Patent US3609508A successfully refreshed from Google Patents.
US3609508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled valve-type converter
Assignee: Individual
•
Filing: 1969-02-20
•
Granted: 1971-09-28
•
Expires: 1989-02-20
Abstract
Abstract A controlled valve-type converter for substations of DC electric transmission lines with a plurality of series-connected threephase valve-type bridges, wherein each of the devices adapted for short-time shunting of the bridge is so implemented that the operating valves of the bridge are made use of as shunting valves.
Inventors
- 👤 Kazimir Borisovich Gusakovsky
- 👤 Evgeny Mitrofanovich Semisalov
- 👤 Vikenty Ivanovich Shiryaev
- 👤 Boris Sergeevic Melik-Sarkisov
- 👤 Anna Matveena Kirsanova
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:17
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/66; H02M7/68; H02M7/72; H02M7/75; H02M7/757; H02M7/7575; H02H; H02H7/00; H02H7/10; H02H7/12; H02H7/125; H02H7/127; Y; Y02; Y02E; Y02E60/00; Y02E60/60
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
193 words
A controlled valve-type converter for substations of DC electric transmission lines, comprising at least two seriesinterconnected three-phase valve-type bridges; devices for controlling said bridges electrically connected to each of said bridges; electrical protection units for said bridges electrically connected to each of said bridges; a plurality of voltage transformers with one voltage transformer corresponding to a respective valve in said bridges, said voltage transformers being included in said devices for short-time shunting of said bridges; each of said plurality of voltage transformers having one separate primary winding and two separate secondary windings; the primary windings of said voltage transformers being connected to the output of said bridge protection unit; one-phase bridge rectifiers serially interconnected at their outputs, one of the secondary windings of said transformers being directly connected to the input of one of said rectifiers, and the other secondary winding being connected through a capacitor to the input of the other of said rectifiers; electrical separating members connected to the inputs of said devices for controlling said valve and to input grid circuits of said valves of the phase selected by the bridge protection unit for shunting each of the three-phase bridges.
Claim 2
Dependent Claim
193 words
A controlled valve-type converter for substations of DC electric transmission lines, comprising at least two seriesinterconnected three-phase valve-type bridges; devices for controlling said bridges electrically connected to each of said bridges; electrical protection units for said bridges electrically connected to each of said bridges; a plurality of voltage transformers with one voltage transformer corresponding to a respective valve in said bridges, said voltage transformers being included in said devices for short-time shunting of said bridges; each of said plurality of voltage transformers having one separate primary winding and two separate secondary windings; the primary windings of said voltage transformers being connected to the output of said bridge protection unit; one-phase bridge rectifiers serially interconnected at their outputs, one of the secondary windings of said transformers being directly connected to the input of one of said rectifiers, and the other secondary winding being connected through a capacitor to the input of the other of said rectifiers; electrical separating members connected to the inputs of said devices for controlling said valve and to input grid circuits of said valves of the phase selected by the bridge protection unit for shunting each of the three-phase bridges.
Claim 3
Dependent Claim
29 words
A controlled valve-type converter as claimed in claim 1, wherein said valves are normally operating valves and are shunting valves when said short-time shunting of said bridge is effected.
Claim 4
Dependent Claim
35 words
A controlled valve-type converter as claimed in claim 1, wherein each of said separating members comprises a series connection of a resistor and a first diode, and a second diode connected to said first diode.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |