux winding disposed in the
cylindrical member.
axially extending portion of said generator ?eld
ll. A combined generator-motor device of the 35 member, a motor ?eld flux winding disposed in
the axially extending portion of said motor ?eld
unipolar type for transmitting power from a driv
ing member to a driven member comprising a
member, ?ux barrier means disposed between the
generator and motor parts of said cylindrical
generator ?eld member connected to said driving
armature member, and means for conveying cur
member, a stationary motor ?eld member, said
rent between the generator and motor sides of
?eld members having radially and axially extend
said device.
ing portions, a cylindrical member, one part of‘
which constitutes a generator armature member
'7. A combined generator-motor device of the
unipolar type for transmitting power from a driv
and the other part constituting a motor arma
ing member to a driven member comprising a
ture member, said cylindrical member being con
nected to said driven member and being disposed
cylindrical generator member connected to said
intermediate said generator and motor ?eld mem
driving member for rotation thereby, a second
members, and flux barrier means disposed be
tween the generator and motor parts of said
bers so that the axial face of said cylindrical
member forms radially extending air gaps respec~
tively with the axially extending portions of said
generator and motor ?eld members for the pas
sage of generator and motor ?eld ?ux respective
ly to and from said cylindrical member, a gen
erator ?eld ?ux winding disposed in the axially
extending portion of said generator ?eld member,
a motor ?eld ?ux winding disposed in the ax
ially extending portion of said motor ?eld mem
ber, and means for conveying current between
the generator and motor sides of said device.
5. A combined generator-motor device of the
unipolar type for transmitting power from a driv
ing member to a driven member comprising a
generator ?eld member connected to said driving
member, a stationary motor ?eld member, said
?eld members having radially and axially ex
tending portions, a cylindrical member, one
part of which constitutes a generator armature
member and the other part constituting a motor
armature member, said cylindrical member being
connected to said driven member and being dis
posed intermediate said generator and motor
?eld members so that the axial face of said cylin
drical member forms radially extending air gaps
respectively with the axially extending portions
cylindrical stationary motor member, a third cy
lindrical member, one part of which constitutes
a generator member and the other part of which
constitutes a motor member, said third cylindrical
member being connected to said driven member
and being disposed intermediate said ?rst men
tioned motor and generator members so that the
end faces of said third cylindrical member and
the inner end faces of said ?rst mentioned motor
and generator members form axially extending
air gaps for the passage of ?eld flux axially to
and from said third cylindrical member, a ?eld
?ux winding disposed in one of said generator
members, a ?eld flux winding disposed in one
of said motor members, and means for conveying
current between the generator and motor sides
of said device.
8. A combined generator-motor device of the
unipolar type for transmitting power from a driv
ing member to a driven member comprising a
cylindrical generator member connected to said
driving member for rotation thereby, a second
cylindrical stationary motor member, a third cy
70 lindrical member, one part of which constitutes
a generator member and the other part consti
tuting a motor member, said third cylindrical
member being connected to said driven member
of said generator and motor ?eld members for
and being disposed intermediate said ?rst men
the passage of generator and motor ?eld ?ux re 75 tioned, generator and motor members so that the
11
12
end faces of said third cylindrical member and
termediate the end faces of said armature mesa
ber to isolate the ?ux produced by the generator
?eldwinding from that produced by the motor’
?eld winding,
12. A combined generator-motor device of the
the inner end faces of said ?rst mentioned gener
ator and motor members form an axially extend»
ing air gap for the passage of ?eld flux axially
to and from said third cylindrical member, an
annular ?eld ?ux winding disposed in one of said
generator members, an annular ?eld ?ux winding
disposed in one of said motor members, means
unipolar type for transmitting power from a
driving member to a driven member comprising
a cylindrical generator ?eld member connected
for journaling said third cylindrical member in
to said driving member for rotation thereby, a
said ?rst mentioned cylindrical generator and 10 stationary cylindrical motor ?eld member, a cy
motor members, and means for conveying cur
lindrical armature member common to both m0
rent between the generator and motor sides of
tor and generator and having a diameter not sub
said device.
stantially less than the diameter of said ?eld
9. A combined generator-motor device of the
members throughout its axial length, said arma
unipolar type for transmitting power from a driv
ture being connected to said driven member and
ing member to a driven member comprising a
being disposed intermediate said ?eld members
cylindrical generator ?eld member connected to
so that the end faces of said armature member
said driving member for rotation thereby, a sec
and the inner end faces of said ?eld members
ond cylindrical stationary motor ?eld member, a
form axially extending air gaps for the passage
third cylindrical armature member common to 20 of ?eld ?ux axially between said ?eld members
both motor and generator having a diameter not
and said armature member, a ?eld ?ux winding
substantially less than the diameter of said ?eld
for each of said ?eld members, means for jour
members throughout its axial length, said arma
naling said armature member in said ?eld mem
., ture member being connected to said driven mem
bers, means for conveying current between the
ber and being disposed intermediate said ?eld
generator and motor sides of said device, ?ux
members so that the end faces of said armature
member and the inner end faces of said ?eld
barrier means disposed intermediate the end faces
of said armature member to isolate the ?ux pro
members form axially extending air gaps for the
passage of ?eld ?ux axially between said ?eld
members and said armature member, a ?eld ?ux
winding for each of said ?eld members, and
means for conveying current between the gener
ator and motor sides of said device.
10. A combined generator-motor device of the
' unipolar type for transmitting power from a driv
ing member to a driven member comprising a
cylindrical generator ?eld member connected to
said driving member for rotation thereby, a sta
tionary cylindrical motor ?eld member, a cylin
duced by the generator ?eld winding from that
produced by the motor ?eld winding, and flux
barrier bushing means associated with said jour
nal means.
13. A combined generator-motor device of the
unipolar type for transmitting power from a driv
ing member to a driven member comprising an
35 annular generator ?eld member connected to said
driving member for rotation thereby, an annular
stationary ?eld member, a cylindrical armature
member common to both motor and generator
and having a diameter not substantially less than
drical armature member common to both motor 40 the diameter of said ?eld members throughout
and generator having a diameter not substan
tially less than the diameter of said ?eld members
throughout its axial length, said armature mem~
ber being connected to said driven member and
its axial length, said armature being connected to
said driven member and being disposed interme
diate said ?eld members so that the end faces of
said armature member and the inner end faces of
45 said ?eld members form axially extending air
so that the end faces of said armature member
gaps for the passage of ?eld ?ux axially between
and the inner end faces of said ?eld members
said ?eld members and said armature member,
form axially extending air gaps for the passage
each of said annular ?eld member-s having a re»
of ?eld ?ux axially between said ?elds and said
cess in its inner face located intermediate the
armature member, means providing recesses re 50 inner and outer peripheries thereof, a ?eld flux
spectively in the inner end faces of said ?eld
winding disposed in each said recess, means for
members, a ?eld ?ux winding disposed in each
journaling said armature member in said ?eld
said recess, and means for conveying the cur
members, means for conveying current between
rent between the generator and motor sides of
the generator and motor sides of said device, flux
said device.
55 barrier means disposed 'intermediate the end
11. A combined generator-motor device of the
faces of said armature member to isolate the flux
unipolar type for transmitting power from a driv
produced by the generator ?eld winding from
ing member to a driven member comprising a cy
that produced by the motor ?eld winding, and
lindrical generator ?eld member connected to
?ux barrier bushing means associated with said,
said driving member for rotation thereby, a sta
journal means.
tionary cylindrical motor ?eld member, a cylin
14. A combined generator-motor device of the
drical armature member common to both motor
unipolar type for transmitting power from a driv
and generator having a diameter not substantial
ing member to a driven member comprising a
ly less than the diameter of said ?eld members
stationary end bell having radial and axial por
throughout its axial length, said armature being 65 tions, said axial portion constituting a motor
connected to said driven member and being dis
member, a second end bell having radial and axial
posed intermediate said ?eld members so that
portions, said axial portion constituting both a
the end faces of said armature member and the
motor member and a generator member and being
inner end faces of said ?eld members form ax
disposed to rotate within the axial portion of said
ially extending air gaps for the passage of ?eld
stationary end bell, the inner surface of the axial
?ux axially between said ?eld members and said
portion of said stationary end bell and the outer
armature member, a ?eld ?ux winding for each
surface of the axial portion of said second end bell
of said ?eld members, means for conveying cur
de?ning a radially extending ‘airgap, means for
rent between the generator and motor sides of
connecting said second end bell to said driven
said device, and ?ux barrier means disposed in 75 member, a cylindrical generator member con
being disposed intermediate the ?eld members
2,408,080
13
14
nected to said driving member and being disposed
to rotate within the axial portion of said second
to isolate the flux produced by the motor ?eld
winding from that produced by the generator ?eld
end bell, the inner surface of the axial portion of
‘said second end bell and the axial surface of said
Winding, and flux barrier means disposed at sub
stantially the juncture between the radial and
axial portions of said end bells to con?ne the ?ux
cylindrical generator member de?ning a radially
extending airgap, a generator ?eld winding dis
to said axial portions.
18. A combined generator-motor device of the
posed in one of said generator members, a motor
?eld winding disposed in one of said motor mem
unipolar type for transmitting power from a driv
bers, and means for conveying current between
ing member to a driven member comprising a sta~
10 tionary end bell having radial and axial portions,
the generator and motor sides of said device.
15. A combined generator-motor device of the
said axial portion constituting a motor ?eld mem
unipolar type for transmitting power from a driv
ber, a second end bell having radial and axial
ing member to a driven member comprising a
portions, said axial portion constituting an arma
stationary end bell having radial and axial por
ture member common to both motor and gener
tions, said axial portion constituting a motor ?eld
member, a second end bell having radial and axial
portions, said axial portion constituting an arma
ator and being disposed to rotate within the axial
portion of said stationary end bell, means for
connecting said second end bell to said driven
ture member common to both motor and gener
member, a generator ?eld member connected. to
ator and being disposed to rotate within the axial
said driving member and being disposed to rotate
portion of said stationary end bell, the inner sur 20 within the axial portion of said second end bell,
face of the axial portion of said stationary end
a ?eld winding for each of said ?eld members,
bell and the outer surface of the axial portion
means for journaling said generator ?eld mem
of said second end bell de?ning a radially extend
ber in said end bells, and means for conveying
ing airgap, means for connecting said second end
current between the generator and motor sides
bell to said driven member, a generator ?eld
of said device.
member connected to said driving member and
19. A combined generator-motor device of the
being disposed to rotate within the axial portion
unipolar type for transmitting power from a driv-.
of said second end bell, the inner surface of th
ing member to a driven member comprising a
axial portion of said second end bell and the axial
stationary end bell having radial and axial por
surface of said generator ?eld member de?ning a 30 tions, said axial portion constituting a motor ?eld
radially extending airgap, a ?eld winding for
member, a second end bell having radial and axial
each of said ?eld members, and means for corn
portions, said axial portion constituting
arma~
veying current between the generator and motor
ture member common to both motor and gener?
sides of said device.
ator and being disposed to rotate within the axial
16. A combined generator-motor device of the 35 portion of said stationary end bell, means for
unipolar type for transmitting power from a driv
connecting said second end bell to said driven
ing member to a driven member comprising a
member, a generator ?eld member connected to
stationary end bell having radial and axial por~
said driving member and being disposed to re»
tions, said axial portion constituting a motor
tate within the axial portion of said second end
?eld member, a second end bell having radial and 40 bell, a ?eld winding for each of said ?eld mem
axial portions, said axial portion constituting an
bers, means for journaling said generator ?eld
armature member common to both motor and
member in said end bells, means for conveying
generator and being disposed to rotate within
current between the generator and motor sides
the axial portion of said stationary end bell,
of said device, ?ux barrier means disposed inter“
means for connecting said second end bell to
mediate the inner and outer peripheries of the
said driven member, a generator ?eld member
axial portion of said second end bell to isolate
connected to said driving member and being dis
the ?ux produced by the motor ?eld Winding from
posed to rotate within the axial portion of said
that produced by the generator ?eld winding, and
second end bell, a ?eld winding for each of said
?ux barrier means disposed at substantially the
?eld members, means for conveying current be 50 juncture between radial and axial portions of said
tween the generator and motor sides of said de
end bells to con?ne the ?eld ?ux to said axial
vice, and flux barrier means disposed intermedi
portions.
ate the inner and outer peripheries of the axial
20. A combined generator-motor device of the
portion of said second end bell to isolate the flux
unipolar type for transmitting power from a driv~
produced by the motor ?eld winding from that 55 ing member to a driven member comprising a
produced by the generator ?eld winding.
stationary end bell motor ?eld member, said ?eld
17. A combined generator-motor device of the
member having a non-magnetizable radial por~
unipolar type for transmitting power from a driv
tion and. a magnetizable axial portion, a motor
ing member to a driven member comprising a
?eld winding in the axial portion thereoi, a sec
stationary end bell having radial and axial por 60 ond end bell member constituting an armature
tions, said axial portion constituting a motor ?eld
member common to both motor and generator,
member, a second end bell having radial and axial
portions, said axial portion constituting an arma
said second end bell having a non-magnetizable
radial portion and a magnetizable axial portion,
said axial portion being disposed to rotate within
erator and being disposed to rotate within the 65 the axial portion of said stationary end bell,
axial portion of said stationary end bell, means
means for connecting said second end bell to said
for connecting said second end bell to said driven
driven member, a generator ?eld member con
member, a generator ?eld member connected to
nected to said driving member and being disposed
said driving member and being disposed to rotate
to rotate within the axial portion of said second
within the axial portion of said second end bell,
end bell, a ?eld winding for said generator ?eld
a ?eld winding for each of said ?eld members,
member, means for journaling said generator
ture member common to both motor and gen
means for conveying current between the gener
ator and motor sides of said device, flux barrier
means disposed intermediate the inner and outer
?eld member in said end bell members, means for
conveying current between the generator and
motor sides of said device, and ?ux barrier means
peripheries of the axial portion of said second bell 75 disposed intermediate the inner and outer pe
2,408,080
15
16
ripheries of the axial portion of said second end
bell to isolate the flux produced by the motor ?eld
winding from that produced by the generator
?eld winding.
