US3611224A
Expired / Lapsed
US
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Controllable reactive current generator
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1968-08-26
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Granted: 1971-10-05
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Expires: 1988-08-26
Abstract
Abstract Apparatus, containing no moving parts, for generating controllable sinusoidal reactive currents in an n-phase mains. The apparatus includes a primary winding, connected to each phase of the mains, having 2n windings which are associated, in groups of two, with each respective phase of mains. The apparatus also includes either the second one alone or both of the following two auxiliary windings: (1) a delta-connected alternating current winding having 2n windings which are connected serially in groups of two, each group being associated with a respective phase of the mains, and (2) a direct current winding also having 2n windings which are connected serially, in groups of two with each group being associated with a respective phase of the mains. The two windings in each group of the direct current winding are wound in opposition. Each of the windings of the primary winding excites a separate magnetic circuit which contains respective the one of the windings of the auxiliary winding or windings.
Inventors
- 👤 Hans Ludwig Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:17
CPC Classifications
H; H02; H02M; H02M5/00; H02M5/02; H02M5/04; H02M5/10; H02M5/12; H01; H01F; H01F27/00; H01F27/34; H01F27/38; H01F27/385; H01F29/00; H01F29/14; H02J; H02J3/00; H02J3/04; H02J3/18; H02J3/1821; H02J3/1835; Y; Y02; Y02E; Y02E40/00; Y02E40/30
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
185 words
Apparatus for generating controllable sinusoidal reactive currents in an n-phase mains comprising, in combination: a. a priMary winding connected to each phase of said mains, said primary winding having 2n first windings, which are associated, in groups of two, with each respective phase of said mains; and b. auxiliary winding means including either item (1) at least one and (2) or item (2) alone of the following: (1.) a delta-connected alternating current winding for influencing the harmonic content of the reactive current, said alternating current winding having 2n second partial windings, which are connected serially in groups of two, each respective group being associated with a respective phase of said mains, and (2.) a direct current winding, connectable to a source of direct current, said direct current winding having 2n identical second windings which are serially connected in groups of two, each respective group being associated with a respective phase of said mains, the two second windings of each group being wound in opposition, each of said first windings exciting a separate magnetic core circuit which contains the respective winding of said auxiliary winding means.
Claim 2
Dependent Claim
185 words
Apparatus for generating controllable sinusoidal reactive currents in an n-phase mains comprising, in combination: a. a priMary winding connected to each phase of said mains, said primary winding having 2n first windings, which are associated, in groups of two, with each respective phase of said mains; and b. auxiliary winding means including either item (1) at least one and (2) or item (2) alone of the following: (1.) a delta-connected alternating current winding for influencing the harmonic content of the reactive current, said alternating current winding having 2n second partial windings, which are connected serially in groups of two, each respective group being associated with a respective phase of said mains, and (2.) a direct current winding, connectable to a source of direct current, said direct current winding having 2n identical second windings which are serially connected in groups of two, each respective group being associated with a respective phase of said mains, the two second windings of each group being wound in opposition, each of said first windings exciting a separate magnetic core circuit which contains the respective winding of said auxiliary winding means.
Claim 3
Dependent Claim
60 words
The apparatus defined in claim 1, wherein said two first windings in each group of said primary winding are connected in series, wherein said groups of said primary winding are connected in star, and wherein said groups of said direct current winding are connected in parallel, and the parallel circuit, so formed, is connectable to a source of direct current.
Claim 4
Dependent Claim
60 words
The apparatus defined in claim 1, wherein said two first windings in each group of said primary winding are connected in series, wherein said groups of said primary winding are connected in delta, and wherein said groups of said direct current winding are connected in parallel, and the parallel circuit, so formed, is connectable to a source of direct current.
Claim 5
Dependent Claim
60 words
The apparatus defined in claim 1, wherein said two first windings in each group of said primary winding are connected in series, wherein said groups of said primary winding are connected in star, and wherein said groups of said direct current winding are connected in series, and the series circuit, so formed, is connectable to a source of direct current.
Claim 6
Dependent Claim
60 words
The apparatus defined in claim 1, wherein said two first windings in each group of said primary winding are connected in series wherein said groups of said primary winding are connected in delta, and wherein said groups of said direct current winding are connected in series, and the series circuit, so formed, is connectable to a source of direct current.
Claim 7
Dependent Claim
60 words
The apparatus defined in claim 1, wherein said two first windings in each group of said primary winding are connected in parallel, wherein said groups of said primary winding are connected in star, and wherein said groups of said direct current winding are connected in series, and the series circuit, so formed, is connectable to a source of direct current.
Claim 8
Dependent Claim
60 words
The apparatus defined in claim 1, wherein said two first windings in each group of said primary winding are connected in parallel, wherein said groups of said primary winding are connected in delta and wherein said groups of said direct current winding are connected in series and the series circuit, so formed, is connectable to a source of direct current.
Claim 9
Dependent Claim
154 words
The apparatus defined in claim 1, wherein said core, said primary winding, and said direct current winding are so chosen, with respect to each other, that the interlinked permeance of said direct current winding at core saturation, and the additional stray permeance interlinked with said primary winding make the fundamental oscillation of the primary flux, which is determined in value by the voltage of said mains applied to said primary winding, exceed the magnetic saturation limit in the region of the time intervals from approximately omega t1 to approximately omega t2, for a particular desired primary rated current and fundamental oscillation of the magnetic potential and, thus, for A certain bias magnetization and mean value of the magnetic potential, where omega t1 and omega t2 are given by (8u+ 1) pi /4 omega t1 (8u+ 3) pi /4, (8u- 1) pi /4 omega t2 (8u+ 5) pi /4 and u 0, 1, 2, 3....
Claim 10
Dependent Claim
19 words
The apparatus defined in claim 1, wherein the cores associated with said magnetic circuits have at least one airgap.
Claim 11
Dependent Claim
37 words
In combination: at least two apparatuses each as defined in claim 1 and being connected together for equalizing predetermined harmonics, the groups of said primary winding in each of said apparatuses being connected in the same manner.
Claim 12
Dependent Claim
29 words
The apparatus defined in claim 1, further comprising at least one supplementary winding means for distributing energy in the said apparatus whereby said apparatus simultaneously serves as a transformer.
Claim 13
Dependent Claim
22 words
The combination defined in claim 10, wherein said groups of said primary winding in each of said apparatuses are connected in star.
Claim 14
Dependent Claim
22 words
The combination defined in claim 10, wherein said groups of said primary winding in each of said apparatuses are connected in delta.
Claim 15
Dependent Claim
22 words
The combination defined in claim 10, wherein said groups of said primary winding in each of said apparatuses are connected in zigzag.
Claim 16
Dependent Claim
57 words
The apparatus as defined in claim 1 wherein said auxiliary winding means further includes a delta connected alternating current winding for influencing the harmonic content of the reactive current, said alternating current winding have 2n third windings which are serially connected in groups of two, each respective group being associated with a respective phase of said means.
Claim 17
Dependent Claim
61 words
The apparatus as defined in claim 15, wherein said two first windings in each group of said primary winding are connected in series, wherein said groups of said primary winding are connected in star, and wherein said groups of said direct current winding are connected in parallel, and the parallel circuit, so formed, is connectable to a source of direct current.
Claim 18
Dependent Claim
121 words
The apparatus defined in claim 15, wherein said two first windings in each group of said primary winding are connected in series, wherein said groups of said primary winding are connected in star, and wherein said groups of said direct current winding are connected in series, and the series circuit, so formed, is connectable to a source of direct current. 18 The apparatus defined in claim 15, wherein said two first windings in each group of said primary windings are connected in parallel, wherein said groups of said primary winding are connected in star, and wherein said groups of said direct current winding are connected in series, and the series circuit so formed, is connectable to a source of direct current.
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |