Dual converter having shared gate pulse generator
Abstract
Abstract AN ELECTRICAL MOTOR DRIVE WHICH MAY BE OPERATED IN THE FORWARD OR REVERSE DIRECTION AND WHICH IS SUPPLIED FROM A POWER UNIT HAVING A FIRST SET OF THYRISTORS FOR SUPPLYING CURRENT IN THE FORWARD DIRECTION AND A SECOND SET OF THYRISTORS FOR SUPPLYING CURRENT IN THE REVERSE DIRECTION, AND WHEREIN A COMMON GATE PULSE GENERATOR IS SELECTIVELY CONNECTED BY A SWITCHING RELAY TO THE FORWARD OR REVERSE SET OF THYRISTORS DEPENDING UPON THE DIRECTION OF ROTATION DESIRED. THE SWITCHING RELAY, IN TURN, IS CONTROLLED BY A COMPARISON OF THE BUS BOLTAGE FROM THE MOTOR WITH THE OUTPUT VOLTAGE OF A VOLTAGE CONTROLLER FOR THE MOTOR. IN THIS MANNER, THE DEADBAND BETWEEN THE FORWARD AND REVERSE CONDUCTION MODES IN MINIMIZED.
Inventors
- 👤 Emil T Schonholzer
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |