JPS549291B2 - - Google Patents
Info
- Publication number
- JPS549291B2 JPS549291B2 JP6409271A JP6409271A JPS549291B2 JP S549291 B2 JPS549291 B2 JP S549291B2 JP 6409271 A JP6409271 A JP 6409271A JP 6409271 A JP6409271 A JP 6409271A JP S549291 B2 JPS549291 B2 JP S549291B2
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/06—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors
- H02H7/062—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors for parallel connected generators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Protection Of Generators And Motors (AREA)
- Control Of Eletrric Generators (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Emergency Protection Circuit Devices (AREA)
- Protection Of Transformers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US7192570 US3683199A (en) | 1970-09-14 | 1970-09-14 | Over-{11 and underexcitation protection circuit for alternating current power systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS475622A JPS475622A (show.php) | 1972-03-24 |
| JPS549291B2 true JPS549291B2 (show.php) | 1979-04-23 |
Family
ID=22104473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6409271A Expired JPS549291B2 (show.php) | 1970-09-14 | 1971-08-24 |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US3683199A (show.php) |
| JP (1) | JPS549291B2 (show.php) |
| DE (1) | DE2145288A1 (show.php) |
| FR (1) | FR2107642A5 (show.php) |
| GB (1) | GB1350491A (show.php) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2358676C3 (de) * | 1973-11-24 | 1982-07-08 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Schaltungsanordnung zur Überwachung und Abschaltung eines über einen Regler gesteuerten Generators |
| US4348629A (en) * | 1980-05-22 | 1982-09-07 | Motorola, Inc. | Stator fault detector for automotive alternator battery charging systems |
| US4510399A (en) * | 1982-10-07 | 1985-04-09 | Westinghouse Electric Corp. | Demodulator circuit for parallel AC power systems |
| US4728806A (en) * | 1986-12-05 | 1988-03-01 | Westinghouse Electric Corp. | DC link variable speed constant frequency power source paralleling controls |
| US4731690A (en) * | 1986-12-05 | 1988-03-15 | Westinghouse Electrical Corp. | Real load unbalance protection system for parallel variable speed constant frequency electrical power systems |
| US4800291A (en) * | 1987-03-04 | 1989-01-24 | Basler Electric Company | Electronic circuit for control of a voltage regulator of an electrical generator |
| US4797570A (en) * | 1987-07-31 | 1989-01-10 | Westinghouse Electric Corp. | Automatic paralleling of AC power sources |
| US4766327A (en) * | 1987-07-31 | 1988-08-23 | Westinghouse Electric Corp. | Circuit and method for synchronizing power sources in a parallel AC electrical power system |
| US4754161A (en) * | 1987-07-31 | 1988-06-28 | Westinghouse Electric Corp. | Circuit and method for paralleling AC electrical power systems |
| JP2619539B2 (ja) * | 1989-11-02 | 1997-06-11 | 株式会社日立製作所 | 自動車用発電機 |
| US5047890A (en) * | 1990-03-12 | 1991-09-10 | Westinghouse Electric Corp. | Differential current protection circuits |
| US5770897A (en) * | 1996-09-16 | 1998-06-23 | Abb Power T&D Company Inc. | Hybrid solid state switch |
| US8120206B2 (en) * | 2008-09-10 | 2012-02-21 | Hamilton Sundstrand Corporation | Method of detecting a sustained parallel source condition |
| US10432120B2 (en) * | 2012-04-15 | 2019-10-01 | Hamilton Sundstrand Corporation | Automatic fault isolation methodology |
| EP4371234A1 (en) | 2021-07-15 | 2024-05-22 | Dolphin Design | Circuit for detecting timing violations in a digital circuit |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE527334A (show.php) * | 1953-03-16 | |||
| US3038089A (en) * | 1959-09-04 | 1962-06-05 | Collins Radio Co | Duo-transistor amplitude and frequency sensitive electronic switch |
| US3076902A (en) * | 1961-03-30 | 1963-02-05 | Hewlett Packard Co | Pulse circuits using diffused junction semiconductor devices |
| US3198961A (en) * | 1962-06-26 | 1965-08-03 | North American Aviation Inc | Quantizer producing digital-output whose polarity and repetition-rate are respectively determined by phase and amplitude by analog-in-put |
| FR1413938A (fr) * | 1964-07-31 | 1965-10-15 | Comp Generale Electricite | Perfectionnements aux discriminateurs de fréquence |
| US3369810A (en) * | 1964-09-28 | 1968-02-20 | American Mach & Foundry | Foul detector |
| US3480868A (en) * | 1967-02-13 | 1969-11-25 | Hughes Aircraft Co | Large error servo oscillation inhibitor |
| US3524997A (en) * | 1967-09-08 | 1970-08-18 | Gen Electric | Monolithic integrated phase control circuits |
| US3539820A (en) * | 1968-01-10 | 1970-11-10 | Westinghouse Electric Corp | Real load unbalance protection circuit for alternating current power sources connected for parallel operation |
-
1970
- 1970-09-14 US US7192570 patent/US3683199A/en not_active Expired - Lifetime
-
1971
- 1971-08-16 GB GB3831071A patent/GB1350491A/en not_active Expired
- 1971-08-24 JP JP6409271A patent/JPS549291B2/ja not_active Expired
- 1971-09-10 DE DE19712145288 patent/DE2145288A1/de active Pending
- 1971-09-14 FR FR7133063A patent/FR2107642A5/fr not_active Expired
- 1971-12-14 US US20787671 patent/US3748493A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR2107642A5 (show.php) | 1972-05-05 |
| DE2145288A1 (de) | 1972-03-16 |
| JPS475622A (show.php) | 1972-03-24 |
| GB1350491A (en) | 1974-04-18 |
| US3748493A (en) | 1973-07-24 |
| US3683199A (en) | 1972-08-08 |