face portions of said generator and motor ?eld
21. A combined generator-motor device of the
unipolar type for transmitting power from a driv
ing member to a driven member comprising a
members for the passage of ?eld flux to and. from
said armature member, means for conveying cur
rent between the generator and motor sides of
said device, ?ux barrier means disposed in said
generator and motor ?eld members, and ?ux bar
rier means disposed intermediate the end faces
of said armature member to isolate the ?eld flux
generator member connected to said driving
produced by said generator ?eld winding from
member, a stationary motor member, said gen
erator and motor members having radially and 10 that produced by said motor ?eld winding.
axially extending face portions, a cylindrical
24. A combined generator-motor device of the
unipolar type for transmitting power from a driv
member, a portion of which constitutes a second
generator member and a portion of which con
ing member to a driven member comprising a sta
stitutes a second motor member, said cylindrical
tionary generator ?eld member having a bore ex
member being connected to said driven member 15 tending axially therethrough' and a concentric
and being disposed intermediate said ?rst men
recessed portion extending normal to said bore, a
tioned generator and motor members so that the
driving shaft, said shaft being extended into the
end and axial faces of said cylindrical member
bore in said ?eld member and including a disc
form axially and radially extending air gaps re
member connected thereto for rotation Within said
spectively With the end and axial face portions of
recessed portion, said disc member constituting
said ?rst mentioned generator and motor mem
the armature member for said generator, a sta
bers for the passage of ?eld ?ux to and from said
tionary motor ?eld member having a bore extend
cylindrical member, a generator ?eld ?ux wind
ing axially therethrough and a concentric re~
ing disposed in one of said generator members, a
cessed portion extending normal to said bore, a
motor ?eld flux winding disposed in one of said
driven shaft, said driven shaft being extended
motor members, and means for conveying current
through the bore in said motor ?eld member into
between the generator and motor sides of said
the bore in said generator ?eld member, a second
device.
disc member connected to said driven shaft for
22. A combined generator-motor device of the
rotation within the recessed portion in "said gen
unipolar type for transmitting power from a driv 30 erator ?eld member adjacent said ?rst mentioned
ing member to a driven member comprising a gen
disc member, a third disc member connected to
erator ?eld member connected to said driving
said driven shaft and arranged for rotation ‘within
member for rotation thereby, said generator ?eld
the recessed portion in said motor ?eld member
member including radially and axially extending
to constitute the motor armature member, a ?eld
face portions, a stationary motor ?eld member in 35 winding for each of said ?eld members, and means
cluding radially and axially extending portions,
for conveying current between the generator and
a ?eld flux winding for each of said ?eld members,
motor sides of said device.
a cylindrical armature member common to both
25. The combination in claim 24 including non
motor and generator, said cylindrical member
magnetic ?ux barrier means disposed between
being connected to said driven member and being 40 said generator and motor ?eld members to isolate
disposed intermediate said generator and motor
?eld members so that the end and axial faces of
the flux produced by said generator ?eld winding
from that produced by said motor ?eld winding.
said cylindrical member form axially and radially
26. A combined generator-motor device of the
extending air gaps respectively with the end and
unipolar type for transmitting power from a driv
axial face portions of said generator and motor 45 ing member to a driven member comprising a
?eld members for the passage of field flux to and
cylindrical generator member connected to said
from said cylindrical member, and means for
driving member, a ?rst annular member sur
conveying current between the generator and
rounding said cylindrical member, the axial sur
motor sides of said device.
face portion of said cylindrical generator mem
23. A combined generator-motor device of the 50 ber and the inner surface of said ?rst annular
unipolar type for transmitting power from a driv~
member de?ning a radially extending airgap, said
ing member to a driven member comprising an
?rst annular member constituting both a motor
annular generator ?eld member connected to said
member and a generator member, a second an
driving member for rotation thereby, said gen
nular motor member, said second annular mem
erator ?eld member including radially and axially 55 her being stationary and surrounding said ?rst
extending face portions, a stationary motor ?eld
annular member, the outer surface of said ?rst
member including radially and axially extending
annular member and the inner surface of said
face portions, a ?eld ?ux winding for each of said
second annular motor member de?ning a radially
?eld members, a cylindrical armature member
extending airgap, means for operatively connect
common to both motor and generator, means for
said ?rst annular member to said driven mem
journaling said armature member in said ?eld
ber, a generator ?eld winding disposed in one of
members, said cylindrical member being con
said generator members, a motor ?eld Winding
nected to said driven member and being disposed
disposed in one of said motor members, and means
intermediate said generator and motor ?eld mem
for conveying current between the generator and
bers so that the end and axial faces of said cylin 65 motor sides of the device.
drical member form axially and radially extend
ing air gaps respectively with the end and axial
EDWARD C. LLOYD.
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 664 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа