US5907234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thyristor-switched capacitor bank
Assignee: Siemens AG
•
Filing: 1998-02-04
•
Granted: 1999-05-25
•
Expires: 2018-02-04
Abstract
Abstract A thyristor-controlled capacitor bank includes a thyristor switch and a capacitor bank. The capacitor bank is split into at least two series-connected capacitor groups. A series circuit including a thyristor switch and an inductor coil is connected in parallel with the capacitor group which is remote from a capacitor group at a mains power supply connection. A thyristor-switched capacitor bank is thus obtained which has a thyristor switch that therefore only needs to be constructed for a fraction of the mains power supply voltage itself, which is a major advantage for economic reasons.
Inventors
- 👤 Kadry Sadek
- 👤 Marcos-Antonio Cavalcanti Pereira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:57
CPC Classifications
H; H02; H02J; H02J3/00; H02J3/18; H02J3/1821; H02J3/1835; H02J3/1864; Y; Y02; Y02E; Y02E40/00; Y02E40/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
69 words
A thyristor-switched capacitor bank, comprising: a capacitor bank divided into at least two series-connected capacitor groups, one of said capacitor groups disposed at a mains power supply connection and at least one other of said capacitor groups remote from said one capacitor group; and a series circuit including a thyristor switch and an inductor coil, said series circuit connected in parallel with said at least one other capacitor group.
Claim 2
Dependent Claim
69 words
A thyristor-switched capacitor bank, comprising: a capacitor bank divided into at least two series-connected capacitor groups, one of said capacitor groups disposed at a mains power supply connection and at least one other of said capacitor groups remote from said one capacitor group; and a series circuit including a thyristor switch and an inductor coil, said series circuit connected in parallel with said at least one other capacitor group.
Claim 3
Dependent Claim
32 words
The thyristor-switched capacitor bank according to claim 1, wherein said one capacitor group is directly associated with the mains power supply connection and has the greatest capacitance value of said capacitor groups.
Claim 4
Dependent Claim
33 words
The thyristor-switched capacitor bank according to claim 1, wherein said at least one other capacitor group has capacitance values selected as a function of a permissible off-state voltage of said associated thyristor switch.
Claim 5
Dependent Claim
20 words
The thyristor-switched capacitor bank according to claim 1, wherein said at least one other capacitor group is two capacitor groups.
Claim 6
Dependent Claim
15 words
The thyristor-switched capacitor bank according to claim 1, wherein said thyristor switch includes reverse-parallel thyristors.
References Cited (Backward Citations)
DE2456895C3
Cited
DE2804481C2
Cited
EP0116275A2
Cited
US4571535A
Cited
US4638238A
Cited
US4719402A
Cited
US5093630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-05-24 | 2002-11-23 | 2003-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-05-24 | 2006-11-23 | 2007-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-05-24 | 2010-11-23 | 2011-05-25 | $7700.00 | Window Closed / Lapsed |