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| Number | Title | Issue Date |
| 8183706 | Method for operating a power dissipating unit in a wind turbine A variable speed wind turbine is provided. The wind turbine comprises a generator, a power converter for converting at least a portion of electrical power generated by the generator wherein the power converter comprises a generator side converter, a grid side conver... | 05/22/2012 |
| 8183704 | Connection and disconnection sequence for 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... | 05/22/2012 |
| 8178992 | Axial flux alternator with air gap maintaining arrangement Axial flux alternator for a wind turbine arrangement includes at least one magnetic disk including magnets and at least one coil disk including electromagnetic assemblies. One or both disks are mounted to wind turbines such that adjacent disks rotate in opposite dir... | 05/15/2012 |
| 8174140 | Multipurpose engine having electrical wiring connected inside connector box A multipurpose engine has a wiring structure between the generator and electrical components. A connector box is provided in a gap defined directly between the generator and the fuel tank. A plurality of electrical wirings is interconnected inside the connector box.... | 05/08/2012 |
| 8148841 | Modular wind turbine system A windmill includes a rotor having an outer blade edge of a stacked blade configuration windmill which generates electricity through outside rings which include wire windings. The outer blade edges are configured in a C-shape to enclose as much as ¾ of the outside ... | 04/03/2012 |
| 8143732 | Stationary genset power system having turbo-compounding A stationary genset power may have a combustion engine configured to produce a mechanical output, and a main generator driven by the combustion engine to convert a majority portion of the mechanical output to electricity directed to an external load. The stationary ... | 03/27/2012 |
| 8125093 | Electromagnetic engine A converter converts mechanical energy of a piston to and from electrical energy during each piston cycle. ... | 02/28/2012 |
| 8120198 | Wind power turbine A wind power turbine has a fixed assembly; a mobile assembly fitted to the fixed assembly to rotate about an axis with respect to the fixed assembly; and a locking device for making the mobile assembly and the fixed assembly integral with each other; the locking dev... | 02/21/2012 |
| 8120195 | Wave energy converter Systems are described for obtaining energy, especially electrical energy, from sea waves. An elongated elastic tube device (12) floats at the sea surface (20) (or at a shallow depth under it) and extends at least partially parallel to the direction of ... | 02/21/2012 |
| 8102072 | Aerodynamic vibration power-generation device An aerodynamic vibration power-generation device is provided, including at least a brace, and at least a blade. The blade is attached to the brace at least with one side. The blade is an aerodynamic vibration element, with at least an embedded piezoelectric transduc... | 01/24/2012 |
| 8102066 | Inverter generator In an inverter generator, having a generator unit driven by an internal combustion engine whose throttle valve is moved by an actuator and generates alternating current, and an inverter that converts converted direct current to alternating current with switching ele... | 01/24/2012 |
| 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 |
| 8080896 | System and method for converting wind into mechanical energy A system for converting an airflow into mechanical or electrical energy, which includes a tubular member having a first opening and a second opening, a leading edge member positioned adjacent to one of the first and second openings, and a raised edge along each long... | 12/20/2011 |
| 8067849 | Wave energy converter with internal mass on spring oscillator A wave energy converter (WEC) system includes a shell containing an internal oscillator comprised of a reaction mass suspended from the shell by an elastic spring in parallel with a constant force spring. The constant force spring provides a relatively constant forc... | 11/29/2011 |
| 8063501 | Gas turbine bleed energy recovery via counter rotating generator A gas turbine engine includes a main compressor section for compressing air, a main combustor section positioned downstream of the main compressor section, a main turbine section positioned downstream of the main combustor section, and a spool extending from the mai... | 11/22/2011 |
| 8058742 | Thermal management system for wind turbine A wind turbine includes a wind turbine tower and a power electronic control system located within the wind turbine tower. The power electronic control system includes heat generating components. The heat generating components are directly mounted to the inner surfac... | 11/15/2011 |
| 8053915 | On-vehicle rotary electric machine operating on two modes of rectification A rotary electric machine for a vehicle includes a rotor, a stator and a rectifying device for current AC/DC conversion. The machine operates as a motor and a generator. The machine includes a multi-phase windings, switching elements forming a rectifying device, and... | 11/08/2011 |
| 8049346 | Reliability and serviceability enhanced engine driven electrical generating system A engine driven electrical generating system and its support cradle for use in confined space enclosures with a triple redundant troubleshooting system, a triple redundant troubleshooting data transmission system, and a double redundant electric fan cooling system w... | 11/01/2011 |
| 8049354 | Flow power converter apparatus employing a flow-controlled duct to capture flow energy A wave power converter employing a flow-controlled duct for capturing and converting useful wave surge energy to electric power over a relatively broad range of surf or river flow conditions. The power converter includes an inclined ramp with several openings for re... | 11/01/2011 |
| 8039985 | Wind turbine A wind turbine has a housing, multiple cross-flow fan assemblies, a turbine generator assembly, an air guide and multiple wind-driven fans. The housing has a chamber having top and bottom openings. The cross-flow fan assemblies are mounted on the housing and each ha... | 10/18/2011 |
| 8037852 | Free piston electromagnetic engine Methods of operating an internal combustion engine are disclosed that may include a first piston slidably disposed in a first cylinder having a first and a second closed end, and a first converter operable with the first cylinder. The first converter may be configur... | 10/18/2011 |
| 8035246 | Torque limiting coupling for wind turbine A direct-drive power train of a wind power plant is protected from over-torque by a torque limiting device. The power train includes a turbine rotor including a hub and blades supported on the hub, and a generator including a stator and a generator rotor rotatably d... | 10/11/2011 |
| 8030787 | Mbackup flywheel power supply A flywheel system includes a synchronous reluctance and a permanent magnet generator. ... | 10/04/2011 |
| 8026626 | Axial flux alternator with air gap maintaining arrangement Axial flux alternator for a wind turbine arrangement includes at least one magnetic disk including magnets and at least one coil disk including electromagnetic assemblies. One or both disks are mounted to wind turbines such that adjacent disks rotate in opposite dir... | 09/27/2011 |
| 8018081 | Wind turbine and method of manufacture A variable voltage and frequency output wind turbine. Variations of the wind turbine include use of a slotless alternator to reduce alternator noise, a high power AC output to facilitate transmission of the output over extended distances, AC to DC converters and DC ... | 09/13/2011 |
| 8007231 | Flowing water energy device This device transforms the energy of flowing water into useable energy and includes one or more flow diversion structures, one or more paddlewheels, and one or more generators. A gearbox or transmission may be added to increase the rotational speed of the generators... | 08/30/2011 |
| 8004103 | Power generation The present disclosure includes apparatus, methods, and systems for power generation. One power generator embodiment includes a shaft; a buoyant assembly slidably coupled to the shaft upon which the buoyant assembly rises and falls, the buoyant assembly configured t... | 08/23/2011 |
| 8004107 | Direct drive generator and wind turbine A direct drive generator for a wind turbine is provided. The direct drive generator includes a stator arrangement and a rotor arrangement. The stator arrangement and/or the rotor arrangement include an at least partly flexible front and/or rear endplate. The endplat... | 08/23/2011 |
| 7999403 | System and method for locomotive engine cranking In a method of operating a starting system coupled to a crankshaft of a vehicle engine, during engine starting, torque supplied by the starting system to the engine is continuously adjusted to provide more than two levels based on operating conditions of the vehicle... | 08/16/2011 |
| 7994651 | Apparatus for converting the energy of waves on a body of water An apparatus converting the energy of waves on an open body of water includes a submerged articulated frame or frames formed of rods arranged largely in a parallelogram. The frame or frames are arranged so that as a wave passes the frames, the frames are distorted b... | 08/09/2011 |
| 7988413 | Vertical axis wind turbine A vertical axis wind turbine includes an upstanding support structure, a plurality of generators disposed on the support structure, a central shaft in rotatable communication with the generators and positioned along a central axis of the vertical-axis wind turbine, ... | 08/02/2011 |
| 7986051 | Energy converters utilizing fluid-induced oscillations An energy converter for inducing membrane vibrations when subject to a fluid flow and converting the kinetic energy embedded in the fluid flow into another form of energy, such as electricity. The energy converter includes a supporting structure and multiple generat... | 07/26/2011 |
| 7980823 | Wind turbine generator rotor, wind turbine generator and wind turbine generator system Provided is a wind power generating apparatus adopts a rotor blade including a frame body unit composed of a frame body having an opening and a plurality of support frames extending from the frame body, and a sail portion adhered to cover the frame body unit. The fr... | 07/19/2011 |
| 7982324 | Power generation control device A power generation control device for a generator driven by a four-stroke cycle engine is provided. The power generation control device includes a switching circuit for controlling an output current from the generator; and a power generation period control device co... | 07/19/2011 |
| 7982327 | Wind turbine generator system and control method of the same A wind turbine generator system includes: a wind turbine rotor including a blade having a variable pitch angle; a generator driven by the wind turbine rotor; and a control unit controlling the output power of the generator and the pitch angle of the blade in respons... | 07/19/2011 |
| 7977806 | Portable electronic device including electric generator A portable electronic device includes a case; a revolution body rotatable with respect to the case; an electric generator converting rotational kinetic energy of the revolution body into electrical energy; a gear assembly transferring rotational force of the revolut... | 07/12/2011 |
| 7966103 | Apparatus and method for operating a wind turbine under low utility grid voltage conditions A wind turbine and an associated method for controlling the output current from the wind turbine to an electric power grid and including the wind turbine and the method for controlling the current under conditions of grid voltage variations due to changing grid cond... | 06/21/2011 |
| 7963110 | Systems and methods for improving drivetrain efficiency for compressed gas energy storage In various embodiments, systems for providing a constant electrical output from a compressed gas energy storage and recovery system include a hydraulic-pneumatic energy storage and recovery system configured to provide a varying pressure profile at least at one outl... | 06/21/2011 |
| 7964982 | Axial in-line turbomachine A turbomachine has a housing defining an axis and having an axially outwardly directed first end wall. A shaft rotatable about the axis inside the housing has a first end projecting axially from the housing. An electric rotor is provided on the shaft, and an electri... | 06/21/2011 |
| 7960851 | Power generator and method for generating power A power generator for use in a unidirectional flowing fluid has a fixed part and a movable part, the movable part is mounted on the fixed part for reciprocal movement with respect to the fixed part between first and second positions. A valve element on the movable p... | 06/14/2011 |
