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| Number | Title | Issue Date |
| 8110936 | Power transmission apparatus for wind power generation and wind power generator using the same The present invention provides a power transmission apparatus for wind power generation and a wind power generator using the same. The power transmission apparatus includes a first magnetic member which is provided around a rotating shaft of an impeller, and a secon... | 02/07/2012 |
| 8106525 | Wind energy installation with an autonomous energy supply for a blade adjustment device A wind energy installation is provided with a generator driven by a rotor with adjustable rotor blades to produce electrical energy, with a pitch adjustment device to adjust the blades, which pitch adjustment device includes an emergency circuit with an energy store... | 01/31/2012 |
| 8106526 | Power converter for use with wind generator In one embodiment, the present invention includes a turbine to generate mechanical energy from kinetic energy, a generator coupled to the turbine to receive the mechanical energy and to output multiple isolated supply powers, and multiple power stages each coupled t... | 01/31/2012 |
| 8102067 | Method for the operation of a wind energy plant having a wind velocity measurement device A method for the operation of a wind energy plant, which features a wind velocity measurement device and a device for the detection of a mechanical load, with the following steps: measuring a wind velocity with the wind velocity measurement device, detecting a mecha... | 01/24/2012 |
| 8097971 | Wind turbine generator system In a wind turbine generator system including an AC exciting converter a grid side converter, and a controller configured to control the AC-exciting converter and the grid side converter, the controller operates a short-circuiting circuit when decrease in the grid vo... | 01/17/2012 |
| 8097970 | Method and arrangement in wind power plant A method and an arrangement in connection with a wind power plant, an electric drive of the wind power plant comprising two or more partial converters in parallel, which constitute a frequency converter of the electric drive, and each partial converter comprising a ... | 01/17/2012 |
| 8093740 | Wind power generation system and operation method thereof A wind power generation system wherein procedure for controlling the blade pitch is changed in accordance with the rate of decrease in the amplitude of the grid voltage, and when over current occurs in the grid-side power converter, the grid-side power converter is ... | 01/10/2012 |
| 8093738 | Method for wind turbine yaw control A method for yaw control for a wind turbine comprising a rotor with a rotor blade, the rotor defining a rotor axis and a rotor plane to which the rotor axis is perpendicular, in which the rotor axis is turned to minimise the yaw angle between the ambient wind direct... | 01/10/2012 |
| 8093742 | Method for operating a power dissipating unit in a wind turbine A variable speed wind turbine is provided. The wind turbine includes a generator, a power converter for converting at least a portion of electrical power generated by the generator, a power dissipating unit operatively coupled to the DC link, and a controller. The p... | 01/10/2012 |
| 8093741 | Method and system for providing increased turbine output for doubly fed induction generator A system and method for supplying increased frequency supporting current from a doubly fed induction generator (DFIG) to assist in maintaining grid stability is provided. The output capability of a line side converter associated with the DFIG is enhanced by signific... | 01/10/2012 |
| 8093737 | Method for increasing energy capture in a wind turbine A method for operating a wind turbine. The method includes providing a wind turbine having a variable speed control system, the control system having an initial rotational speed set point. At least two operational parameters are obtained from one or more sensors. An... | 01/10/2012 |
| 8093739 | System and method for fixed frequency power generation A system for modulating a frequency output of a generator coupled to an electric distribution network is described herein. The system includes: a doubly-fed induction generator coupled to a power source selected from at least one of hydropower and fuel combustion, t... | 01/10/2012 |
| 8089172 | Method for determining a rotor position of an electrical generator in a wind turbine A method for determining a rotor position of an electrical generator in a wind turbine is described comprising determining a voltage of the electrical generator, determining a rotor position angle estimate based on the voltage of the electrical generator, determinin... | 01/03/2012 |
| 8089171 | Method for determining a rotor position of an electrical generator in a wind turbine A method for determining a rotor position of an electrical generator in a wind turbine is described comprising determining a voltage of the electrical generator, determining a rotor position angle estimate based on the voltage of the electrical generator, determinin... | 01/03/2012 |
| 8084876 | Use of oriented grain rolling in a wind turbine generator The present invention relates to a wind turbine for generating electric power. The wind turbine includes a generator (105) and a wind turbine rotor (101) for driving the generator (105). The generator includes a generator stator (201) hav... | 12/27/2011 |
| 8084875 | Wind energy installation with an extended rotation speed range A wind energy installation includes a wind rotor, a double-fed asynchronous generator driven by the wind rotor, a converter provided with a first part on the generator side connected to a rotor and a second part on the network side connected to a stator of the gener... | 12/27/2011 |
| 8084874 | Method of maintaining wind turbine components operational and a turbine comprising components suitable for operational maintenace The invention relates to a wind turbine (1) which is connected to an electrical power grid (23) and which uses a magnet generator (6) as the only electrical power generator element both in the normal operation thereof and during periods in which... | 12/27/2011 |
| 8080890 | Method for the operation of a wind turbine and wind turbine using this method A method for the operation of a wind turbine comprising a rotor with at least one rotor blade, a generator and a speed regulator for regulating the rotational speed of a drive train element by adjusting a generator torque and/or a blade pitch angle, comprising the s... | 12/20/2011 |
| 8080891 | Hybrid braking system and method A wind turbine hybrid braking system is presented. The system includes a generator coupled to a main shaft of the wind turbine for generating and transmitting power. A mechanical brake is coupled to the main shaft for applying reaction torque upon braking of the win... | 12/20/2011 |
| 8080889 | Aeolian system comprising power wing profiles and process for producing electric energy An aeolian system is described for converting energy comprising at least one power wing profile (30) which can be driven from the ground immersed in at least one aeolian current (W) and a basic platform (1) for controlling the wing profile (30) ... | 12/20/2011 |
| 8076790 | Wind turbine generator system To shorten a startup interval to reach a synchronizing condition, a phase difference and an amplitude difference between the grid voltage and the stator voltage of one phase of a winding are obtained. The difference in amplitude is decreased prior to or in parallel ... | 12/13/2011 |
| 8076789 | System and method for controlling wind turbine power output A system and method for use in controlling a wind turbine's power output by a wind turbine controller. The method includes determining a predicted wind speed for the wind turbine, determining a current wind turbine power output, and determining a predicted wind turb... | 12/13/2011 |
| 8067845 | Method for the operation of a wind energy plant at sudden voltage changes in the grid A method for the operation of a wind energy plant with a rotor, which transfers a driving moment to a generator via a drive train, wherein the generator provides a pre-settable generator moment acting opposite to the driving moment and is connectable to a grid, char... | 11/29/2011 |
| 8067847 | Variable speed machine assembly and method for making the same A variable speed machine assembly includes an input shaft, a variable speed magnetically geared generator coupled to the input shaft, an electrical machine coupled to the input shaft, and a power converter coupled to the variable speed magnetically geared generator ... | 11/29/2011 |
| 8067846 | Automotive wind powered generator The Wind Powered Generator System is a combination of many common automotive parts. Automotive wind power is a new area and incorporates a roof carrier system that have generators mounted on the crossbar or the roof system. The air velocity or wind turns the fan bla... | 11/29/2011 |
| 8063500 | Maintenance operation method for wind turbine generator and wind turbine generator The present invention provides a maintenance operation method for a wind turbine generator and a wind turbine generator, which can effectively utilize a phase advance capacitor equipped in the wind turbine generator and contribute to the phase factor improvement of ... | 11/22/2011 |
| 8058740 | Wind turbine cable twist prevention A wind turbine having a nacelle, includes a Global Positioning System (“GPS”) sensor for determining a rotational displacement of the nacelle of the wind turbine. ... | 11/15/2011 |
| 8053917 | Variable-speed power generator and method of controlling the same Reactive power is supplied in accordance with a reactive-power supply instruction from a power grid while ensuring a variable-speed range of a wound-rotor induction generator. A variable-speed power generator includes a prime mover that generates motive power by usi... | 11/08/2011 |
| 8053916 | Wind and wave power generation The present invention provides a wind and wave power generation system including a platform (12) and a wind turbine (16) rotatably mounted on a tower (32) and provided with an actuator (34) for changing the yaw angle of the turbine blade ... | 11/08/2011 |
| 8049351 | Turbine energy generating system A power generating turbine includes a rotary shaft having an axis of rotation, a magnet supported by and spaced outwardly from the rotary shaft and a conductive coil. The coil located outwardly from the magnet and surrounds the magnet and the shaft, but is sufficien... | 11/01/2011 |
| 8049352 | Apparatus and method for controlling the reactive power from a cluster of wind turbines connected to a utility grid Methods for increasing a total reactive power capability of a cluster of wind turbines operationally connected to a grid and systems for carrying out the methods. The method includes generating a voltage value representative of a grid voltage level, determining a to... | 11/01/2011 |
| 8044528 | Wind power facility having activation circuit for a speed-limited and voltage-source-protective operation of a pitch-drive series-wound motor at generator torques A wind power facility includes an activation circuit for a speed-limited and voltage-source-protective operation of a pitch-drive series-wound motor at generator torques. The activation circuit can comprise a pitch-drive series-wound motor, in which armature winding... | 10/25/2011 |
| 8044529 | Method of damping tower vibrations of a wind turbine and control system for wind turbines A control system for a wind turbine is provided. A pitch-control unit establishes a pitch-reference signal representing a pitch to be set by the pitch-actuator system. A rotor-speed input receives a signal representing a speed of the rotor. A speed-reference input r... | 10/25/2011 |
| 8044527 | Electric power generation with magnetically geared machine A power generation system includes: a prime mover; an electrical machine coupled to the prime mover and configured for converting mechanical power to electrical power, the electrical machine having a power factor of less than or equal to 0.7; a reactive power supply... | 10/25/2011 |
| 8039980 | Wind turbine generator and method of controlling the same An object of the invention is to reduce stop time of a wind turbine generator caused by icing on a wind turbine blade in the wind turbine generator. The invention provides the wind turbine generator including an ice detecting unit for detecting an amount of icing on... | 10/18/2011 |
| 8039981 | Monitoring of blade frequencies of a wind turbine A method for monitoring blade frequencies of a wind turbine and a monitoring system are provided. An accelerometer is attached to a rotating hub of a wind turbine measuring vibrations of the hub. To extract vibration signals originating from each blade, the vibratio... | 10/18/2011 |
| 8039978 | Renewable energy power system A renewable energy power system comprised of a controller that supervises wind turbines in either a building or vehicle. Vertical or horizontal turbine assemblies with clockwise and counter clockwise generator systems that produce AC & DC power. Batteries and batter... | 10/18/2011 |
| 8039977 | Drive train for an immersion energy production system The invention relates to a power generation plant, driven by a water current, comprising a water turbine; an electric generator; a drive train between the water turbine and the electric... | 10/18/2011 |
| 8039979 | Wind turbine generator system and method of controlling output of the same It is an object to supply, to the utmost extent, reactive power according to a demand of a utility grid side while maintaining the power factor within a predetermined range. The wind turbine generator system includes a main controller 19. The controller 19... | 10/18/2011 |
| 8039982 | Method for operating a wind turbine, coil arrangement for an electric machine, and controller for a wind turbine The disclosure concerns a method for operating a wind turbine having a generator, the generator having for each phase a plurality of coils, wherein the plurality of coils of each phase includes at least one group of coils including at least two coils, the group of c... | 10/18/2011 |
