US3849683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pole element for a synchronous electric machine having a laminated link rotor
Assignee: Siemens AG
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Filing: 1973-05-04
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Granted: 1974-11-19
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Expires: 1993-05-04
Abstract
Abstract A pole element for a synchronous electric machine having a laminated link rotor of the type mounted on the rim of the rotor by a base member integrally formed therewith, including a pair of partial poles disposed at the ends of the pole element and at least one complete pole disposed therebetween and spaced apart from the partial poles.
Inventors
- 👤 W Leistner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:56
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/28; H02K1/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
209 words
In an electric synchronous machine equipped with a laminated rotor and a pole arrangement mountable on the rotor, the pole arrangement comprising: a plurality of pole elements disposed one next to the other about the circumference of the rotor; and mounting means for mounting said pole elements on the rotor including for each of said pole elements an opening formed in the rotor, and a foot-like projection extending from the base of the pole element for engaging said rotor in said opening thereof; each of said pole elements including a pair of half poles disposed at the ends of the element, a complete pole disposed centered between said half poles, and an excitation winding for generating flux that passes into and out of the rotor, said complete pole being so configured and spaced apart from said half poles to conjointly define therewith respective pole gaps having a substantially rectangular shape for receiving said excitation winding therein in surrounding relation to said complete pole and for permitting the insertion and removal of said excitation winding in radial direction, said complete pole and said half poles conjointly defining a magnetic circuit for substantially confining all of said flux of said winding to the pole element in its passage through the rotor.
Claim 2
Dependent Claim
209 words
In an electric synchronous machine equipped with a laminated rotor and a pole arrangement mountable on the rotor, the pole arrangement comprising: a plurality of pole elements disposed one next to the other about the circumference of the rotor; and mounting means for mounting said pole elements on the rotor including for each of said pole elements an opening formed in the rotor, and a foot-like projection extending from the base of the pole element for engaging said rotor in said opening thereof; each of said pole elements including a pair of half poles disposed at the ends of the element, a complete pole disposed centered between said half poles, and an excitation winding for generating flux that passes into and out of the rotor, said complete pole being so configured and spaced apart from said half poles to conjointly define therewith respective pole gaps having a substantially rectangular shape for receiving said excitation winding therein in surrounding relation to said complete pole and for permitting the insertion and removal of said excitation winding in radial direction, said complete pole and said half poles conjointly defining a magnetic circuit for substantially confining all of said flux of said winding to the pole element in its passage through the rotor.
Claim 3
Dependent Claim
45 words
The pole arrangement of claim 1 wherein the laminated rotor has respective end-faces, each two mutually adjacent ones of said pole elements conjointly defining a gap therebetween, and means for electrically interconnecting the half poles of adjacent pole elements at the end-faces of the rotor.
Claim 4
Dependent Claim
16 words
The pole arrangement of claim 2, said interconnecting means comprising a flexible, electrically conductive strap member.
Claim 5
Dependent Claim
36 words
The pole arrangement of claim 2, each of said pole elements having respective end-plates, said pole arrangement comprising damper bars arranged in each of said pole elements and welded at respective ends thereof to said end-plates.
Claim 6
Dependent Claim
46 words
The pole arrangement of claim 1, said excitation winding consisting of a plurality of coils arranged so as to define a plurality of cooling channels for conducting a coolant to cool said winding, said pole gaps being completely filled with said coils except for said channels.
Claim 7
Dependent Claim
56 words
The pole arrangement of claim 5, each of said gaps having mutually parallel side walls connected by a bottom wall, the conductor of said coils being flat conductors having flat sides, the conductors being spaced one from the other so as to define one of said channels between each two mutually adjacent ones of the conductors.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |