Patents Assigned to REpower System AG
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Publication number: 20080118365Abstract: A bulkhead for a wind turbine is provided. The wind turbine includes a rotor hub and a rotor blade operatively attached to the rotor hub. The rotor blade includes a blade root. The bulkhead includes multiple access openings with closable hatches and is arranged in or on the blade root or in the area between the blade root and the rotor hub.Type: ApplicationFiled: November 20, 2007Publication date: May 22, 2008Applicant: REPOWER SYSTEMS AGInventors: Urs Bendel, Carsten Eusterbarkey, Peter Quell
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Publication number: 20080111379Abstract: The invention relates to a wind turbine comprising a machine housing (12) equipped with a rotor (14), which is mounted to pivot on a sub-structure (10). Wind parameters and an electromechanical quantity are determined by means of measuring devices (21, 22, 23). To enable the machine housing (12) to track the wind, the wind turbine is equipped with a pivoting device (11) comprising a controller (8). The wind turbine is also equipped with a calibration module (2), which is configured to determine an effective mass of the electromechanical quantity using the wind speed. In addition, the turbine comprises an evaluation device (4) comprising a classifier (40), which is used to form a first average value for a first class, for which the wind direction is positive and a second average value for a second class, for which the wind direction is negative. A difference is determined by means of a comparator and a calibration signal is emitted to the controller (8) of the pivoting device (11).Type: ApplicationFiled: October 21, 2005Publication date: May 15, 2008Applicant: REpower Systems AGInventor: Jens Altemark
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Publication number: 20080103611Abstract: A method for optimization of operating parameters of a wind energy installation defines an upper and a lower interval limit value for a parameter to be optimized. The method includes carrying out a cycle with alternate operations of the wind energy installation with the interval limit values, with a data record in each case being produced with a target variable over a variable number of repetitions. The data records relating to the interval limit values are evaluated to form a quality measure, and the interval limit value with the poorer quality measure is identified. Then, at least the interval limit value with the poorer quality measure is replaced by shifting through a step value ? in a direction of another interval limit value. The cycle is then repeated.Type: ApplicationFiled: November 22, 2005Publication date: May 1, 2008Applicant: REpower Systems AGInventor: Jens Altemark
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Publication number: 20080088129Abstract: A wind farm includes a plurality of wind energy installations which generate electrical energy to be output to a power supply system and a wind farm master for controlling the wind energy installations. Each wind energy installation includes a generator which is driven by a rotor, and the wind farm master includes a power control device having a plurality of loops. This plurality of loops includes a fast loop that includes a controller which acts on a first group of the wind energy installations and a slow loop that includes a controller which acts on a second group of the wind energy installations, the fast controller having a substantially higher dynamic than the slow controller.Type: ApplicationFiled: December 15, 2005Publication date: April 17, 2008Applicant: REpower Systems AGInventors: Jens Altemark, Holger Becker, Sebastian Friederich
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Publication number: 20080073912Abstract: A windpark includes at least two wind energy installations, each of which installations comprises a rotor, a generator driven by the rotor and a control device, and which are connected via connecting lines to a main line. The windpark also includes a linking point which connects the main line to a power transmission network, a parkmaster which is configured for power factor control and has communication lines for transmission of control signals to the wind energy installations, and a power-factor control section including a distributed regulator having a higher-level regulator located at the parkmaster which is configured to determine a nominal voltage in order to set a global power coefficient for the power which is emitted to the power transmission network and to emit the global power coefficient as a signal via the communication lines and lower-level regulators at the wind energy installations.Type: ApplicationFiled: September 30, 2005Publication date: March 27, 2008Applicant: REpower Systems AGInventors: Jens Fortmann, Heinz-Hermann Letas
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Publication number: 20070299548Abstract: A method for optimizing the operation of wind energy installations includes operating target and reference wind energy installations to optimize the target installation first using a first set of operating parameters and then using a second set of operating parameters different from the first operating parameters, recording target variables for the target wind energy installation and recording reference results of the reference wind energy installation in each case for both sets of operating parameters, performing an automated evaluation of the target variables by calculation of a quality measure taking account of the reference results, and determining in an automated manner based on the automated evaluation which of the sets of operating parameters has better quality measure. Each wind installation includes comprise a rotor, a generator driven by the rotor to produce electrical energy, and a controller operating the wind energy installation on the basis of a set of operating parameters.Type: ApplicationFiled: November 22, 2005Publication date: December 27, 2007Applicant: REpower Systems AGInventor: Roland Weitkamp
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Patent number: 7276808Abstract: Disclosed is a tower for a wind power station comprising a machine pod disposed on the tower and a rotor mounted on the machine pod so as to be rotatable about an essentially horizontal axis. Said rotor is provided with at least one blade. The tower is composed of a tubular upper section that is connected to a lower section which is embodied as a lattice tower in a transition zone. The lattice tower encompasses at least three corner posts. The upper tower section forms at least one sixth of the entire tower. The cross section of the lower tower section below the transition zone is greater than the cross section of the upper tower section while the transition zone is configured such that the cross section of the lower tower section is adjusted to the cross section of the upper tower section so as to optimize power flux.Type: GrantFiled: August 25, 2004Date of Patent: October 2, 2007Assignee: Repower Systems AGInventors: Roland Weitkamp, Uwe Hinz, Stephan Schäfer
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Patent number: 7275912Abstract: The invention relates to a management system for the operation of a wind turbine, which regulates the power output of the turbine. The wind turbine includes a rotor with at least one rotor blade that is positioned at an adjustable angle to the rotor. The management system regulates the rotor speed within a predefined wind speed range by varying the rotor blade angle in order to set a nominal output and reduces the output in excess of a defined wind-speed-dependent threshold value. The threshold value is a defined rotor blade limiting angle.Type: GrantFiled: December 20, 2003Date of Patent: October 2, 2007Assignee: Repower Systems AGInventor: Dirk Steudel
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Publication number: 20070216166Abstract: Reduction in power output or rotor speed of a wind turbine above a defined limit value, the reduction not being implemented based on the measured wind speed, but on an input value which on one hand is easily detected physically and by control technology and on the other hand is a good indicator of mechanical stresses on the wind turbine. The invention uses the rotor-blade angle as the input value in a manner that starting at the limit value, the reduction in power output or in rotor speed is adjusted as a function of the rotor-blade angle.Type: ApplicationFiled: September 20, 2005Publication date: September 20, 2007Applicant: REPOWER SYSTEMS AGInventor: Matthias Schubert
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Patent number: 7256509Abstract: A wind power plant including a rotor having at least one angle-adjustable rotor blade, a generator that, for generating electrical power, can be directly or indirectly coupled to the rotor and, for supplying the electrical power, can be directly or indirectly coupled to an electrical grid, at least one rotor blade adjusting device for setting an angle of the rotor blade including at least one blade adjusting drive having at least one direct-current motor that can be coupled to the electrical grid via a converter, a control device, coupled to the converter and via which the control and/or regulation of the blade adjusting drive ensues, and a direct current voltage source that ensures a power supply to the blade adjusting drive in the event of grid power failure, whereby the direct current voltage source can be directly coupled to the blade adjusting drive or indirectly to the blade adjusting drive.Type: GrantFiled: August 9, 2004Date of Patent: August 14, 2007Assignee: Repower Systems AGInventors: Karsten Brandt, Jörg Zeumer
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Patent number: 7256508Abstract: The invention relates to a wind-driven power-plant comprising a rotor (100) which is fitted with at least one rotor blade and which is connected directly or indirectly to a generator for power generation, further including an electrical assembly made up of different electrical sub-assemblies including electronic, electrical and/or electromechanical and/or sensor elements and/or electrotechnical safety elements, where, depending on their purposes, all elements/components of one or more electrical sub-assemblies or specific elements of the electrical sub-assembly are combined into one or more function modules that implement at least one function in relation to the generation of electric power, where a parallel module is associated with at least one function module, and the parallel module is able to implement the same or nearly the same function as the function module in normal operation.Type: GrantFiled: June 15, 2004Date of Patent: August 14, 2007Assignee: Repower Systems AGInventors: Jens Altemark, Björn Matzen, Jörg Zeumer
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Patent number: 7244097Abstract: A device for the targeted adjustment of the angle of incidence of a rotor blade (13) which is rotatably mounted, at the foot (14) thereof, on a hub (12) of a rotor (11) of a wind power installation (10). The device includes a gearing, a driving toothed wheel (21, 41) that meshes with the gearing (20, 40), and a lubricating device. The lubricating device, due to a temporary displacement of the driving toothed wheel (21, 41) from an operating position into a lubricating position, can be engaged with a defined point of the gearing (20) or the driving toothed wheel (41), respectively previously engaged with the driving toothed wheel (1) or the gearing (20, 40), so as to transfer lubricant.Type: GrantFiled: May 14, 2004Date of Patent: July 17, 2007Assignee: Repower Systems AGInventors: Uwe Hinz, Ernst Wilhelm Ramundt
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Publication number: 20070085343Abstract: A method for operating at least one wind turbine with a rotor and an electric generator coupled to the rotor for delivering electrical power into an energy distribution system with the aid of a control device ensures that the wind turbine operates within its operating range. The wind turbine is controlled in response to the change of a system operating parameter and for a period of time, in such a manner that a higher power is fed into the system than belongs to the operating range of the steady-state operation. The same conditions also apply to a method for providing control power or primary control power for an electric energy generator and distributor system to which a multiplicity of power stations including wind turbines is connected, and to a wind turbine.Type: ApplicationFiled: September 3, 2004Publication date: April 19, 2007Applicant: REpower Systems AGInventor: Jens Fortmann
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Publication number: 20060267348Abstract: Disclosed is a tower for a wind power station comprising a machine pod disposed on the tower and a rotor mounted on the machine pod so as to be rotatable about an essentially horizontal axis. Said rotor is provided with at least one blade. The tower is composed of a tubular upper section that is connected to a lower section which is embodied as a lattice tower in a transition zone. The lattice tower encompasses at least three corner posts. The upper tower section forms at least one sixth of the entire tower. The cross section of the lower tower section below the transition zone is greater than the cross section of the upper tower section while the transition zone is configured such that the cross section of the lower tower section is adjusted to the cross section of the upper tower section so as to optimize power flux.Type: ApplicationFiled: August 25, 2004Publication date: November 30, 2006Applicant: REPOWER SYSTEMS AGInventors: Roland Weitkamp, Uwe Hinz, Stephan Schafer
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Publication number: 20060214428Abstract: The invention relates to a wind-driven power-plant comprising a rotor (100) which is fitted with at least one rotor blade and which is connected directly or indirectly to a generator for power generation, further including an electrical assembly made up of different electrical sub-assemblies including electronic, electrical and/or electromechanical and/or sensor elements and/or electrotechnical safety elements, where, depending on their purposes, all elements/components of one or more electrical sub-assemblies or specific elements of the electrical sub-assembly are combined into one or more function modules that implement at least one function in relation to the generation of electric power, where a parallel module is associated with at least one function module, and the parallel module is able to implement the same or nearly the same function as the function module in normal operation.Type: ApplicationFiled: June 15, 2004Publication date: September 28, 2006Applicant: Repower Systems AGInventors: Jens Altemark, Bjorn Matzen, Jorg Zeumer
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Publication number: 20060204360Abstract: A device for the targeted adjustment of the angle of incidence of a rotor blade (13) which is rotatably mounted, at the foot (14) thereof, on a hub (12) of a rotor (11) of a wind power installation (10). The device includes a gearing, a driving toothed wheel (21, 41) that meshes with the gearing (20, 40), and a lubricating device. The lubricating device, due to a temporary displacement of the driving toothed wheel (21, 41) from an operating position into a lubricating position, can be engaged with a defined point of the gearing (20) or the driving toothed wheel (41), respectively previously engaged with the driving toothed wheel (1) or the gearing (20, 40), so as to transfer lubricant.Type: ApplicationFiled: May 14, 2004Publication date: September 14, 2006Applicant: REPOWER SYSTEMS AGInventors: Uwe Hinz, Ernst Ramundt
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Publication number: 20060185279Abstract: A construction including at least one pile-type device that is anchored in or on the ground and essentially consists of a longitudinal pile element. The pile-type device also includes at least one reinforcement element, which is configured and located in such a way that a gap is formed between the reinforcement element and the pile element. The gap can be filled at least partially with at least one loose and/or free-flowing material.Type: ApplicationFiled: July 6, 2004Publication date: August 24, 2006Applicant: REPOWER SYSTEMS AGInventor: Carsten Eusterbarkey
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Publication number: 20060163882Abstract: A wind power plant including a rotor having at least one angle-adjustable rotor blade, a generator that, for generating electrical power, can be directly or indirectly coupled to the rotor and, for supplying the electrical power, can be directly or indirectly coupled to an electrical grid, at least one rotor blade adjusting device for setting an angle of the rotor blade including at least one blade adjusting drive having at least one direct-current motor that can be coupled to the electrical grid via a converter, a control device, coupled to the converter and via which the control and/or regulation of the blade adjusting drive ensues, and a direct current voltage source that ensures a power supply to the blade adjusting drive in the event of grid power failure, whereby the direct current voltage source can be directly coupled to the blade adjusting drive or indirectly to the blade adjusting drive.Type: ApplicationFiled: August 9, 2004Publication date: July 27, 2006Applicant: Repower Systems AGInventor: Karsten Brandt
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Publication number: 20060147307Abstract: The invention relates to a management system for the operation of a wind turbine, which regulates the power output of the turbine. The wind turbine includes a rotor with at least one rotor blade that is positioned at an adjustable angle to the rotor. The management system regulates the rotor speed within a predefined wind speed range by varying the rotor blade angle in order to set a nominal output and reduces the output in excess of a defined wind-speed-dependent threshold value. The threshold value is a defined rotor blade limiting angle.Type: ApplicationFiled: December 20, 2003Publication date: July 6, 2006Applicant: Repower Systems AGInventor: Dirk Steudel
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Publication number: 20050254949Abstract: A wind turbine equipped with a tower, a nacelle rotatably mounted on the tower, a rotor rotatable at the nacelle about a rotor axis of rotation and including one rotor hub and at least one rotor blade which is coupled by a blade bearing to the rotor hub while rotatable about a blade adjustment axis. The blade bearing includes an inner ring firmly affixed to the rotor hub and an outer ring that is fitted with a toothing and that is firmly connected to the rotor blade The, rotor blade is rotatable by a blade adjustment drive including a drive motor actuating a drive pinion meshing with the outer toothing of the outer ring.Type: ApplicationFiled: May 10, 2005Publication date: November 17, 2005Applicant: REPOWER SYSTEMS AGInventor: Matthias Schubert