Sign up


Match Document Document Title
8823193 Method and system for limitation of power output variation in variable generation renewable facilities  
A method and system for controlling the output power from a renewable energy installation (10) to a utility grid (56) having a predetermined bound for a variation in output power per unit of time...
8823332 Fault tolerant electric drive system  
A fault tolerant electric drive system includes an alternator, a motor controller and an electric motor, wherein the alternator and motor each have a plurality of corresponding independent phase...
8823200 Drive unit for windmill  
A cutaway portion is provided in a driving force transmission path and serves as a disconnection mechanism for disconnecting the driving force transmission path under the action of a torque of a...
8823190 Wind power converter structure and wind power generation system including the same  
A wind power converter structure and a wind power generation system including the converter structure are provided. The converter structure includes a plurality of generator-side converters...
8823189 Power recovery system using a rankine power cycle incorporating a two-phase liquid-vapor expander with electric generator  
A power recovery system using the Rankine power cycle incorporating a two-phase liquid-vapor expander with an electric generator which further consists of a heat sink, a heat source, a working...
8823198 Offshore wind park  
Wind farm comprising at least one buoyant structure having two corners provided with a wind turbine and a third corner comprising a mooring section, e.g., with a disconnectable mooring turret. The...
8823197 Diagonal solar chimney  
Heated air rises in a long, diagonal chimney up the side of a mountain. The airflow in the chimney turns wind turbines. Air entering the chimney's feeder tubes is heated in stages, where each stage...
8823191 Method and arrangement for controlling a wind turbine using oscillation detection  
A method for controlling a wind turbine is provided. The method includes monitoring an electrical quantity at an output terminal of the wind turbine. The electric quantity has an amplitude and...
8823194 Modular alternative energy unit  
A wind energy apparatus is made up of a plurality of modular wind energy devices or units. Each unit has a housing and at least two turbines mounted on the housing. Each of the turbines has a blade...
8816519 Blade angle adjustment drive for a wind power plant  
A blade angle adjustment drive for a wind power plant having an electrical converter, an electric motor electrically coupled to the converter, and a monitoring unit which monitors the operation of...
8814515 Placing water turbines in water flows  
A floating turbine, including a vertical substantially fixed structure such as a pile or cable, a hydroelectric turbine, a connecting piece between the turbine and the structure that is operative...
8816518 Scalable portable modular power plant  
A scalable portable modular power plant that includes an electrical substation module containing a substation container with a first transformer and a second transformer positioned at the first and...
8816517 Energy storage system using springs  
An energy storage system used to store energy is disclosed. The system uses compression, torsion, extension and/or leaf springs to store energy. Input energy is use to compress the springs through...
8816871 Method for monitoring a static and/or dynamic stability of a wind turbine  
The invention relates to a method for monitoring a static and/or dynamic stability of a wind turbine. The wind turbine has a tower, a nacelle, which is supported by the tower, and a rotor, which is...
8816520 Systems for load reduction in a tower of an idled wind-power unit and methods thereof  
Systems and methods for reducing dynamic loading in an idled wind power unit include sensing at least one parameter indicative of dynamic loading and executing a reduced torque brake mode, which...
8816521 System for stabilizing power output by low-inertia turbine generator  
A system includes a gas turbine engine and a flywheel coupled to the gas turbine engine. The gas turbine engine includes at least one compressor stage, at least one combustor, and at least one...
8816523 Horizontal axis wind generator  
A horizontal axis wind generator comprises a wind turbine with a plurality of blades, which extend between a first portion at the turbine rotational axis and a second end portion, an electric power...
8816522 High speed magnus rotor  
A magnus rotor designed for high speed operation. Aerodynamic drag is reduced by lessening the air density around endplates and half the radial surface of the rotor by installing a circuit of...
8816516 Apparatus for generating energy using mechanical energy and gravitational energy  
An apparatus for generating energy using mechanical energy and gravitational energy comprises a generator, a plurality of free wheels, a first pulling mechanism, a second pulling mechanism, and a...
8807963 Wave powered energy conversion system  
A wave powered energy conversion system operable to convert the motion of ocean waves into a usable form of energy such as electricity. The wave powered energy conversion system includes a storage...
8810053 Method and apparatus for efficient fuel consumption  
A method for efficient fuel consumption comprises recharging batteries or operating a device carrying out a task, with an engine through an electrical connection. The method also includes...
8810347 Method and apparatus for activating an electric machine, and electric machine  
A method of activating an electric machine having a stator, and a rotor which rotates about an axis with respect to the stator; the stator having a plurality of stator segments arranged about the...
8810057 Wind energy systems and methods of use  
A system for generating electrical power from wind energy includes a wind turbine; a generator configured to generate electrical energy in response to the rotation of the wind turbine; an inertial...
8810054 Wave-power unit  
The invention relates to a wave-power unit for the production of electric power. It comprises a floating body (1) arranged for floating on the sea and an electric linear generator (2) having a...
8810050 Magnet powered motor system  
A magnet powered motor system is a motor powered by permanent magnets for inexpensively driving motorized apparatuses. The magnet bars have a triangular shaped cross-section and are adjacently...
8810051 Inverter generator  
In an inverter generator having a winding wound around a generator unit driven by an engine, a converter connected to the winding and adapted to convert an alternating current outputted from the...
8810056 Ocean wave energy converter utilizing dual rotors  
An apparatus for converting the kinetic energy of ocean waves into electricity is disclosed. The apparatus includes a main body member. A generator is located within the main body member. The...
8810052 Control device for rotary electrical machine  
A control device for controlling a rotary electrical machine functioning as a motor and as a power generator, the device being provided with a power conversion circuit serving to function as an...
8810049 Energy collection  
An energy collection system may collect and use the energy generated by an electric field. Collection fibers are suspended from a support wire system supported by poles. The support wire system is...
8810055 Wind turbine control methods and systems  
Improved wind turbine control methods and systems. The invention relates to a method for the operation of a variable speed wind turbine having pitch and torque control means that include additional...
8803355 System for converting wind energy  
The invention consists of a system for converting wind energy (SCEE) into mechanical and then electrical energy. This system (SCEE) is not subject to the theoretical Betz limit (59%). The system...
8803345 Inverter generator  
An inverter generator includes a motor, an electric generator and an ECU generating a pulse at each predetermined rotation angle of the motor. Estimating means estimates an initial electrical angle...
8803347 Control of a wind turbine generator  
A method for controlling a wind turbine generator is disclosed. The method comprises comparing an output power reference value and an actual output power value in a first control block with a first...
8803341 Energy harvesting roadway panel  
A vehicle energy harvesting roadway is provided. The vehicle energy harvesting roadway includes a deformable driving surface that is longitudinally flexible and transversely stiff. The deformable...
8803349 Wind turbine and associated control method  
A method for controlling the position of blades of a two-bladed wind turbine when extreme conditions are detected or forecast for the wind turbine. When extreme conditions are detected or forecast,...
8803354 Modular electric generator for variable speed turbines  
An electric power generation system may be constructed of multiple similar generator modules arranged between a rotor and a stator. The rotor may be coupled to and/or integrated with a turbine that...
8803348 Wind turbine  
A wind turbine is provided. The wind turbine includes at least one generator adapted to generate electric power and a plurality of electrical converter units adapted to convert electric power...
8803350 Method and controller for controlling an electric power production unit, in particular a wind turbine  
A method for controlling an electric power production unit, in particular a wind turbine, connected to a utility grid, includes obtaining information regarding an event at a point in time, wherein...
8805595 Wind turbine arranged for independent operation of its components and related method and computer program  
A wind turbine which is composed of several subunits is provided. Each of the several subunits includes a controller. Each of the controllers is adapted to operate in a cooperative mode and in an...
8803352 Wind turbines and methods for controlling wind turbine loading  
Wind turbines and methods for controlling wind turbine loading are provided. In one embodiment, a method includes the steps of determining a current wind speed. The method further includes...
8803353 Turbine-generator driven by compressed air and magnet motor  
A turbine assembly, which may be part of a turbine generator assembly, includes a turbine flywheel assembly and a magnet motor within a turbine casing. The turbine flywheel assembly comprises a...
8803342 Device and relative method for scavenging energy  
An energy scavenging device includes an electromagnetic transducer adapted to generate a current in response to accelerations impressed thereto. The device also includes a power switching stage...
8803344 Renewable energy storage and conversion system  
The invention consists of a system for generating regulated and controllable AC electricity from renewable sources of energy that are intermittent in their power output. The whole configuration...
8803343 Mobile server system with energy regeneration function  
A mobile server system with an energy regeneration function includes a container, at least one server placed within the container, and at least one power generating mechanism received in the...
8801330 Windmill installation system and method for using same  
Systems and methods for installing a windmill are provided. The system has a hoisting platform and a carrier. The hoisting platform is operatively connectable to at least one platform leg extending...
8803351 Control method for a wind turbine  
The invention relates to a method of controlling a wind turbine having a rotor with pitchable wind turbine blades and a generator for producing power, where a pitch reference value for the wind...
8803346 System and method for generating electricity using grid of wind and water energy capture devices  
A system for maintaining buoyant, energy-capture devices in general relative position in water in the presence of surface waves allows heeling of the energy capture devices while preventing...
8796875 Housing apparatus for use with an electrical system and method of using same  
A housing apparatus for use with an electrical system generally comprises a cover assembly that includes a front end, an aft end, and a cavity defined therebetween to enable the cover assembly to...
8796876 Hydroelectric generator  
This invention is made of a rotational hollow blade (11) turbine, which can be installed in watercourses for power generation. This system may include up to six propellers placed in hexagon shape,...
8796870 Hydro-mechanical electric power generator and method of generating electric power  
An electric power generator having two water tanks, and two chambers movable up and down inside the two water tanks respectively in opposite directions. Each chamber has a top wall having an air...