US6930471B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid synchronous/induction generator power plant
Assignee: General Electric Co
•
Filing: 2003-10-06
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Granted: 2005-08-16
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Expires: 2023-10-06
Abstract
Abstract A power generation plant comprising a power generating unit that includes at least one first generator, such as an induction generator, coupled to at least one synchronous generator having a rotor with a superconducting (SC) coil. The induction generator and the SC synchronous generator are coupled so that the SC synchronous generator supplies the induction generator with reactive power. Sufficient reactive power is preferably generated by the SC synchronous generator to meet the demand of the induction generator for VARs, as well as permit the induction generator to have a relatively large airgap.
Inventors
- 👤 Kiruba Sivasubramaniam
- 👤 Yu Wang
- 👤 Konrad Weeber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:13
CPC Classifications
H; H02; H02J; H02J3/00; H02J3/18; H02J3/1885; H02J3/38; H02P; H02P9/00; H02P9/10; H02P9/102; Y; Y02; Y02E; Y02E40/00; Y02E40/30; Y02E40/60
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
50 words
A power generation plant comprising a power generating unit comprising at least one first generator coupled to at least one synchronous generator having a rotor with a superconducting coil, the first generator and the synchronous generator being coupled so that the synchronous generator supplies the first generator with reactive power.
Claim 2
Dependent Claim
50 words
A power generation plant comprising a power generating unit comprising at least one first generator coupled to at least one synchronous generator having a rotor with a superconducting coil, the first generator and the synchronous generator being coupled so that the synchronous generator supplies the first generator with reactive power.
Claim 3
Dependent Claim
30 words
A power generation plant according to claim 1 , wherein the synchronous generator supplies the first generator with sufficient reactive power to meet the VAR requirements of the first generator.
Claim 4
Dependent Claim
17 words
A power generation plant according to claim 1 , wherein the first generator is an induction generator.
Claim 5
Dependent Claim
18 words
A power generation plant according to claim 3 , wherein the induction generator is operable at non-constant speeds.
Claim 6
Dependent Claim
29 words
A power generation plant according to claim 3 , wherein the unit comprises means for operating the induction generator at variable speeds to support grid stability during system transients.
Claim 7
Dependent Claim
28 words
A power generation plant according to claim 3 , wherein the unit comprises means for operating the induction generator at variable speeds in response to short-term system overloads.
Claim 8
Dependent Claim
26 words
A power generation plant according to claim 1 , wherein the power generating unit comprises at least two first generators coupled to a single synchronous generator.
Claim 9
Dependent Claim
24 words
A power generation plant according to claim 1 , wherein the hybrid power generation plant comprises more than one of the power generating unit.
Claim 10
Dependent Claim
17 words
A power generation plant according to claim 1 , wherein the first generator produces three-phase alternating current.
Claim 11
Dependent Claim
103 words
A power generation plant connected to a distribution network, the power generation plant comprising a power generating unit that comprises turbines, at least two induction generators, and at least one synchronous generator, each of the turbines driving a rotor of a corresponding one of the synchronous and induction generators, the rotor of the synchronous generator comprising a high-temperature superconducting coil at a temperature sufficient to achieve a superconducting state therein, the induction generators and the synchronous generator being coupled so that the synchronous generator supplies each of the induction generators with sufficient reactive power to meet the VAR requirements of the induction generators.
Claim 12
Dependent Claim
103 words
A power generation plant connected to a distribution network, the power generation plant comprising a power generating unit that comprises turbines, at least two induction generators, and at least one synchronous generator, each of the turbines driving a rotor of a corresponding one of the synchronous and induction generators, the rotor of the synchronous generator comprising a high-temperature superconducting coil at a temperature sufficient to achieve a superconducting state therein, the induction generators and the synchronous generator being coupled so that the synchronous generator supplies each of the induction generators with sufficient reactive power to meet the VAR requirements of the induction generators.
Claim 13
Dependent Claim
20 words
A power generation plant according to claim 10 , wherein each of the induction generators are operable at non-constant speeds.
Claim 14
Dependent Claim
29 words
A power generation plant according to claim 10 , wherein the unit comprises means for operating the induction generators at variable speeds to support grid stability during system transients.
Claim 15
Dependent Claim
28 words
A power generation plant according to claim 10 , wherein the unit comprises means for operating the induction generators at variable speeds in response to short-term system overloads.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-08-15 | 2009-02-14 | 2009-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-08-15 | 2013-02-14 | 2013-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-08-15 | 2017-02-14 | 2017-08-16 | $7700.00 | Window Closed / Lapsed |