Patent US6421665B1 successfully refreshed from Google Patents.
Patent EP0495582A2 successfully refreshed from Google Patents.
EP0495582A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
High efficiency, low reactance disk-type machine including a rotor and stator
Assignee: Westinghouse Electric Corp
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Filing: 1992-01-09
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Granted: —
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Expires: 2012-01-09
Abstract
Abstract An improved disk-type machine having a plurality of alternating stator and/or rotor sections is disclosed. The stator of the machine has micro-laminated stator teeth molded from cut steel particles, mounted on a large disk of composite fiber material which is the main structural component of each stator section. The stator teeth are preferably molded in place during disk manufacture. The stator is designed to operate in a machine having an even number of axial air gaps, but has only a single winding for each stator. One layer of the winding is located on each side of the central supporting disk and the ends of the windings are connected through connectors molded into or mounted on the disk. Multiturn coils may be employed by making a plurality of these connections for each coil. The interior rotor sections of the machine are likewise constructed on supporting rotor disks of composite material, and have pole pieces molded into place during disk manufacture which are wound on both sides of the supporting disk. The pole pieces have damper slots in their faces for receiving a damper winding. An outer support cylinder at the circumference of the supporting rotor disk structurally supports components of the rotor. Cover pieces are provided at the sides of the rotor sections, facing the stator sections. The structures disclosed produce a practical design with improved efficiency and reactance levels.
Inventors
- 👤 Dennis James Scott
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 15:53
CPC Classifications
H; H02; H02K; H02K23/00; H02K23/54; H02K1/00; H02K1/02; H02K16/00; H02K19/00
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
129 words
An improved disk-type electrical machine comprising: a rotatable shaft (308); two end stator sections (1202) fixed relative to the rotation of the shaft (308), each carrying stator coils (1204); at least one interior rotor section (312) rotating with the shaft (308), comprising: rotor supporting means (702) for holding components of the interior rotor section (312), said rotor supporting means (702) being nonconductive of electricity and nonmagnetic and having two sides; a plurality of rotor flux transmitting means (706) passing through the rotor supporting means (702) for transmitting magnetic flux between the two sides of the rotor supporting means (702), said flux transmitting means protruding from the rotor supporting means (702) on each side thereof so as to define coil regions (805) about which rotor field windings (314) are wound.
Claim 2
Dependent Claim
166 words
The machine of claim 1 having at least two interior rotor sections (312) and further including at least one stator section (402), the stator section (402) being located between two interior rotor sections (312), with the stator section (402) comprising: stator supporting means (404) for holding components of the stator section (402), said stator supporting means (404) being nonconductive of electricity and nonmagnetic and having two sides; a plurality of stator flux transmitting means (406) passing through the stator supporting means (404) for transmitting magnetic flux between the two sides of the stator supporting means (404), said stator flux transmitting means (406) protruding from the stator supporting means (404) on each side thereof so as to define slot regions (412) between the individual flux transmitting means; a plurality of coil means (410) connected to form a single winding, wherein each coil means (410) includes a layer (506, 508) placed in a slot region (412) of each of the two sides of the stator supporting means (404).
Claim 3
Dependent Claim
21 words
The machine of claim 1 wherein the stator flux transmitting means (406) are stator teeth constructed from micro-laminated cut steel particles.
Claim 4
Dependent Claim
19 words
The machine of claim 1 wherein the stator supporting means (404) is a stator disk of composite fiber material.
Claim 5
Dependent Claim
27 words
The machine of claim 4 wherein the stator flux transmitting means (406) are stator teeth which are molded into the stator supporting means (404) during manufacture thereof.
Claim 6
Dependent Claim
17 words
The machine of claim 5 wherein the stator teeth (406) are constructed from micro-laminated cut steel particles.
Claim 7
Dependent Claim
51 words
The machine of claim 1 further including stator connecting means (414) attached to the stator supporting means (404) for electrically connecting portions of each coil means (410) on one side of the stator supporting means (404) to portions of a coil means (410) on the other side of the supporting means.
Claim 8
Dependent Claim
18 words
The machine of claim 7 wherein the stator connecting means (414) pass through the stator supporting means (404).
Claim 9
Dependent Claim
40 words
The machine of claim 7 wherein the coil means (410) includes a plurality of coil turns (506, 508), and electrical connections made by the stator connecting means (414) include connections between said turns (506, 508) within the coil means (410).
Claim 10
Dependent Claim
75 words
The machine of claim 7 wherein each coil means (410) includes a start lead (502) and a finish lead (504) for connecting the coil means (410) to other components, wherein the electrical connections made by the stator connecting means (414) include connections of the finish lead (504) of one coil means (410) to the start lead (502) of another coil means (410) which is to be connected in series with the first coil means (410).
Claim 11
Dependent Claim
23 words
The machine of claim 8 wherein the stator connecting means (414) are molded into the stator supporting means (404) during the manufacture thereof.
Claim 12
Dependent Claim
30 words
The machine of claim 11 wherein the stator connecting means (414) comprise blocks of copper material which are provided with means for attaching conductors of the coil means (410) thereto.
Claim 13
Dependent Claim
87 words
The machine of claim 7 wherein the stator supporting means (404) is a substantially circular ringlike disk having a circular, radially inward edge and a circular, radially outward edge, and wherein the stator connecting means (414) are spaced about the radially outward edge of the supporting means to make necessary electrical connections of the coil means (410) from one side of the stator supporting means (404) to the other side of the stator supporting means (404) at the radially outward edge of the stator supporting means (404).
Claim 14
Dependent Claim
66 words
The machine of claim 13 wherein the coil means (410) are continuously constructed in the region of the radially inward edge of the stator supporting means (404) and are mounted so as to pass from one side of the stator supporting means (404), around the radially inward edge of the stator supporting means (404), and thus to the other side of the stator supporting means (404).
Claim 15
Dependent Claim
21 words
The machine of claim 2 wherein the rotor flux transmitting means (706) are rotor poles constructed from micro-laminated cut steel particles.
Claim 16
Dependent Claim
19 words
The machine of claim 2 wherein the rotor supporting means (702) is a rotor disk of composite fiber material.
Claim 17
Dependent Claim
27 words
The machine of claim 16 wherein the rotor flux transmitting means (706) are rotor poles which are molded into the rotor supporting means (702) during manufacture thereof.
Claim 18
Dependent Claim
17 words
The machine of claim 17 wherein the rotor poles (706) are constructed from micro-laminated cut steel particles.
Claim 19
Dependent Claim
45 words
The machine of claim 2 further including rotor connecting means (1004) attached to the rotor supporting means (702) for electrically connecting circuit elements on one side of the rotor supporting means (702) to circuit elements on the other side of the rotor supporting means (702).
Claim 20
Dependent Claim
18 words
The machine of claim 19 wherein the rotor connecting means (1004) pass through the rotor supporting means (702).
Claim 21
Dependent Claim
23 words
The machine of claim 20 wherein the rotor connecting means (1004) are molded into the rotor supporting means (702) during the manufacture thereof.
Claim 22
Dependent Claim
25 words
The machine of claim 19 wherein the rotor connecting means (1004) comprise blocks of copper material which are provided with means for attaching conductors thereto.
Claim 23
Dependent Claim
42 words
The machine of claim 16 wherein the rotor supporting means (702) includes a substantially circular ringlike disk having a circular, radially inward edge and a circular, radially outward edge, wherein the radially inward edge is adapted for connection to a shaft (308).
Claim 24
Dependent Claim
50 words
The machine of claim 23 wherein the rotor supporting means (702) further includes cylindrical ring means (704) at said radially outward edge for providing a centripetal force to hold components of the rotor section (312) stationary with respect to the rotor section (312) during rotation of the rotor section (312).
Claim 25
Dependent Claim
42 words
The machine of claim 24 wherein the cylindrical ring means (704) is a cylindrical rim joined to the radially outward edge of the supporting means at points in a plane perpendicular to and bisecting the central longitudinal axis of the cylindrical rim.
Claim 26
Dependent Claim
17 words
The machine of claim 24 wherein the cylindrical ring means (704) is constructed of composite fiber material.
Claim 27
Dependent Claim
59 words
The machine of claim 2 wherein the rotor flux transmitting means (706) are rotor poles having a pole body (802) passing through the rotor supporting means (702) and two pole faces (804) at the ends of the pole body (802), said pole faces (804) being provided with damping means (902) for controlling reactances and time constants in the machine.
Claim 28
Dependent Claim
33 words
The machine of claim 27 wherein the pole faces (804) on at least one side of the rotor supporting means (702) are providing with damper slots (806) adapted to receive damper bars (904).
Claim 29
Dependent Claim
53 words
The machine of claim 28 wherein at least one damper winding (902) is provided for a side of the rotor supporting means (702), comprising an outer damper shorting ring (712), an inner damper shorting ring (714), and damper bars (904) adapted to fit in the damper slots (806) of the pole faces (804).
Claim 30
Dependent Claim
32 words
The machine of claim 2 wherein the rotor section (312) further includes a non-magnetic, nonconductive cover means (1104) for covering components on at least one side of the rotor supporting means (702).
Claim 31
Dependent Claim
36 words
The machine of claim 2 wherein the rotor section (312) further includes a non-magnetic, nonconductive cover means (1104) for providing additional structural support to components on at least one side of the rotor supporting means (702).
Claim 32
Dependent Claim
33 words
The machine of claim 30 wherein the cover means (1104) is molded over the side of the rotor section (312) following mounting of components on the side of the rotor supporting means (702).
Claim 33
Dependent Claim
33 words
The machine of claim 31 wherein the cover means (1104) is molded over the side of the rotor section (312) following mounting of components on the side of the rotor supporting means (702).
Claim 34
Dependent Claim
126 words
A stator section (402) for a disk-type electrical machine comprising: supporting means (404) for holding components of the stator section (402), said supporting means (404) being nonconductive of electricity and nonmagnetic and having two sides; a plurality of flux transmitting means (406) passing through the supporting means (404) for transmitting magnetic flux between the two sides of the supporting means (404), said flux transmitting means (406) protruding from the supporting means (404) on each side thereof so as to define slot regions (412) between the individual flux transmitting means (406); a plurality of coil means (410) connected to form a single winding; wherein each coil means (410) includes a layer placed in a slot region of each of the two sides of the supporting means (404).
Claim 35
Dependent Claim
22 words
The stator section (402) of claim 34 wherein the flux transmitting means (406) are stator teeth constructed from micro-laminated cut steel particles.
Claim 36
Dependent Claim
20 words
The stator section (402) of claim 34 wherein the supporting means (404) is a stator disk of composite fiber material.
Claim 37
Dependent Claim
27 words
The stator section (402) of claim 36 wherein the flux transmitting means (406) are stator teeth which are molded into the supporting means (404) during manufacture thereof.
Claim 38
Dependent Claim
19 words
The stator section (402) of claim 37 wherein the stator teeth (406) are constructed from micro-laminated cut steel particles.
Claim 39
Dependent Claim
51 words
The stator section (402) of claim 34 further including connecting means (414) attached to the supporting means (404) for electrically connecting portions of each coil means (410) on one side of the supporting means (404) to portions of a coil means (410) on the other side of the supporting means (404).
Claim 40
Dependent Claim
18 words
The stator section (402) of claim 39 wherein the connecting means (414) pass through the supporting means (404).
Claim 41
Dependent Claim
41 words
The stator section (402) of claim 39 wherein the coil means (410) includes a plurality of coil turns (506, 508), and electrical connections made by the connecting means (414) include connections between said turns (506, 508) within the coil means (410).
Claim 42
Dependent Claim
76 words
The stator section (402) of claim 39 wherein each coil means (410) includes a start lead (502) and a finish lead (504) for connecting the coil means (410) to other components, wherein the electrical connections made by the connecting means (414) include connections of the finish lead (504) of one coil means (410) to the start lead (502) of another coil means (410) which is to be connected in series with the first coil means (410).
Claim 43
Dependent Claim
23 words
The stator section (402) of claim 40 wherein the connecting means (414) are molded into the supporting means (404) during the manufacture thereof.
Claim 44
Dependent Claim
31 words
The stator section (402) of claim 43 wherein the connecting means (414) comprise blocks of copper material which are provided with means for attaching conductors of the coil means (410) thereto.
Claim 45
Dependent Claim
85 words
The stator section (402) of claim 43 wherein the supporting means (404) is a substantially circular ringlike disk having a circular, radially inward edge and a circular, radially outward edge, and wherein the connecting means (414) are spaced about the radially outward edge of the supporting means (404) to make necessary electrical connections of the coil means (410) from one side of the supporting means (404) to the other side of the supporting means (404) at the radially outward edge of the supporting means (404).
Claim 46
Dependent Claim
64 words
The stator section (402) of claim 45 wherein the coil means (410) are continuously constructed in the region of the radially inward edge of the supporting means (404) and are mounted so as to pass from one side of the supporting means (404), around the radially inward edge of the supporting means (404), and thus to the other side of the supporting means (404).
References Cited (Backward Citations)
No citation records indexed.
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