US4406991A
Expired / Lapsed
US
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High power resonance filters
Assignee: ASEA BROWN BOVERI Inc
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Filing: 1982-02-04
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Granted: 1983-09-27
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Expires: 2002-02-04
Abstract
Abstract There is provided by this invention a novel high power resonance filter utilizing a resistive element between two resonant branches disposed to dampen resonant harmonic currents or voltages while maintaining minimal losses at the fundamental frequency.
Inventors
- 👤 Eugene C. Strycula
- 👤 Derek A. Paice
- 👤 Laszlo Gyugyi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:09
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/17; H03H7/1716; H03H7/1733; H03H7/1741; H03H7/1758; H03H7/1775
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
112 words
A high power resonance filter, comprising: (a) a first resonant branch having a first series connected capacitive element and inductive element; (b) a second resonant branch having a second series connected capacitive element and inductive element; (c) a resistive branch connected at a junction of the first series connected capacitive element and inductive element and a junction of the second series connected capacitive element and inductive element between the first and second resonant branches; (d) the first resonant branches and second resonant branches having two common nodes to form a resonant filter network; and (e) the first resonant branches and second resonant branches having a common junction to an a.c. power network.
Claim 2
Dependent Claim
112 words
A high power resonance filter, comprising: (a) a first resonant branch having a first series connected capacitive element and inductive element; (b) a second resonant branch having a second series connected capacitive element and inductive element; (c) a resistive branch connected at a junction of the first series connected capacitive element and inductive element and a junction of the second series connected capacitive element and inductive element between the first and second resonant branches; (d) the first resonant branches and second resonant branches having two common nodes to form a resonant filter network; and (e) the first resonant branches and second resonant branches having a common junction to an a.c. power network.
Claim 3
Dependent Claim
105 words
A high power resonance filter, comprising: (a) a first resonant branch having a series connected capacitive element and two inductive elements; (b) a second resonant branch having a series connected capacitive element and inductive element; (c) a resistive branch connected at a junction of the first two series connected inductive elements and a junction of the second series connected capacitive element and inductive element between the first and second resonant branches; (d) the first and second resonant branches having two common nodes to form a resonant filter network; and (e) the first and second resonant branches having a common junction to an a.c. power system.
Claim 4
Dependent Claim
105 words
A high power resonance filter, comprising: (a) a first resonant branch having a series connected capacitive element and two inductive elements; (b) a second resonant branch having a series connected capacitive element and inductive element; (c) a resistive branch connected at a junction of the first two series connected inductive elements and a junction of the second series connected capacitive element and inductive element between the first and second resonant branches; (d) the first and second resonant branches having two common nodes to form a resonant filter network; and (e) the first and second resonant branches having a common junction to an a.c. power system.
Claim 5
Dependent Claim
105 words
A high power resonance filter, comprising: (a) a first resonant branch having a series connected inductive element and two capacitive elements; (b) a second resonant branch having a series connected inductive element and capacitive element; (c) a resistive branch connected at a junction of the first two series connected capacitive elements and a junction of the second series connected inductive element and capacitive element between the first and second resonant branches; (d) the first and second resonant branches having two common nodes to form a resonant filter network; and (e) the first and second resonant branches having a common junction to an a.c. power system.
Claim 6
Dependent Claim
105 words
A high power resonance filter, comprising: (a) a first resonant branch having a series connected inductive element and two capacitive elements; (b) a second resonant branch having a series connected inductive element and capacitive element; (c) a resistive branch connected at a junction of the first two series connected capacitive elements and a junction of the second series connected inductive element and capacitive element between the first and second resonant branches; (d) the first and second resonant branches having two common nodes to form a resonant filter network; and (e) the first and second resonant branches having a common junction to an a.c. power system.
Claim 7
Dependent Claim
33 words
A high power resonance filter as recited in claim 1, 2 or 3 wherein said resistive branch further comprises a parallel connected capacitive element and inductive element serially connected to the resistive element.
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) | 1986-09-26 | 1987-03-28 | 1987-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-26 | 1991-03-28 | 1991-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-26 | 1995-03-28 | 1995-09-27 | $7700.00 | Window Closed / Lapsed |