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| Number | Title | Issue Date |
| 7436084 | Wind energy plant and method for use in erection of a wind energy plant The object of one aspect of the invention is to develop a method by means of which the erection of wind power installations can be effected even more advantageously but in particular also more quickly. A further aim of one aspect of the invention is to provid... | 10/14/2008 |
| 7436085 | 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... | 10/14/2008 |
| 7436086 | Methods and apparatus for advanced wind turbine design A wind turbine system includes a variable blade assembly including adjustable sails and wing shaped masts expanding the wind velocity capture envelope. The blade assembly turns a hydraulic pump, which pressurizes fluid and stores the pressurized fluid in a chamber i... | 10/14/2008 |
| 7432611 | Power control interface between a wind farm and a power transmission system A power control interface between an unstable power source such as a wind farm and a power transmission line employs an electrical energy storage, control system, and electronic compensation module which act together like an “electronic shock absorber” for stori... | 10/07/2008 |
| 7432610 | Wind power installation with ring generator having a stator with groves to receive a stator winding A wind power installation has a (ring) generator which has a stator in which grooves are provided at the inner or outer periphery in mutually spaced relationship to receive a stator winding. In order to provide a stator having a winding, in which the susceptibility ... | 10/07/2008 |
| 7427814 | Wind turbine generators having wind assisted cooling systems and cooling methods A wind generator includes: a nacelle; a hub carried by the nacelle and including at least a pair of wind turbine blades; and an electricity producing generator including a stator and a rotor carried by the nacelle. The rotor is connected to the hub and rotatable in ... | 09/23/2008 |
| 7427173 | Power generation system utilizing wind draft from vehicular traffic A system for electrical power generation by utilizing wind draft force from vehicle traveling on roadways provide two types of wind turbine apparatuses, one type is for road side which sits along the side of a roadway; another type is for road center which is instal... | 09/23/2008 |
| 7425771 | Variable speed wind turbine having an exciter machine and a power converter not connected to the grid A variable speed wind turbine having a doubly fed induction generator (DFIG), includes an exciter machine mechanically coupled to the DFIG and a power converter placed between a rotor of the DFIG and the exciter machine. Thus, the power converter is not directly con... | 09/16/2008 |
| 7425772 | Electric power generating system using ring-shaped generators Electric power generator system using ring-shaped generators and essentially being formed of turbines and generators, and optionally converging-diverging nozzles. The turbines may optionally have an open center, and may be of any type, such as axial turbines, reel-s... | 09/16/2008 |
| 7425774 | Wind turbine provided with a controller for adjusting active annular plane area and the operating method thereof A wind turbine capable of varying 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 c... | 09/16/2008 |
| 7425776 | Multi-cylinder wind powered generator A multiple generator having a vertical post and multiple vertical tubes has the generators positioned vertically one above the other. Each is cylindrical in shape and has two rings separated by connecting fins. The cylinders vary in size with the top being the small... | 09/16/2008 |
| 7425775 | Wind turbine provided with a controller for adjusting active annular plane area and the operating method thereof A wind turbine capable of varying 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 c... | 09/16/2008 |
| 7423352 | Vibration damping method for variable speed wind turbines A vibration damping technique for a wind turbine system is described. The wind turbine system includes a vibration damper, which provides a variable signal to control torque produced by a generator of the wind turbine system. The variable signal is based on generato... | 09/09/2008 |
| 7420289 | Method for predicting a power curve for a wind turbine A method for calculating a high-altitude power curve for a wind turbine is provided, the method including the steps of determining a cp-λ curve for a predetermined blade pitch angle of said wind turbine; calculating a first power curve without power limi... | 09/02/2008 |
| 7420288 | Stall controller and triggering condition control features for a wind turbine Control features for a wind turbine that control the turbine over a range of wind speeds and under triggering conditions with reduced noise, cost, and reliability issues associated with other such controls. Control is accomplished via control electronics, which adju... | 09/02/2008 |
| 7417332 | Method and apparatus of monitoring a machine A monitoring system for a machine is provided. The machine includes at least one movable member including at least one sensor configured to generate at least one speed measurement of the moveable member. The machine also includes at least one processor coupled in el... | 08/26/2008 |
| 7417334 | Wind power generation system, arrangement of permanent magnets, and electrical power-mechanical force converter A wind power generation system 10 comprising a frame, an impeller 12 rotatably supported by the frame, plural permanent magnets 31 aligned at equal intervals from the rotation center, and coils 32 aligned annularly on the frame. The relat... | 08/26/2008 |
| 7411309 | Control system for doubly fed induction generator A controller (28) for a doubly fed induction generator (12,20) adjusts control signals to a rotor side converter (24) and line side converter (22) to adjust rotor current when a voltage transient on a utility grid (10) occurs, so t... | 08/12/2008 |
| 7403854 | Method and apparatus for determining wind farm electricity production A method and apparatus for providing wind farm electricity production values is described. Such an arrangement is useful in providing an indication of potential electricity production values from a test site where there is limited meteorological data available. By a... | 07/22/2008 |
| 7400055 | Wind turbine generator A wind turbine generator includes: a tower; a rotor supported by the tower to rotate around a rotational axis which is not parallel with an axis direction of the tower by wind power; a generator driven by a rotational force of the rotor; a sensor that detects vibrat... | 07/15/2008 |
| 7400054 | Method and assembly for detecting blade status in a wind turbine Transponder technology is incorporated into the blades of a wind turbine to make it possible to transfer data wirelessly from each said blade to the associated tower. By providing a transponder including an RFID device in or on each of the blades and providing a rea... | 07/15/2008 |
| 7400057 | Omni-directional wind turbine An omni directional, vertical discharge wind turbine, consisting of a shroud that captures wind from any direction and directs it to flow vertically through a throat section where an aerofoil multi-bladed rotor is mounted. The rotor shaft is connected to an electric... | 07/15/2008 |
| 7397145 | Automatic braking and locking of a wind turbine A wind turbine rotor is decelerated and locked in a target rotational position in relation to rotation of the rotor about the rotor axis. The rotational position of the rotor in relation to the rotational axis is detected relative to at least one target rotational p... | 07/08/2008 |
| 7397143 | Methods and apparatus for supplying and/or absorbing reactive power A wind turbine includes a rotor having a hub, at least one rotor blade coupled to the hub, and a rotor shaft coupled to said hub for rotation therewith. The wind turbine also includes an electrical generator coupled to the rotor shaft, and a generator-side frequency... | 07/08/2008 |
| 7397142 | Renewable energy electric power generating system A renewable electric power system includes a high temperature superconducting wind turbine using high temperature superconducting yttrium-barium-copper oxide for the rotor and stator windings as well as a superconducting bearing. Power from the turbine is stored in ... | 07/08/2008 |
| 7394166 | Method, apparatus and computer program product for wind turbine start-up and operation without grid power A wind turbine having features for black-starting includes an electric generation system for producing electricity by operation of the wind and comprising an interface for providing the electricity to an electric grid; a control system for controlling components of ... | 07/01/2008 |
| 7391128 | Wind generator system using attractive magnetic forces to reduce the load on the bearings A wind generator system includes a stationary frame, a shaft, mechanical bearings and a stator and a rotor, along with magnetic components configured to reduce or substantially eliminate various loads imposed on the mechanical bearings by the system and by wind. In ... | 06/24/2008 |
| 7385306 | wind power generator including blade arrangement The invention relates to a wind power current generator comprising a bearing, a tubular stator that carries a race of the bearing, a tubular rotor coaxial with the tubular stator that can rotate in relation to the stator, a hub connected to the rotor, and at least t... | 06/10/2008 |
| 7385304 | Wind warning system A wind warning system. The system includes: an alarm module configured to provide a audio signal; a power module configured to provide power to the alarm module; and a trigger module configured to trigger actuation of the alarm module. There is also a wind-speed sen... | 06/10/2008 |
| 7385302 | Wind turbine having variable pitch airfoils A wind turbine, having: a rotatable frame; a plurality of airfoils mounted to the rotatable frame, the wherein the airfoils extend parallel to an axis of rotation of the rotatable frame, and wherein the airfoils are individually pivotable with respect to the rotatab... | 06/10/2008 |
| 7385305 | Wind power generator and bearing structure therefor The invention relates to a wind power current generator comprising a bearing, a tubular stator that carries a race of the bearing, a tubular rotor coaxial with the tubular stator that can rotate in relation to the stator, a hub connected to the rotor, and at least t... | 06/10/2008 |
| 7378820 | Electrical power generation system and method for generating electrical power An electrical power generation system and method for generating electrical power are provided. The electrical power generation system utilizes a master controller for controlling operation of devices coupled to an AC electrical grid and DC electrical grid based on p... | 05/27/2008 |
| 7378751 | Fire protection The present invention concerns a wind power installation comprising a pylon and a pod arranged at the tip of the pylon. The invention further concerns a method of controlling such a wind power installation. In order to prevent a fire from occurring or at least to be... | 05/27/2008 |
| 7372171 | Fire protection The present invention concerns a wind power installation comprising a pylon and a pod arranged at the tip of the pylon. The invention further concerns a method of controlling such a wind power installation. In order to prevent a fire from occurring or at least to be... | 05/13/2008 |
| 7372173 | Wind farm and method for operating same A wind farm with at least two wind turbines (1, 2, 3, 4) connected to a power grid is provided, said wind farm further comprising a control unit (5) connected to said at least two wind turbines (1, 2, 3, 4), and a sensor unit (6) connecte... | 05/13/2008 |
| 7372174 | Power converters The present invention provides a power converter that can be used to interface a generator that provides variable voltage at variable frequency to a supply network operating at nominally fixed voltage and nominally fixed frequency and including features that allow t... | 05/13/2008 |
| 7368828 | Wind energy system A wind energy system comprising a queue of turbines housed in a horizontal air conduit. The inlet end of the conduit opens into a wind collector assembly, which preferably comprises in part downwardly extending earthen slope, such as a hillside or embankment. The wi... | 05/06/2008 |
| 7364399 | Wind power plant of cyclone type and method of obtaining energy from such A wind power plant having a tower open at the top and provided with a side inlet for the wind for generating a cyclone in the tower and a substantially horizontal turbine that has inlets through the base and an outlet to the center of the cyclone in the tower and th... | 04/29/2008 |
| 7365447 | Horizontal axis wind turbine Disclosed is a horizontal axis wind turbine of an downwind type having a rotor disposed downwind of a tower, comprising: a rotor having a hub and a blade; a nacelle to support the rotor rotatably through a main shaft connected to the hub; a cylindrical tower support... | 04/29/2008 |
| 7365446 | Wind power plant having power module mounted on tower foundation and method for use in constructing same The invention relates to a method for constructing a wind energy plant and to a wind energy plant as such. An aim of one aspect of the invention is to provide a method for constructing wind energy plants at lower expenses and more rapidly. According to one aspect, a... | 04/29/2008 |
