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Patent US3735225A successfully refreshed from Google Patents.
US3735225A
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Control device for switching rectifier systems
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1971-08-25
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Granted: 1973-05-22
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Expires: 1991-08-25
Abstract
Abstract In a system for directing a current controller of the type employing two groups of controlled rectifiers for delivering current in respectively opposite directions, the system including a current controller for directly operating the rectifiers and a higher order controller connected for influencing the current controller and having an integrating component, means are provided for blocking the integrating component input during the changeover of operation from one rectifier group to another.
Inventors
- 👤 E Raatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:23
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/145; H02M7/155; H02M7/162; H02M7/1623; H02M7/1626; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/292; H02P7/293; Y; Y10; Y10S; Y10S388/00; Y10S388/90; Y10S388/906
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
149 words
In a system for directing a current controller of the type employing two groups of controlled rectifiers for delivering current in respectively opposite directions through a load, the system being composed of a pulse generator connected for applying conduction control pulses to one group of rectifiers at a time, means for preventing the transmission of pulses to either rectifier group for a time interval when the delivery of pulses is being shifted from one rectifier group to the other, a current controller connected for controlling the production of pulses by the pulse generator, and at least one higher order controller connected to apply a control signal to the current controller, the higher order controller having a signal integrating member, the improvement comprising means connected to said integrating member for suppressing the action of said integrating member during each such time interval when the transmission of pulses is being prevented.
Claim 2
Dependent Claim
149 words
In a system for directing a current controller of the type employing two groups of controlled rectifiers for delivering current in respectively opposite directions through a load, the system being composed of a pulse generator connected for applying conduction control pulses to one group of rectifiers at a time, means for preventing the transmission of pulses to either rectifier group for a time interval when the delivery of pulses is being shifted from one rectifier group to the other, a current controller connected for controlling the production of pulses by the pulse generator, and at least one higher order controller connected to apply a control signal to the current controller, the higher order controller having a signal integrating member, the improvement comprising means connected to said integrating member for suppressing the action of said integrating member during each such time interval when the transmission of pulses is being prevented.
Claim 3
Dependent Claim
59 words
An arrangement as defined in claim 1 wherein said higher order controller is a speed controller with proportional-integrating behavior and comprises a parallel connection of a proportional member and an integrating member, and an electronic switch connected in the input of said integrating member for blocking the input of said integrating member for switching during each such time interval.
Claim 4
Dependent Claim
45 words
An arrangement as defined in claim 2 wherein said means for preventing blocks the output of said current controller during each such interval and is connected to render said electronic switch nonconductive or conductive in synchronism with the blocking or release of said current controller.
References Cited (Backward Citations)
US3119058A
Cited
US3599063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |