Variable-speed transmission for a power-generating plant
AssigneeVoith Turbo GmbH & Co. KG
InventorsMartin Tilscher, Andreas Basteck
Life of this patent
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Abstract
A variable-speed transmission for a power-generating plant; with an input shaft which is connected at least indirectly with a power transducer of a wind-energy generator or hydroelectric generator; with an output shaft which is connected at least indirectly with an electric generator, with the speed of the output shaft being substantially constant; with a superposition gear which is connected at least indirectly with the input shaft and which divides power among a first power branch connected at least indirectly with the output shaft and a second power branch; with the second power branch comprising at least two hydrodynamic circulations, with at least one of the hydrodynamic circulations being at least indirectly in connection with the first power branch.
Claims22
A variable-speed transmission for a power-generating plant, the transmission comprising:
- an input shaft connected to a power transducer of a wind-energy generator or hydro-electric generator;
- an output shaft connected to an electric generator, wherein the speed of the output shaft is substantially constant;
- and
- a superposition gear connected to the input shaft and dividing power among the output shaft and a second power branch;
- wherein the second power branch comprises at least two hydrodynamic circulations, wherein at least one of the hydrodynamic circulations is continuously connected to the output shaft.
A power-generating plant, comprising:
- a power transducer;
- an electric generator;
- a variable-speed transmission, comprising:
- an input shaft connected to a power transducer of a wind-energy generator or hydro-electric generator;
- an output shaft connected to an electric generator, wherein the speed of the output shaft is substantially constant;
- and
- a superposition gear connected to the input shaft and dividing power among the output shaft and a second power branch;
- wherein the second power branch comprises at least two hydrodynamic circulations, wherein at least one of the hydrodynamic circulations is continuously connected to the output shaft.
A variable-speed transmission for a power-generating plant, the transmission comprising:
- an input shaft connected to a power transducer of a wind-energy generator or a hydro-electric generator;
- an output shaft connected to an electric generator, wherein the speed of the output shaft is substantially constant;
- a first superposition gear connected to the input shaft and dividing power among a first power branch connected to the output shaft and a second power branch,
- wherein the second power branch comprises at least two hydrodynamic circulations,
- wherein at least one of the hydrodynamic circulations is connected to the first power branch,
- wherein the hydrodynamic circulations comprise a first hydrodynamic circulation that is a hydrodynamic converter,
- wherein the hydrodynamic circulations comprise a second hydrodynamic circulation that is a hydrodynamic coupling,
- wherein the hydrodynamic converter has a first power flow and the hydrodynamic coupling has a second power flow and a second superposition gear combines the first power flow from the hydrodynamic converter with the second power flow from the hydrodynamic coupling, the first and the second power flows being combined in the second power branch, and
- wherein the hydrodynamic coupling and the second superposition gear have a stationary transmission interposed therebetween.
A variable-speed transmission for a power-generating plant, the transmission comprising:
- an input shaft connected to a power transducer of a wind-energy generator or a hydro-electric generator;
- an output shaft connected to an electric generator, wherein the speed of the output shaft is substantially constant;
- a first superposition gear connected to the input shaft and dividing power among a first power branch connected to the output shaft and a second power branch,
- wherein the second power branch comprises at least two hydrodynamic circulations,
- wherein at least one of the hydrodynamic circulations is connected to the first power branch,
- wherein the hydrodynamic circulations comprise a first hydrodynamic circulation with a first power flow and a second hydrodynamic circulation with a second power flow and a second superposition gear combines the first power flow from the first hydrodynamic circulation with the second power flow from the second hydrodynamic circulation, the first and the second power flows being combined in the second power branch,
- wherein the first and the second hydrodynamic circulations are hydrodynamic converters, and
- wherein the second superposition gear and a turbine wheel of at least one of the hydrodynamic converters has a stationary transmission is interposed therebetween.
A power-generating plant, comprising:
- a power transducer;
- an electric generator;
- a variable-speed transmission comprising:
- an input shaft connected to a power transducer of a wind-energy generator or hydro-electric generator;
- an output shaft connected to an electric generator, wherein the speed of the output shaft is substantially constant;
- and
- a superposition gear connected to the input shaft and dividing power among a first power branch connected to the output shaft, and a second power branch,
- wherein the second power branch comprises at least two hydrodynamic circulations,
- wherein at least one of the hydrodynamic circulations is connected with the first power branch;
- wherein the hydrodynamic circulations comprise a first hydrodynamic circulation that is filled with working medium and a second hydrodynamic circulation that is emptied of working medium below a first speed threshold for an input speed, and
- wherein the first hydrodynamic circulation is emptied of working medium and the second hydrodynamic circulation is filled with working medium above a second speed threshold for the input speed.
Dependencies are inferred from the claim text.