Patent US3758836A successfully refreshed from Google Patents.
US3758836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric control system for alternating current circuit
Assignee: Individual
•
Filing: 1972-02-03
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Granted: 1973-09-11
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Expires: 1992-02-03
Abstract
Abstract When an alternating current motor is supplied with electric current from an electric power source through an inverter or frequency converter which is composed of controlled rectifiers and whose output terminals of a synchronous generator driven by a rotary machine, the inverter or frequency converter can be A.C. line commutated or separately excited type and simple; and if an electric power is delivered between the said electric power source and the said set of synchronous generator driven by rotary machine not through the said controlled rectifiers, the efficiency of the whole system can be high.
Inventors
- 👤 F Shibata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:21
CPC Classifications
B; B63; B63H; B63H23/00; B63H23/22; B63H23/24; B60; B60L; B60L15/00; B60L15/007; B60L15/20; B60L50/00; B60L50/50; B60L50/60; B60L50/61; B60L50/62; B60L2210/00; B60L2210/30; B60L2210/40; B60L2220/00; B60L2220/10; B60L2220/14; B60L2240/00; B60L2240/40; B60L2240/42; B60L2240/421; B60L2240/44; B60L2240/441; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62; Y02T10/64; Y02T10/70; Y02T10/7072; Y02T10/72; Y02T90/00; Y02T90/10; Y02T90/12; Y02T90/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
268 words
Electric control system for alternating current circuit which has a combination of: an alternating current motor which has a stator winding, a rotor and input terminals; an alternating current connection which is arranged to be able to supply the said alternating current motor with electric power; an electric power source which is arranged to be able to supply the said alternating current motor with electric power through the said alternating current connection; controlled rectifiers respectively having each gate or control electrode and respectively having main conductive part which means an inner circuit connected from anode to cathode and which is connected electrically between the said electric power source and the said alternating current motor; a synchronous generator having output terminals which are connected electrically with the input terminals of the said alternating current motor further which are connected electrically with the said main conductive parts of the controlled rectifiers; a rotating machine which is arranged to be able to drive the said synchronous generator; a phase shift control device and a firing circuit for the said controlled rectifiers which are electrically connected with the said each gate or control electrode of the controlled rectifiers; wherein the said electric power source is electrically connected with the combination set of synchronous generator with the said rotating machine through other circuit than that including the main conductive parts of the controlled rectifiers so that an electric power can be delivered between the said electric power source and the combination set of synchronous generator with the said rotating machine without passing through the said main conductive parts of the said controlled rectifiers.
Claim 2
Dependent Claim
268 words
Electric control system for alternating current circuit which has a combination of: an alternating current motor which has a stator winding, a rotor and input terminals; an alternating current connection which is arranged to be able to supply the said alternating current motor with electric power; an electric power source which is arranged to be able to supply the said alternating current motor with electric power through the said alternating current connection; controlled rectifiers respectively having each gate or control electrode and respectively having main conductive part which means an inner circuit connected from anode to cathode and which is connected electrically between the said electric power source and the said alternating current motor; a synchronous generator having output terminals which are connected electrically with the input terminals of the said alternating current motor further which are connected electrically with the said main conductive parts of the controlled rectifiers; a rotating machine which is arranged to be able to drive the said synchronous generator; a phase shift control device and a firing circuit for the said controlled rectifiers which are electrically connected with the said each gate or control electrode of the controlled rectifiers; wherein the said electric power source is electrically connected with the combination set of synchronous generator with the said rotating machine through other circuit than that including the main conductive parts of the controlled rectifiers so that an electric power can be delivered between the said electric power source and the combination set of synchronous generator with the said rotating machine without passing through the said main conductive parts of the said controlled rectifiers.
Claim 3
Dependent Claim
26 words
Electric control system for alternating current circuit which comprises in combination as set forth in claim 1, in which the rotating machine is a prime mover.
Claim 4
Dependent Claim
28 words
Electric control system for alternating current circuit which comprises in combination as set forth in claim 1, in which the electric power source is an electric battery group.
Claim 5
Dependent Claim
35 words
Electric control system for alternating current circuit which comprises in combination as set forth in claim 1, in which the rotating machine is an electric motor supplied with electric power from the electric power source.
Claim 6
Dependent Claim
29 words
Electric control system for alternating current circuit which comprises in combination as set forth in claim 1, in which the controlled rectifiers are used as elements of an inverter.
Claim 7
Dependent Claim
90 words
Electric control system for alternating current circuit which comprises in combination as set forth in claim 1, in which the electric power source is an alternating current power source, and the rotating machine is composed of a direct current motor arranged to be supplied with electric power from the said electric power source through s convErter composed of controlled rectifiers, and further in which the controlled rectifiers described in clain 1 are used as elements of an inverter having input terminals connected electrically with output terminals of the said converter.
Claim 8
Dependent Claim
44 words
Electric control system for alternating current circuit which comprises in combination as set forth in claim 1, in which the alternating current motor is a wound rotor type induction motor having the input terminals connected with the electric power source through the controlled rectifiers.
Claim 9
Dependent Claim
51 words
Electric control system for alternating current circuit which comprises in combination as set forth in claim 1, in which the electric power source is an electric battery group whose terminals are connected electrically, through a converter composed of rectifiers, with the synchronous generator driven by a prime mover, in a vehicle.
Claim 10
Dependent Claim
45 words
Electric control system for alternating current circuit which comprises in combination as set forth in claim 1, in which the rotating machine is an electric motor whose input terminals are arranged to be able to be supplied with electric current from the alternating current connection.
Claim 11
Dependent Claim
35 words
Electric control system for alternating current circuit which comprises in combination as set forth in claim 1, in which the electric power source is a generator driven by a prime mover for a ship propulsion.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |