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9041234 Double fed induction generator (DFIG) converter and method for improved grid fault ridethrough  
A double fed induction generator (DFIG) converter method are presented in which rotor side current spikes are attenuated using series-connected damping resistance in response to grid fault...
9041238 Variable wing venturi generator  
A variable wing venturi generator and a housing for the same are presented. The wings are variable in that their relative position may be changed and optimized to maximize airflow through a...
9041240 Wind turbine apparatus  
A wind turbine apparatus includes a wind turbine, a support column supporting the wind turbine, and a turning base as a base for the support column, the turning base including a turning gear and a...
9041233 Ice detection method and system for wind turbine generators using sun radiation sensors  
The present invention defines a system and method aiming at measuring the direct solar radiation received by a wind turbine generator in order to detect ice formation. The measured value is...
9035480 Wind turbine and method for operating a wind turbine  
A method is employed for operating a wind turbine. Electrical energy is produced by means of a generator and is fed into an electrical power network. The electrical energy is fed to the secondary...
9035479 Turbine controller for optimizing economic present value of the turbine  
A controller for optimizing the operation of a turbine to maximize the net present value of the revenue it generates over its lifetime. The controller calculates a plurality of net present values...
9030174 Current balance control in converter for doubly fed induction generator wind turbine system  
Systems and methods for reducing current imbalance between parallel bridge circuits used in a power converter of a doubly fed induction generator (DFIG) system are provided. A control system can...
9030035 Quick start-up of wind turbine generators  
A wind farm is provided that is capable of quickly starting up without delay after an electrical grid becomes available after an outage. According to one embodiment, the wind farm comprises one or...
9024459 Wind turbine generator, method, and program thereof  
A rotor having a plurality of wind turbine blades, a generator to be driven by rotation of the rotor, a pitch angle controller for controlling a pitch angle of the wind turbine blades according to...
9024458 Energy storage system utilizing compressed gas  
An energy storage and recovery system employs air compressed utilizing power from an operating wind turbine. This compressed air is stored within one or more chambers of a structure supporting the...
9018781 Method and system for adapting the load on an electrical and/or electronic component in a wind turbine  
A method and system for adjusting the stress on an electrical and/or electronic subassembly in a wind turbine. The method allows determining for the electrical and/or electronic subassembly an...
9018783 Doubly-fed induction generator wind turbine system having solid-state stator switch  
Wind turbine systems and methods are provided. An exemplary system includes a wind driven doubly fed induction generator having a rotor and a stator, the stator providing AC power to a stator bus....
9018784 Wind turbine control method  
A wind turbine control method is described based on the performance of various measurements of the oscillations of the nacelle of the wind turbine for the purpose of carrying out a series of...
9018782 Over-rating control in wind turbines and wind power plants  
Wind turbines of a wind power plant may be selectively over-rated by measuring the difference between the nominal and actual power plant outputs and deriving an over-rating request signal based on...
9018780 Control system and method to improve the electrical energy production of a variable speed wind turbine by alternative regulation  
A control system to improve the production of a variable speed wind turbine comprising control devices for a standard regulation tracking a power vs. generator speed curve that also uses an...
9013053 Multi-type wind turbine  
A multi-type wind turbine is provided such that a plurality of arms are combined with one tower in a radial direction, and a unit generator having a blade is provided at the plurality of arms,...
9014861 Method and system for noise-controlled operation of a wind turbine  
A method for noise-reduced operation a wind is provided. The method includes determining a wind speed during normal operation of the wind turbine and determining a weighted rotor speed setpoint...
9006917 Wind turbine  
The invention concerns a wind turbine comprising a tower (23), on top of the tower a nacelle (29) supported by a vertical drum (24) enclosing an upper room (52), a rotor rotating with a more or...
9006918 Wind turbine  
A wind turbine having an electric machine in turn having a stator, and a rotor which rotates about an axis of rotation with respect to the stator; the rotor having a number of magnetized modules,...
9000603 Wind power plant and method for the controlled shutdown of a wind power plant  
A wind power plant has a main controller and a set of condition parameters that are fed to the main controller. The main controller determines settings for the operation of the wind power plant...
9000605 Lighter-than-air craft for energy-producing turbines  
A wind-based power generating system provides a wind energy converter for converting wind energy into another form of energy using a lighter-than-air craft configured to produce a positive net...
8994200 Power system frequency inertia for power generation system  
A power generation system is provided. The power generation system including a power generation unit operable to supply electrical power to an utility system; a synchronous machine coupled to the...
8994207 System for generating electrical energy from low speed wind energy by means of two systems of drive blades  
The invention relates to a system for generating electrical energy from wind energy, said system being characterized in that the design makes use of small air currents and does not require a large...
8994205 Wind turbine generator rotor mounted upon generator stator  
A wind turbine that includes a rotor, a generator, and a tower is described. The rotor includes a rotor hub and one or more rotor blades. The generator includes a generator stator and a generator...
8994201 Vertical axis wind turbine  
A turbine assembly is provided. The turbine assembly includes a plurality of sails and a generator assembly configured to convert rotation thereabout to power. A brake assembly may be provided....
8994202 Method and system for operating a wind turbine during an overvoltage event  
A method of operating a wind turbine is disclosed, the wind turbine comprising a power generator, a machine-side converter connected to the power generator, a line-side converter connected to a...
8987930 Wind farm and method for operating a wind farm  
A method for operating a wind farm comprising several wind turbines that are connected to an internal grid of the wind farm is disclosed. In the method, during a mains failure the electrical...
8987929 System and method for operating wind farm  
Systems and methods for operating a wind farm are disclosed. The method includes detecting an operating condition of an upwind wind generator, the upwind wind generator located upstream of a...
8981584 Generator torque control methods  
A wind turbine typically includes a generator and a rotating mechanical system having a natural period. The present invention relates to a method of controlling generator torque that minimizes...
8981587 Wind turbine  
A wind turbine that includes a rotor and a generator is described. The rotor includes a rotor hub that is rotatably mounted on a frame and one or more rotor blades. The generator includes a...
8978501 Composite gear part for a gear arrangement and a method of forming a composite gear part  
A composite gear part for a gear arrangement includes a shaft part adapted to be rotationally mounted in the gear arrangement, an inner part made from a first material, and an outer part made from...
8975795 Electric generator  
Electric generator is disclosed having a stator and a rotor. The rotor being rotatable around a center axis and relatively to the stator and the stator includes a number of stator windings...
8975770 Wind power turbine electric generator and wind power turbine equipped with an electric generator  
A wind power turbine electric generator, the electric generator having a tubular first supporting structure extending about an axis of rotation; a second supporting structure extending about the...
8977401 Lifetime optimization of a wind turbine generator by controlling the generator temperature  
A wind turbine and a method for controlling the temperature of a wind turbine generator are disclosed, the wind turbine comprising a generator, generator temperature control means and means for...
8975768 Methods for operating wind turbine system having dynamic brake  
Wind turbine systems and methods for operating wind turbine systems are provided. In one embodiment, a method includes gating on a dynamic brake switch of a dynamic brake in a wind turbine power...
8970057 Method of operating a wind turbine, wind turbine, wind turbine controlling system, and processing system  
According to an embodiment, a method of operating a wind turbine comprising a DC-to-AC voltage converter is provided, the wind turbine being connectable to a grid via the DC-to-AC voltage...
8970058 Wind power generation system, wind power generation control device and wind power generation control method  
For reducing a storage capacity of a storage battery system and an installation cost at a constant-output control type of wind power plant, a wind power generation control device sets as a planned...
8970056 Ocean wave energy system  
An ocean wave energy system for generating power from ocean waves includes a platform supporting an array of hollow columns whose respective lower ends are in fluidic communication with ocean...
8963355 High-performance wind turbine generator that can be driven in horizontal/vertical axis directions with the use of 3D active intelligent turbine blades  
Provided is a 3D active intelligent-type high-performance wind turbine generator. The 3D active intelligent-type high-performance wind turbine generator may be driven in horizontal/vertical axis...
8963362 Power generating windbags and waterbags  
A method of using a bagged power generation system comprising windbags and water-bags for harnessing wind and water power to produce electricity to meet the escalating energy needs of mankind....
8963374 System and method for integrating wind power generation with wave power generation  
A system for integrating a wind power generation with a wave power generation includes a wind power generation device, a wave power generation device and a power integration device. The wind power...
8957536 Wind turbine  
A wind turbine is provided. The wind turbine includes a generator, an output thereof being connectable to a power grid via a power transmission path, the power transmission path comprising a...
8957535 Fault tolerant wind turbine converter  
A wind turbine is arranged to operate in a fully-functional converter mode and a faulty-converter mode. A plurality of converters are arranged to share electric current in the fully-functional...
8957537 Method of operating a variable speed wind turbine  
A method of operating a wind turbine having a rotor with a plurality of blades, and one or more pitch mechanisms for rotating the blades including a sub-nominal zone of operation and a...
8952557 Turbine apparatus and method for energy reclamation and generation of electrical power from forced-air systems  
A forced-air electric generator apparatus includes a housing positioned to receive forced-air flow from a forced-air device. A bladed rotor carried by the housing is in fluid communication with...
8954206 Unmanned aerial vehicle  
The present disclosure relates to an unmanned aerial vehicle (UAV) able to harvest energy from updrafts and a method of enhancing operation of an unmanned aerial vehicle. The unmanned aerial...
8952558 Wind generating device  
The present invention discloses a wind power generating device, comprising a tower column and a first wind generating set. The first wind generating set is installed at a position on the tower...
8946946 Converter device and method for converting electrical power  
A converter device (for power conversion in e.g. a power plant such as a wind turbine is disclosed. An individual controller is provided for each phase of an electrical output power of the...
8946917 Method for controlling power flow within a wind park system, controller, computer program and computer program products  
A method is provided for controlling power flow within a wind park system for power transmission to a main power grid, the wind park system including two or more parallel-connected island wind...
8946916 Controlling a wind turbine to stabilize an electric grid  
A variable speed wind turbine is configured to provide additional electrical power to counteract non-periodic disturbances in an electrical grid. A controller monitors events indicating a need to...