Circuit arrangement for regulating the frequency of electrical power lines aboard a ship
Abstract
Abstract A FIRST GENERATOR CURRENT REGULATOR IS CONNECTED TO THE CONTROLLED RECTIFIER OF AN INVERTER CONNECTED BETWEEN A SYNCHRONOUS GENERATOR MECHANICALLY COUPLED TO THE PROPELLER SHAFT OF A SHIP AND THE ELECTRICAL POWER LINES ABOARD THE SHIP IN THE OUTPUT CIRCUIT OF THE GENERATOR. A SECOND GENERATOR CURRENT REGULATOR IS CONNECTED TO A SECOND CONTROLLED RECTIFIER CONNECTED BETWEEN THE ELECTRICAL POWER LINES AND THE GENERATOR IN THE EXCITATION CIRCUIT OF THE GENERATOR. THE ACTUAL FREQUENCY OF THE POWER LINES AND A REFERENCE FREQUENCY ARE UTILIZED TO DERIVE A REFERENCE CURRENT WHICH IS SUPPLIED TO THE FIRST AD SECOND GENERATOR CURRENT REGULATORS. ONE OF THE ACTUAL CURRENT IN THE POWER LINES AND THE REFERENCE CURRENT OF THE FIRST GENERATOR CURRENT REGULATOR IS VARIED RELATIVE TO THOSE OF THE SECOND GENERATOR CURRENT REGULATOR THEREBY COMPENSATING FOR SPEED VARIATIONS OF THE PROPELLER SHAFT.
Inventors
- 👤 Karl-Heinz Bayer
- 👤 Hermann Waldmann
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |