US3280334A
Expired / Lapsed
US
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Means for connecting alternating current networks
Assignee: ABB Norden Holding AB
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Filing: 1966-02-03
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Granted: 1966-10-18
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Expires: 1986-02-03
Abstract
No abstract record available.
Inventors
- 👤 Uhlmann Erich
- 👤 Hedlund Iwan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:17
CPC Classifications
H; H02; H02J; H02J3/00; H02J3/36; H02M; H02M5/00; H02M5/02; H02M5/04; H02M5/20; H02M5/40; H02M5/42; H02M5/44; H02M5/443; H02M5/447; Y; Y02; Y02E; Y02E60/00; Y02E60/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
CONVERTER STATION FOR CONNECTING TWO A.C. NETWORKS ADJACENT TO EACH OTHER, SAID CONVERTER STATION COMPISING AT LEAST TWO PAIRS OF CONVERTERS; ONE CONVERTER OF EACH PAIR OPERATING AS A RECTIFIER AND THE OTHER CONVERTER AS AN INVERTER; MEANS CONNECTING THE A.C. SIDE OF ALL SAID CONVERTER OPERATING AS RECTIFIERS TO ONE OF SAID A.C. NET WORK; MEANS CONNECTING THE A.C. SIDE OF ALL SAID CONVERTERS OPERATING AS INVERTERS TO THE OTHER A.C. NETWORK; AND MEANS CONNECTING THE D.C. SIDES OF ALL SAID PAIRS OF CONVERTERS IN SERIES IN A CLOSED D.C. CIRCUIT; EACH PAIR OF CONVERTERS HAVING A BY-PASS RECTIFIER CONNECTED ON ITS D.C. SIDES; A SHORT CIRCUITING MEANS CONNECTED IN PARALLEL WITH EACH BY-PASS RECTIFIER; ISOLATING SWITCHES FOR EACH PAIR OF CONVERTERS FOR DISCONNECTING SAID PAIR OF CONVERTERS TOGETHER WITH THE CONNECTED BY-PASS RECTIFIER FROM SAID CLOSED D.C. CIRCUIT; SAID CLOSED D.C. CIRCUIT COMPRISING SAID SHORT CIRCUITING MEANS.
Claim 2
Dependent Claim
149 words
CONVERTER STATION FOR CONNECTING TWO A.C. NETWORKS ADJACENT TO EACH OTHER, SAID CONVERTER STATION COMPISING AT LEAST TWO PAIRS OF CONVERTERS; ONE CONVERTER OF EACH PAIR OPERATING AS A RECTIFIER AND THE OTHER CONVERTER AS AN INVERTER; MEANS CONNECTING THE A.C. SIDE OF ALL SAID CONVERTER OPERATING AS RECTIFIERS TO ONE OF SAID A.C. NET WORK; MEANS CONNECTING THE A.C. SIDE OF ALL SAID CONVERTERS OPERATING AS INVERTERS TO THE OTHER A.C. NETWORK; AND MEANS CONNECTING THE D.C. SIDES OF ALL SAID PAIRS OF CONVERTERS IN SERIES IN A CLOSED D.C. CIRCUIT; EACH PAIR OF CONVERTERS HAVING A BY-PASS RECTIFIER CONNECTED ON ITS D.C. SIDES; A SHORT CIRCUITING MEANS CONNECTED IN PARALLEL WITH EACH BY-PASS RECTIFIER; ISOLATING SWITCHES FOR EACH PAIR OF CONVERTERS FOR DISCONNECTING SAID PAIR OF CONVERTERS TOGETHER WITH THE CONNECTED BY-PASS RECTIFIER FROM SAID CLOSED D.C. CIRCUIT; SAID CLOSED D.C. CIRCUIT COMPRISING SAID SHORT CIRCUITING MEANS.
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |