US6774608B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine driven power generating device having DC voltage intermediate circuit and star connected filter capacitors
Assignee: ABB Schweiz AG
•
Filing: 2002-09-19
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Granted: 2004-08-10
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Expires: 2022-09-19
Abstract
Abstract A power generating device is specified, which comprises a generator ( 1 ), which is coupled to a drive unit, in particular to a turbine, and is connected via a rectifier ( 2 ) to a DC voltage intermediate circuit ( 3 ), an inverter ( 4 ), which is connected to the DC voltage intermediate circuit ( 3 ) and, on the AC voltage output side, has n phases with n AC voltage connections ( 5 ), and a filter arrangement ( 6 ), which is connected to the AC voltage connections ( 5 ). Furthermore, the filter arrangement ( 6 ) has a first filter inductance ( 7 ) and a second filter inductance ( 8 ), which is connected in series with the first, for each AC voltage connection ( 5 ), with a filter capacitor ( 9 ) being connected to the junction point of the first filter inductance ( 7 ) and the second filter inductance ( 8 ), and the filter capacitors ( 9 ) being connected to one another in a star circuit at a star point ( 10 ).
Inventors
- 👤 Bruno Hofstetter
- 👤 Ingo Golle
- 👤 Beat Ronner
- 👤 Martin Mullis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:24
CPC Classifications
H; H02; H02M; H02M5/00; H02M5/40; H02M5/42; H02M5/44; H02M5/453; H02M5/458; H02M5/4585; H02J; H02J3/00; H02J3/01; H02J7/00; H02J7/34; H02J7/345; H02M1/00; H02M1/12; H02M1/126; H02P; H02P9/00; H02P9/10; H02P9/105; Y; Y02; Y02E; Y02E40/00; Y02E40/40
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
184 words
A power generating device comprising: a generator, which is coupled to a drive unit, and is connected via a rectifier to a DC voltage intermediate circuit, an inverter, which is connected to the DC voltage intermediate circuit and, on the AC voltage output side, has n phases with n AC voltage connections, and a filter arrangement, which is connected to the AC voltage connections, wherein the filter arrangement has a first filter inductance and a second filter inductance, which is connected in series with the first, for each AC voltage connection, and a filter capacitor is connected to the junction point of the first filter inductance and the second filter inductance, wherein the filter capacitors are connected to one another in a star circuit at a star point, wherein the star point is connected to ground potential, wherein a balancing apparatus is provided, which is connected to the DC voltage intermediate circuit and is formed from two series-connected controllable power semiconductor switches, each having a back-to-back parallel-connected diode, and wherein the junction point of the power semiconductor switches is connected to the star point.
Claim 2
Dependent Claim
184 words
A power generating device comprising: a generator, which is coupled to a drive unit, and is connected via a rectifier to a DC voltage intermediate circuit, an inverter, which is connected to the DC voltage intermediate circuit and, on the AC voltage output side, has n phases with n AC voltage connections, and a filter arrangement, which is connected to the AC voltage connections, wherein the filter arrangement has a first filter inductance and a second filter inductance, which is connected in series with the first, for each AC voltage connection, and a filter capacitor is connected to the junction point of the first filter inductance and the second filter inductance, wherein the filter capacitors are connected to one another in a star circuit at a star point, wherein the star point is connected to ground potential, wherein a balancing apparatus is provided, which is connected to the DC voltage intermediate circuit and is formed from two series-connected controllable power semiconductor switches, each having a back-to-back parallel-connected diode, and wherein the junction point of the power semiconductor switches is connected to the star point.
Claim 3
Dependent Claim
22 words
The power generating device as claimed in claim 1 , wherein the rectifier is in the form of a controllable three-phase rectifier.
Claim 4
Dependent Claim
23 words
The power generating device as claimed in claim 1 , wherein the star point is connected to ground potential via a grounding capacitor.
Claim 5
Dependent Claim
29 words
The power generating device as claimed in claim 1 , wherein the junction point of the power semiconductor switches is connected to the star point via a smoothing inductance.
Claim 6
Dependent Claim
23 words
The power generating device as claimed in claim 1 , wherein the second filter inductance is connected to a first network isolating switch.
Claim 7
Dependent Claim
47 words
The power generating device as claimed in claim 1 , wherein a charging device is provided, which is connected to the second filter inductance, with the charging device in each case having an isolating switch with a series-connected resistance for each connection for the second filter inductances.
Claim 8
Dependent Claim
22 words
The power generating device as claimed in claim 6 , wherein the star point is connected to a second network isolating switch.
Claim 9
Dependent Claim
48 words
The power generating device as claimed in claim 1 , wherein at least one further rectifier is connected to the DC voltage intermediate circuit, with the at least one further rectifier being connected to a further generator, and the further generator being coupled to a further drive unit.
Claim 10
Dependent Claim
15 words
The power generating device of claim 1 , wherein the drive unit is a turbine.
Claim 11
Dependent Claim
20 words
The power generating device of claim 8 , wherein the further drive unit is in the form of a turbine.
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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) | 2007-08-10 | 2008-02-09 | 2008-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-08-10 | 2012-02-09 | 2012-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-08-10 | 2016-02-09 | 2016-08-10 | $7700.00 | Window Closed / Lapsed |