US3586958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dc transmission device for superconductive cable
Assignee: Siemens AG
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Filing: 1969-03-24
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Granted: 1971-06-22
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Expires: 1989-03-24
Abstract
Abstract Current converters subjected to an upper harmonic voltage are coupled to each end of a superconductive cable via corresponding voltage dividers. Each voltage divider comprises a smoothing inductor, having a low resistance to direct current, coupled to the corresponding converter and a capacitor and an inductor, having a high resistance to direct current, connected to a point at ground potential. The capacitors comprise superconductive material of the cable, covered by electrically insulating material which in turn is covered by inductive material.
Inventors
- 👤 Wilhelm Kafka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:37
CPC Classifications
H; H02; H02J; H02J3/00; H02J3/36; H01; H01B; H01B12/00; H02J1/00; H02J1/06; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y02E60/00; Y02E60/60
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
147 words
A DC transmisSion device for a superconductive cable having two ends, said transmission device comprising current converter means coupled to each end of said cable, said current converter means producing an upper harmonic voltage; and voltage divider means interposed and coupled between each end of said cable and the corresponding current converter means for decreasing the upper harmonic voltage at said cable to a fraction of the upper harmonic voltage at said current converter means, each of said voltage divider means having a part having a low resistance to direct current coupled in series between the corresponding end of the cable and the corresponding current converter means and another part having a high resistance to direct current and being connected between the corresponding end of the cable and a point at ground potential whereby the voltage at said cable is substantially unaffected by said voltage divider means.
Claim 2
Dependent Claim
147 words
A DC transmisSion device for a superconductive cable having two ends, said transmission device comprising current converter means coupled to each end of said cable, said current converter means producing an upper harmonic voltage; and voltage divider means interposed and coupled between each end of said cable and the corresponding current converter means for decreasing the upper harmonic voltage at said cable to a fraction of the upper harmonic voltage at said current converter means, each of said voltage divider means having a part having a low resistance to direct current coupled in series between the corresponding end of the cable and the corresponding current converter means and another part having a high resistance to direct current and being connected between the corresponding end of the cable and a point at ground potential whereby the voltage at said cable is substantially unaffected by said voltage divider means.
Claim 3
Dependent Claim
24 words
A DC transmission device as claimed in claim 1, further comprising compensating means connected to said cable at intervals of less than one-quarter wavelength.
Claim 4
Dependent Claim
39 words
A DC transmission device as claimed in claim 1, further comprising compensating means comprising a plurality of compensators each comprising a capacitor and an inductor connected in series circuit arrangement between said cable and a point at ground potential.
Claim 5
Dependent Claim
153 words
A DC transmission device for a superconductive cable having two ends, said transmission device comprising current converter means coupled to each end of said cable, said current converter means producing an upper harmonic voltage; and voltage divider means interposed and coupled between each end of said cable and the corresponding current converter means for decreasing the upper harmonic voltage at said cable to a fraction of the upper harmonic voltage at said current converter means, each of said voltage divider means having a smoothing inductance having a low resistance to direct current coupled in series between the corresponding end of the cable and the corresponding current converter means and an inductive reactance and a capacitive reactance having a high resistance to direct current and being connected between the corresponding end of the cable and a point at ground potential whereby the voltage at said cable is substantially unaffected by said voltage divider means.
Claim 6
Dependent Claim
153 words
A DC transmission device for a superconductive cable having two ends, said transmission device comprising current converter means coupled to each end of said cable, said current converter means producing an upper harmonic voltage; and voltage divider means interposed and coupled between each end of said cable and the corresponding current converter means for decreasing the upper harmonic voltage at said cable to a fraction of the upper harmonic voltage at said current converter means, each of said voltage divider means having a smoothing inductance having a low resistance to direct current coupled in series between the corresponding end of the cable and the corresponding current converter means and an inductive reactance and a capacitive reactance having a high resistance to direct current and being connected between the corresponding end of the cable and a point at ground potential whereby the voltage at said cable is substantially unaffected by said voltage divider means.
Claim 7
Dependent Claim
140 words
A DC transmission device for a superconductive cable having two ends, said transmission device comprising current converter means coupled to each end of said cable, said current converter means producing an upper harmonic voltage; and voltage divider means comprising a plurality of voltage dividers interposed and coupled between each end of said cable and the corresponding current converter means for decreasing the upper harmonic voltage at said cable to a fraction of the upper harmonic voltage at said current converter means, each of said voltage divider means having a smoothing inductor connected between an end of said cable and a current converter means and a capacitor and an inductor connected in series circuit arrangement between an end of the cable and a point at ground potential whereby the voltage at said cable is substantially unaffected by said voltage divider means.
Claim 8
Dependent Claim
140 words
A DC transmission device for a superconductive cable having two ends, said transmission device comprising current converter means coupled to each end of said cable, said current converter means producing an upper harmonic voltage; and voltage divider means comprising a plurality of voltage dividers interposed and coupled between each end of said cable and the corresponding current converter means for decreasing the upper harmonic voltage at said cable to a fraction of the upper harmonic voltage at said current converter means, each of said voltage divider means having a smoothing inductor connected between an end of said cable and a current converter means and a capacitor and an inductor connected in series circuit arrangement between an end of the cable and a point at ground potential whereby the voltage at said cable is substantially unaffected by said voltage divider means.
Claim 9
Dependent Claim
27 words
A DC transmission device as claimed in claim 12, wherein the smoothing inductor of each voltage divider couples the corresponding voltage divider to said current converter means.
Claim 10
Dependent Claim
46 words
A DC transmission device as claimed in claim 5, wherein said cable comprises superconductive material, electrically insulating material covering said superconductive material and normally conductive material covering said insulating material, the capacitor of each of said voltage dividers comprising said superconductive, insulating and normally conductive materials.
Claim 11
Dependent Claim
26 words
A DC transmission device as claimed in claim 7, wherein the capacitor of each of said compensators also comprises said superconductive, insulating and normally conductive materials.
Claim 12
Dependent Claim
168 words
A DC transmIssion device for a superconductive cable having two ends, said transmission device comprising current converter means coupled to each end of said cable, said current converter means producing an upper harmonic voltage; voltage divider means comprising a plurality of voltage dividers interposed and coupled between each end of said cable and the corresponding current converter means for decreasing the upper harmonic voltage at said cable to a fraction of the upper harmonic voltage at said current converter means, each of said voltage divider means having a smoothing inductor connected between an end of said cable and a current converter means and a capacitor and an inductor connected in series circuit arrangement between an end of the cable and a point at ground potential whereby the voltage at said cable is substantially unaffected by said voltage divider means; and compensating means comprising a plurality of compensators each comprising a capacitor and an inductor connected in series circuit arrangement between said cable and a point at ground potential.
Claim 13
Dependent Claim
168 words
A DC transmIssion device for a superconductive cable having two ends, said transmission device comprising current converter means coupled to each end of said cable, said current converter means producing an upper harmonic voltage; voltage divider means comprising a plurality of voltage dividers interposed and coupled between each end of said cable and the corresponding current converter means for decreasing the upper harmonic voltage at said cable to a fraction of the upper harmonic voltage at said current converter means, each of said voltage divider means having a smoothing inductor connected between an end of said cable and a current converter means and a capacitor and an inductor connected in series circuit arrangement between an end of the cable and a point at ground potential whereby the voltage at said cable is substantially unaffected by said voltage divider means; and compensating means comprising a plurality of compensators each comprising a capacitor and an inductor connected in series circuit arrangement between said cable and a point at ground potential.
Claim 14
Dependent Claim
216 words
A DC transmission device for a superconductive cable comprising superconductive material, electrically insulating material covering said superconductive material and normally conductive material covering said insulating material, said cable having two ends, said transmission device comprising current converter means coupled to each end of said cable, said current converter means producing an upper harmonic voltage; voltage divider means interposed and coupled between each end of said cable and the corresponding current converter means for decreasing the upper harmonic voltage at said cable to a fraction of the upper harmonic voltage at said current converter means, each of said voltage divider means having a smoothing inductance having a low resistance to direct current coupled in series between the corresponding end of the cable and the corresponding current converter means and an inductive reactance and a capacitive reactance having a high resistance to direct current and being connected between the corresponding end of the cable and a point at ground potential whereby the voltage at said cable is substantially unaffected by said voltage divider means; and compensating means comprising a plurality of compensators each comprising a capacitor and an inductor connected in series circuit arrangement between said cable and a point at ground potential, the capacitor of each of said compensators comprising said superconductive, insulating and normally conductive materials.
Claim 15
Dependent Claim
216 words
A DC transmission device for a superconductive cable comprising superconductive material, electrically insulating material covering said superconductive material and normally conductive material covering said insulating material, said cable having two ends, said transmission device comprising current converter means coupled to each end of said cable, said current converter means producing an upper harmonic voltage; voltage divider means interposed and coupled between each end of said cable and the corresponding current converter means for decreasing the upper harmonic voltage at said cable to a fraction of the upper harmonic voltage at said current converter means, each of said voltage divider means having a smoothing inductance having a low resistance to direct current coupled in series between the corresponding end of the cable and the corresponding current converter means and an inductive reactance and a capacitive reactance having a high resistance to direct current and being connected between the corresponding end of the cable and a point at ground potential whereby the voltage at said cable is substantially unaffected by said voltage divider means; and compensating means comprising a plurality of compensators each comprising a capacitor and an inductor connected in series circuit arrangement between said cable and a point at ground potential, the capacitor of each of said compensators comprising said superconductive, insulating and normally conductive materials.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |