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| Number | Title | Issue Date |
| 8075266 | Method and apparatus for rotating a component of a wind energy plant The invention is related to a method for rotating a component of a wind energy plant by traversing an adjustment device, wherein the adjustment device comprises at least two adjustment drives, each one thereof having at least one electric motor, for traversing the a... | 12/13/2011 |
| 7677869 | Monitoring and data processing equipment for wind turbines and predictive maintenance system for wind power stations A predictive maintenance system for wind parks, the wind park comprising a group of wind turbines (Ai), a communications network (RS), and a supervision and control system (ST). The predictive maintenance system comprises a monitoring and processing equipment (SMP) ... | 03/16/2010 |
| 7347667 | Wind power installation This relates to a wind power installation comprising a pylon (tower) and a rotor arranged on the pylon and having at least one individually adjustable rotor blade. The wind power installation further comprises a device to detect the wind direction, a device to detec... | 03/25/2008 |
| 7331760 | Fan revolution speed control method Actual temperatures of intake air, hydraulic oil, and coolant, to be cooled by a cooling fan, are detected. Target fan revolution speeds are determined by PI control units based on differences between the actual temperatures and target temperatures. The cooling fan ... | 02/19/2008 |
| 7322794 | Method and apparatus for condition-based monitoring of wind turbine components Condition-based monitoring functionality using sensors that monitor wind turbine component movement. A main shaft flange displacement sensor system can be used to provide signals used to perform fatigue assessment of the wind turbine rotor blades as well as drive tr... | 01/29/2008 |
| 7293959 | Wind turbine blade with lift-regulating means Wind turbine blade (10) including adjustable lift-regulating means (12, 13, 15, 17, 19, 21) arranged on or at the surface of the wind turbine blade (10), said lift-regulating means being provided with activating means by means of which they can ... | 11/13/2007 |
| 7276809 | Wind turbine assembly and related method Wind turbine assembly, and related method, is provided that exploits an aerodynamically enhanced wind region of a building in proximity to a parapet of the building. A wind turbine assembly includes a support assembly configured to couple to a building in proximity ... | 10/02/2007 |
| 7275912 | Management system for the operation of a wind turbine 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 ... | 10/02/2007 |
| 7242162 | Apparatus and method for retracting awning An apparatus and method for retracting an awning. A sensor detects an awning acceleration caused by wind impacting the awning, and generates a signal having an amplitude corresponding thereto. When the signal exceeds a certain threshold, the awning is retracted. The... | 07/10/2007 |
| 7218013 | Wind powered generator A wind powered electrical generation assembly having a portable wind powered generator tower for supporting a wind powered generator allowing the wind powered generator to be raised, lowered, and removed from the tower. The wind powered electrical generation assembl... | 05/15/2007 |
| 7204673 | Method of controlling a wind power installation A method for controlling a wind power installation at very high wind speeds, in which there is predetermined a first wind speed at which the rotor blades of the wind power installation are put into a first predetermined setting. In addition, the method includes cont... | 04/17/2007 |
| 7175389 | Methods and apparatus for reducing peak wind turbine loads A method for reducing peak loads of wind turbines in a changing wind environment includes measuring or estimating an instantaneous wind speed and direction at the wind turbine and determining a yaw error of the wind turbine relative to the measured instantaneous win... | 02/13/2007 |
| 7131812 | Sky turbine that is mounted on a city A sky turbine, having impeller blades with a plurality of panels that can telescope inward and outward. The pitch of the panels can be adjusted, and the pitch of each panel on a blade, passing from the innermost panel to the outermost panel, differs from the pitch o... | 11/07/2006 |
| 7101152 | Method for maximizing the energy output of a wind turbine A method is provided for controlling a wind turbine, and a wind turbine is provided with a control device for controlling a wind turbine. A method and a wind turbine are developed so that losses of yield, particularly as a result of variations in the conversion of t... | 09/05/2006 |
| 7086834 | Methods and apparatus for rotor blade ice detection A method for detecting ice on a wind turbine having a rotor and one or more rotor blades each having blade roots includes monitoring meteorological conditions relating to icing conditions and monitoring one or more physical characteristics of the wind turbine in ope... | 08/08/2006 |
| 7071578 | Wind turbine provided with a controller for adjusting active annular plane area and the operating method thereof A wind turbine which varies an active annular plane area by composing such that blades are attached to a cylindrical rotor movable in the radial direction of the rotor, the blades being reciprocated in the radial direction by means of a blade shifting mechanism conn... | 07/04/2006 |
| 7008184 | Control for cooling fan A control for changing direction of air flow through a cooling core in response to an external signal and a purge signal includes a logic circuit and a relay assembly. The logic circuit generates a fan control signal based on the external signal, which causes the fa... | 03/07/2006 |
| 6909948 | Accelerometer configuration The present invention provides a system and method for using the external accelerometer in an aircraft engine configuration as a backup accelerometer, in the event the internally located production accelerometer fails. The sensor location of the external acceleromet... | 06/21/2005 |
| 6857846 | Stackable vertical axis windmill A stackable, vertical axis windmill comprised of a braced external frame that enables stacking of multiple windmill assemblies. Couplings are located on both ends of the vertical rotor shaft to enable stacking and the transmission of power, an internal wind flow cav... | 02/22/2005 |
| 6837681 | Wind power plant with a particle sensor Wind power installations using more modern technology have long been known. Such wind power installations have rotors comprising at least one or more rotor blades. The rotors and accordingly the rotor blades carried thereby of wind power installations are subjected ... | 01/04/2005 |
| 6729844 | Controller for variable pitch fan system An electronic control device for opening and closing valves in a valve assembly that actuates a variable pitch fan system capable of operating in a plurality of fan blade pitch positions including a temperature switch actuated in response to a temperature condition ... | 05/04/2004 |
| 6726439 | Retractable rotor blades for power generating wind and ocean current turbines and means for operating below set rotor torque limits A wind or water flow energy converter comprising a wind or water flow actuated rotor assembly. The rotor comprises a plurality of blades, wherein the blades of are variable in length to provide a variable diameter rotor. The rotor diameter is controlled to fully ext... | 04/27/2004 |
| 6652233 | Control system for a turbo-charged diesel aircraft engine In the control system for a turbo-charged diesel aircraft engine, the engine speed and the fuel injection amount are controlled by a single control lever. However, when the control lever is operated to accelerate the engine, the fuel injection amount imme... | 11/25/2003 |
| 6619918 | Method of controlling the operation of a wind turbine and wind turbine for use in said method The wind turbine (1) comprises a rotor (2) with a number of blades mounted for rotation about a mainly horizontal axis, and the pitch of the blades of the wind turbine is controlled dependence on measured parameters to optimize the operation of the wind t... | 09/16/2003 |
| 6468035 | Method and apparatus for controlling airplane engine An airplane engine control method and apparatus are provided which form an engine control system easy to operate, which set a reciprocating engine of an airplane in such an operating condition in a partial power mode as to maximize the efficiency of the a... | 10/22/2002 |
| 6417640 | Displacement sensors for servo-control actuators A structure comprising firstly a differential sensor of linear displacement comprising a body and a core slidably mounted relative to said body, and secondly a rod of a servo-control actuator in which the core is mounted, said rod terminating in an endpie... | 07/09/2002 |
| 6379115 | Windmill and windmill control method A windmill includes a freely rotatable revolution shaft, a plurality of pairs of pivotal support rods provided at the revolution shaft, and wind receiving blades respectively and rotatably set between the pivotal support rods with wind receiving blade sha... | 04/30/2002 |
| 6361276 | Method and apparatus for removal of moisture from rotor blades Composite rotor blades are constructed from a honeycombed polymer interior core structure having a bonded glass skin covering associated with the top and bottom surfaces thereof. Over time, environmental conditions lead to cracks or fissures in the glass ... | 03/26/2002 |
| 6340289 | Single lever power controller for manned and unmanned aircraft Method and apparatus for controlling an aircraft engine with a single, manually-operable lever includes structure and function for generating a pilot thrust command from the single lever. A processor is coupled to the single lever and (i) receives the gen... | 01/22/2002 |
| 6171055 | Single lever power controller for manned and unmanned aircraft Method and apparatus for controlling an aircraft engine with a single, manually-operable lever includes structure and function for generating a pilot thrust command from the single lever. A processor is coupled to the single lever and (i) receives the gen... | 01/09/2001 |
| 6065930 | Cooling control apparatus A cooling control apparatus controls a plurality of cooling members. The apparatus has a monitor which monitors states of predetermined combinations of the cooling members and a controller which controls the cooling members based on the states monitored b... | 05/23/2000 |
| 6004098 | Propulsion unit for an aircraft and its control procedure An engine plant for aircraft comprising a multicylinder internal combustion engine (1) whose crankshaft drives an adjustable pitch propeller (5), mechanisms for adjusting the engine speed and a common power stick (4) that controls the operation of the eng... | 12/21/1999 |
| 5997250 | Method and apparatus for controlling pitch of an aircraft propeller A propeller pitch control apparatus for an aircraft in which the vector sum of the aircraft forward speed and the propeller rotational tip speed is a selected fraction of the speed of sound, the fraction based on percent power and altitude, to maximize ef... | 12/07/1999 |
| 5209640 | Pitch control apparatus for variable pitch propeller A pitch control apparatus for a variable pitch propeller for drive connection to an aircraft engine, wherein an optimum rotation number of the engine is calculated in relation to a flight speed of the aircraft, an opening degree of the engine throttle and... | 05/11/1993 |
| 5186608 | Hydraulic low pitch switch for propeller pitch change system A low pitch alarm assembly 70 comprises a capped sleeve 72 disposed about the distal end 55 of the rotating and translating fluid delivery tube 50 so as to define a chamber 75 receiving the end 55 of the fluid delivery tube for axial translation therein, ... | 02/16/1993 |
| 4815928 | Blade cooling In one form of the present invention, turbine cooling air is modulated as a function of engine speed, altitude, and blade temperature.... | 03/28/1989 |
| 4403916 | Wind turbines A wind turbine having a generally vertically extending support tower upon which are mounted a front or blade section and a rear or tail section. The front section includes a generally horizontal drive shaft which is connected to a vertical drive shaft in ... | 09/13/1983 |
| 4368692 | Wind turbine A wind turbine to convert wind energy into hydraulic energy by a positive displacement hydraulic pump driven by a wind mill. To the oil outlet of the hydraulic pump, a thermo-sensitive control element is attached, which functions when the oil temperature ... | 01/18/1983 |
| 4355955 | Wind turbine rotor speed control system A wind turbine rotor speed control for ensuring a constant rotational speed within tight tolerances includes a self-sufficient rotor (16) incorporating aerodynamic and mechanical devices to provide the control. There is a fixed turbine blade (26) adapted ... | 10/26/1982 |
| 4297076 | Wind turbine An improved wind turbine in which the tip portions of the blades are variable in pitch and are cyclically varied in pitch to control the yaw of the rotor and to relieve bending moments on the blades and are collectively varied in pitch to relieve bending ... | 10/27/1981 |
