Patents Assigned to REpower System AG
  • Publication number: 20080118365
    Abstract: 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: Application
    Filed: November 20, 2007
    Publication date: May 22, 2008
    Applicant: REPOWER SYSTEMS AG
    Inventors: Urs Bendel, Carsten Eusterbarkey, Peter Quell
  • Publication number: 20080111379
    Abstract: 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: Application
    Filed: October 21, 2005
    Publication date: May 15, 2008
    Applicant: REpower Systems AG
    Inventor: Jens Altemark
  • Publication number: 20080103611
    Abstract: 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: Application
    Filed: November 22, 2005
    Publication date: May 1, 2008
    Applicant: REpower Systems AG
    Inventor: Jens Altemark
  • Publication number: 20080088129
    Abstract: 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: Application
    Filed: December 15, 2005
    Publication date: April 17, 2008
    Applicant: REpower Systems AG
    Inventors: Jens Altemark, Holger Becker, Sebastian Friederich
  • Publication number: 20080073912
    Abstract: 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: Application
    Filed: September 30, 2005
    Publication date: March 27, 2008
    Applicant: REpower Systems AG
    Inventors: Jens Fortmann, Heinz-Hermann Letas
  • Publication number: 20070299548
    Abstract: 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: Application
    Filed: November 22, 2005
    Publication date: December 27, 2007
    Applicant: REpower Systems AG
    Inventor: Roland Weitkamp
  • Patent number: 7276808
    Abstract: 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: Grant
    Filed: August 25, 2004
    Date of Patent: October 2, 2007
    Assignee: Repower Systems AG
    Inventors: Roland Weitkamp, Uwe Hinz, Stephan Schäfer
  • Patent number: 7275912
    Abstract: 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: Grant
    Filed: December 20, 2003
    Date of Patent: October 2, 2007
    Assignee: Repower Systems AG
    Inventor: Dirk Steudel
  • Publication number: 20070216166
    Abstract: 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: Application
    Filed: September 20, 2005
    Publication date: September 20, 2007
    Applicant: REPOWER SYSTEMS AG
    Inventor: Matthias Schubert
  • Patent number: 7256509
    Abstract: 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: Grant
    Filed: August 9, 2004
    Date of Patent: August 14, 2007
    Assignee: Repower Systems AG
    Inventors: Karsten Brandt, Jörg Zeumer
  • Patent number: 7256508
    Abstract: 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: Grant
    Filed: June 15, 2004
    Date of Patent: August 14, 2007
    Assignee: Repower Systems AG
    Inventors: Jens Altemark, Björn Matzen, Jörg Zeumer
  • Patent number: 7244097
    Abstract: 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: Grant
    Filed: May 14, 2004
    Date of Patent: July 17, 2007
    Assignee: Repower Systems AG
    Inventors: Uwe Hinz, Ernst Wilhelm Ramundt
  • Publication number: 20070085343
    Abstract: 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: Application
    Filed: September 3, 2004
    Publication date: April 19, 2007
    Applicant: REpower Systems AG
    Inventor: Jens Fortmann
  • Publication number: 20060267348
    Abstract: 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: Application
    Filed: August 25, 2004
    Publication date: November 30, 2006
    Applicant: REPOWER SYSTEMS AG
    Inventors: Roland Weitkamp, Uwe Hinz, Stephan Schafer
  • Publication number: 20060214428
    Abstract: 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: Application
    Filed: June 15, 2004
    Publication date: September 28, 2006
    Applicant: Repower Systems AG
    Inventors: Jens Altemark, Bjorn Matzen, Jorg Zeumer
  • Publication number: 20060204360
    Abstract: 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: Application
    Filed: May 14, 2004
    Publication date: September 14, 2006
    Applicant: REPOWER SYSTEMS AG
    Inventors: Uwe Hinz, Ernst Ramundt
  • Publication number: 20060185279
    Abstract: 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: Application
    Filed: July 6, 2004
    Publication date: August 24, 2006
    Applicant: REPOWER SYSTEMS AG
    Inventor: Carsten Eusterbarkey
  • Publication number: 20060163882
    Abstract: 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: Application
    Filed: August 9, 2004
    Publication date: July 27, 2006
    Applicant: Repower Systems AG
    Inventor: Karsten Brandt
  • Publication number: 20060147307
    Abstract: 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: Application
    Filed: December 20, 2003
    Publication date: July 6, 2006
    Applicant: Repower Systems AG
    Inventor: Dirk Steudel
  • Publication number: 20050254949
    Abstract: 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: Application
    Filed: May 10, 2005
    Publication date: November 17, 2005
    Applicant: REPOWER SYSTEMS AG
    Inventor: Matthias Schubert