Patent application number | Description | Published |
20100119369 | Control Of Rotor During A Stop Process Of A Wind Turbine - A method for controlling a wind turbine rotor during a stop process by pitching the rotor blades fast, e.g. with an angular rate of 10-15°/s to a no-thrust position, after which the rotor blades are pitched to maintain the no-thrust or a thrust against the direction of the pendulum movement of the tower for a while to prevent the aerodynamic thrust from aggravating the pendulum movement of the tower. With this control strategy, the bending moments of the tower root are minimized, leading to avoidance of wind turbine tower failure, to prolongation of the life time for a wind turbine tower and the possibility of erecting wind turbine towers of less reinforcement at the tower root. | 05-13-2010 |
20100196156 | Control Of Rotor During A Stop Process Of A Wind Turbine - A method for controlling a pitch angle of blades of a wind turbine rotor during an emergency stop process of the rotor from an operating state, includes the steps of: (i) continuously determining a measure of an angular acceleration of the rotor, (ii) initiating pitching of the rotor blades and continuing pitching until a time (t | 08-05-2010 |
20130110414 | METHODS AND SYSTEMS FOR DETECTING SENSOR FAULT MODES | 05-02-2013 |
20140015251 | SAFETY SYSTEM FOR A WIND TURBINE - The invention provides a safety system for a wind turbine comprising a tower with a nacelle, and a rotor with blades and a connected drive train. The safety system comprises at least one load sensing system for providing a load signal significant for a load on the tower or rotor, and an electronic system which based on the load signal brings the wind turbine to a safe condition. | 01-16-2014 |
20140334927 | SHUTDOWN CONTROLLER FOR A WIND TURBINE AND A METHOD OF SHUTTING DOWN A WIND TURBINE - The invention provides a shutdown controller for a wind turbine. To improve the estimation of a state of the wind turbine, the controller comprises at least two sensors being adapted to provide sensor data significant for different mechanical states in the wind turbine. The controller can provide an estimated state of the wind turbine based on the sensor data from the at least two sensors and compare the state of the wind turbine with a predefined detection limit to provide a shutdown signal if the estimated state is outside the detection limit. | 11-13-2014 |
20150086360 | METHOD FOR CONTROLLING A WIND TURBINE DURING SHUTDOWN - A method for controlling an individually pitched wind turbine during shutdown is disclosed, the wind turbine comprising at least three wind turbine blades ( | 03-26-2015 |
Patent application number | Description | Published |
20090160189 | Priority System For Communication In A System Of At Least Two Distributed Wind Turbines - The invention relates to a system of at least two distributed wind turbines where the at least two wind turbines communicate via a data communication network, the data communication network communicates monitoring and control data (MCD) to and from the at least two wind turbines (WT), the data communication network communicates power control related data (PCRD) to and from the at least two wind turbines (WT), the power control related data (PCRD) has higher transmission priority than a subset of the monitoring and control data (MCD) and where the transmission priority is defined in relation to a protocol. | 06-25-2009 |
20090204266 | System And Method Of Controlling A Wind Turbine In A Wind Power Plant - The invention relates to a central controller adapted for controlling a number of wind turbines. The wind turbines being controlled and monitored by the central controller via a first monitoring and control network and a second monitoring and control network. The term monitoring and control network is in accordance with an embodiment of the invention understood as a data communication network which communicates at least control data for control of wind turbines, but may also communicate monitoring data, i.e. measure data. A typical example of a control of wind turbines is that the central controller sets the power set-point (the power to be produced) of each wind turbine in the wind power plant. The important control signals may be separated from high-bandwidth requiring monitoring data, such as analysis data in the communication network. | 08-13-2009 |
20090254224 | Multiprotocol Wind Turbine System And Method - A wind turbine includes at least two communication protocol handlers (PH), the protocol handlers (PH) generating and interpreting SCADA (Supervisory Control And Data Acquisition) related data according to an associated communication protocol. The at least two protocol handlers (PH) are associated to different communication protocols. | 10-08-2009 |
20090281675 | System And Method For Monitoring And Control Of Wind Farms - A wind farm monitoring and control system, includes at least one wind farm, at least one intelligent management server connectable to the at least one wind farm via a data communication network, and at least one wind farm configuration tool related to the intelligent management server for establishment of connection(s) to the at least one wind farm. A system for monitoring and control of wind farms is provided. The monitoring and control is performed so that it is possible to monitor and control several wind farms homogeneously. Hereby it is possible to monitor and control different wind farms simultaneously with a uniform output and it is moreover possible to compare data from the wind farms. | 11-12-2009 |