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| Number | Title | Issue Date |
| 7385300 | Method and apparatus for determining actual reactive capability curves A system for generating updated reactive capability curves of a generator operates the genarator at a number of operating load levels and at a number of different power factors to collect data regarding the real and reactive power generated at each of the various op... | 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 |
| 7372172 | Device and method for the generation of electrical energy Arrangement for generating electrical power from a flowing medium, wherein the arrangement includes a plurality of turbine generator units. At least some of the plurality of generator units are arranged at least one of one above another and one beside another. At le... | 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 |
| 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 |
| 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 |
| 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 |
| 7365448 | Wind driven power generator A wind driven generator includes a rotor disposed in a cylindrical duct and supported by a frame for rotation in response to wind flowing through the duct. The rotor includes plural circumferentially spaced paralleled rotor blades supported for rotation about a gene... | 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 |
| 7362004 | Wind turbine device A hybrid blade wind turbine device formed of at least a pair of straight outer airfoil blades, and a pair of inner helical wing blades, as supported for rotation within a safety protective cage structure, which wind turbine can be mounted in the vertical, horizontal... | 04/22/2008 |
| 7360310 | Method for changing removable bearing for a wind turbine generator A wind generator having removable change-out bearings includes a rotor and a stator, locking bolts configured to lock the rotor and stator, a removable bearing sub-assembly having at least one shrunk-on bearing installed, and removable mounting bolts configured to e... | 04/22/2008 |
| 7357622 | Method and installation for extracting energy from a flowing fluid Turbine farm comprising at least a first turbine and at least a second turbine for energy extraction from a flowing fluid, wherein when the second turbine is on the lee side of the first turbine, under nominal power, the axial induction of the first turbine is lower... | 04/15/2008 |
| 7358624 | Wind wheel and electricity generator using same A wind-driven power source comprises a propeller-driven rotor structure and a stator structure carrying clusters of copper-wire wound ferromagnetic cores as voltage generators. The cores are arranged in pairs spaced apart by hard rubber rollers which engage the insi... | 04/15/2008 |
| 7355295 | 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... | 04/08/2008 |
| 7355294 | Method and system for wind turbine blade movement This document discusses, among other things, a wind turbine blade pitch system for moving the blades to control their pitch in the event of a power failure. The system includes at least one backup that has a non-electrical component that can pitch the blades in the ... | 04/08/2008 |
| 7355296 | 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 ... | 04/08/2008 |
| 7352075 | Methods and apparatus for controlling rotational speed of a rotor A method for controlling a rotational speed of a rotor having at least one rotor blade, a rotor shaft, and an electrical generator coupled thereto. The method includes controlling a torque of the rotor shaft by controlling a torque of the electrical generator, alter... | 04/01/2008 |
| 7352076 | Small wind turbine system A small wind-powered electricity generation system, providing regulated AC electric power from wind energy to a power system grid, has a wind turbine that produces less than 10 kW of peak electric power in a permanent magnet generator that produces generator power w... | 04/01/2008 |
| 7352073 | Ocean wave energy converter having an improved generator and ballast control The ocean wave energy converter uniquely includes a generator with a rotating inner rotor surrounded by a counter-rotating outer rotor for generating electricity. A reciprocating drive rod drives the inner rotor on the downstroke of the drive rod and the outer rotor... | 04/01/2008 |
| 7352074 | System for producing hydrogen making use of a stream of water A system for producing hydrogen from water, making use of a stream of water such as a gulf stream or tidal stream, includes a number of submerged modules, each having a turbine that can be driven by the stream of water. The turbine is coupled to a generator for gene... | 04/01/2008 |
| 7347667 | Wind power installation This relates to a wind power installation comprising a pylon (tower) and a rotor arranged on the pylon and having at least one individually adjustable rotor blade. The wind power installation further comprises a device to detect the wind direction, a device to detec... | 03/25/2008 |
| 7348685 | Method and apparatus for supplying fresh water and generating electricity by collected rainwater A method and apparatus includes supplying fresh water and generating electricity from collected rainwater. The method includes providing hollow buoyant members under the reservoir as support. The method also includes providing steel ropes, driving piles into the gro... | 03/25/2008 |
| 7348683 | Rotor for a wind energy turbine A the rotor for a wind energy turbine includes a hub and at least one rotor blade connected to the hub. The rotor also includes comprises at least one sensor for sensing at least one physical value of the rotor, e.g. mechanical stress, and a power supply for supplyi... | 03/25/2008 |
| 7345375 | Wind power generation apparatus Disclosed relates to a wind power generation apparatus and, more particularly, to a multi-direction wind power generation apparatus, which can be easily, solidly and largely manufactured and also repaired readily, for enhancing the efficiency of power generation by ... | 03/18/2008 |
| 7345374 | Decorative windmill with solar panel A decorative windmill having a solar energy system for powering an electrical subsystem is disclosed. The electrical subsystem may include lighting elements for illuminating the windmill and the area around the windmill in a decorative and functional manner. ... | 03/18/2008 |
| 7345373 | System and method for utility and wind turbine control An exemplary embodiment includes a wind turbine system. The wind turbine system includes a wind turbine generator operable to supply wind turbine power to a utility system. A converter is coupled to the wind turbine generator and the utility system. The wind turbine... | 03/18/2008 |
| 7343340 | System and method for distributing transformer capacity among transformer users A method for utilizing transformer capacity allows multiple transformer users to have ordered access to the same backup transformer. When one of the users requires the use of a transformer, the users in line ahead of this user must exercise their rights to use the t... | 03/11/2008 |
| 7342323 | System and method for upwind speed based control of a wind turbine A method for controlling power output of a wind turbine generator in response to an anticipated change in wind speed is provided. The method includes sensing wind speed at a desired distance from the wind turbine generator in a direction of the wind. The method furt... | 03/11/2008 |
| 7342322 | Energy supply apparatus for a location having one or more consumers with said location being remote from power mains A power supply apparatus in the form of a compact system is provided in order to eliminate the disadvantages associated with known photovoltaic power supply apparatus for locations that are remote from power mains. To this end, an additional combustion generator ( | 03/11/2008 |
| 7337726 | Wind farm An offshore wind farm comprises a plurality of wind turbines. In order to provide such a wind farm with transport between separate wind turbines that can be effected more safely and with less dependence on weather, cable connection is provided between the wind turbi... | 03/04/2008 |
| 7339283 | Electronic load regulator An electronic load regulation system for a locomotive may comprise a solid state replacement for existing electro-mechanical load regulators that are used to adjust the excitation current in the field windings of the locomotive's generator. A pressure sensor may inc... | 03/04/2008 |
| 7339355 | Generator with utility fault ride-through capability A wind powered turbine with low voltage ride-through capability. An inverter is connected to the output of a turbine generator. The generator output is conditioned by the inverter resulting in an output voltage and current at a frequency and phase angle appropriate ... | 03/04/2008 |
| 7339286 | Portable wind power generator A portable wind power generator capable of being stored in a folded manner includes a storage case and a power-generating system. The power-generating system is disposed in the storage case. The storage case includes a case body and a plurality of covers. The case b... | 03/04/2008 |
| 7332884 | Electric motor control strategies An electric start system (20) includes a controller (40) that controls operation of a motor (22) used to start a device such as a gas turbine engine (24). In one example, the controller (40) determines when an acceleration rate of ... | 02/19/2008 |
| 7332894 | Power generation apparatus using AC energization synchronous generator and method of controlling the same In a power generation apparatus equipped with an AC energization synchronous generator, when energization of a secondary winding starts to conduct connecting to the network of the AC energization synchronous generator to a network voltage, energization of the second... | 02/19/2008 |
| 7332827 | Method for controlling a power-grid connected wind turbine generator during grid faults and apparatus for implementing said method The present invention relates to a method and an apparatus for controlling a power-grid connected wind turbine generator during grid faults. During grid faults, the stator windings of the wind turbine generator are disconnected from the power grid and impedances for... | 02/19/2008 |
| 7329963 | Hydro-electrical generator An hydroelectric generator for generating an electrical current from moving water comprises two endless belts arranged parallel to each other with adjacent runs running in the same direction. A plurality of paddles are mounted on one of the belts and arranged to eng... | 02/12/2008 |
| 7329965 | Aerodynamic-hybrid vertical-axis wind turbine An aerodynamic-hybrid, vertical-axis wind turbine which includes a rotor airfoil and stator blade combination which maximizes energy production by increasing wind velocity and pressure while eliminating back pressure and improving the laminar flow of wind both aroun... | 02/12/2008 |
