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Wave energy capturing device

Patent Number: 8110937
Publication Date: 2012-02-07
Inventor: Finnigan, Timothy Donegal

A wave energy capturing device (10) comprising a base (12) adapted for fixed connection to a submerged surface (14). At least one elongate buoyant paddle (26) is pivotally mounted to the base (12) about a first pivotal axis (22), for angular oscillation through an angle range when wave motion applies a force to the paddle (26). The paddle (26) has a longitudinal axis (27), an upper end portion and a lower end portion. An energy ...

Power transmission apparatus for wind power generation and wind power generator using the same

Patent Number: 8110936
Publication Date: 2012-02-07
Inventors: Lee, Yong Heun; Lee, Kwan Jae

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 second magnetic member which is provided around a rotor shaft of a generating unit. The second magnetic member is disposed at a position facing the first magnetic member such that similar poles of the first and second magnetic members ...

Apparatus for converting wave energy into electrical energy

Patent Number: 8110935
Publication Date: 2012-02-07
Inventor: Shin, Icksoo

An apparatus for converting wave energy into electrical energy includes a wave power generation unit including a frame and float guides. A wave power generation float is joined to the float guides for vertical motion in response to the wave energy. The wave power generation float includes at least one wave power conversion module. The wave power conversion module includes a module case and an air sealing tube formed in the module case for generally preventing fluids from entering the module ...

Portable electricity generator

Patent Number: 8110934
Publication Date: 2012-02-07
Inventors: Gezel, Joe; Ross, Brad

An apparatus for producing electricity includes an elongated body and an electricity generating device operatively connected to the elongated body. A drive shaft is positioned along the elongated body, the drive shaft having an input and an output. A driven shaft is positioned along the elongated body and spaced apart from the drive shaft, the driven shaft having an input and an output, the output driving the electricity generating device. There is a first mechanical linkage between the ...

Horizontal axis wind turbine with rotatable tower

Patent Number: 8106528
Publication Date: 2012-01-31
Inventor: Liu, Kuo-Shen

A horizontal axis wind turbine with rotatable tower including nacelle and blades. The tower, the blades, and the nacelle are rotatable by following the shift of wind direction so as to align the blades to be facing with the wind direction for enhancing performances thereof. Also can eliminate the gearbox, as compared to the conventional horizontal axis wind turbine that the nacelle is not completely fixed with tower, the present invention is easy to manufacture with reduced ...

Hydraulic power generator

Patent Number: 8106527
Publication Date: 2012-01-31
Inventor: Carr, Fred K.

The rotor shaft of an electrical power generator, placed in a wind or water current whereby the kinetic energy causes the rotor shaft to rotate, turns a hydraulic pump generating a hydraulic pressure. The hydraulic pressure is directed to a hydraulic generator motor coupled to an electrical generator. The hydraulic pressure causes the hydraulic motor to turn which spins the generator generating electricity which is transferred to an electric grid for distribution. The generator can be ...

Power converter for use with wind generator

Patent Number: 8106526
Publication Date: 2012-01-31
Inventors: Skorcz, Alex; Abolhassani, Mehdi; Keister, Thomas; Edwards, Ryan; Karmaker, Haran; Ledezma, Enrique

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 to the generator. Each of the power stages may receive at least one of the isolated supply ...

Wind energy installation with an autonomous energy supply for a blade adjustment device

Patent Number: 8106525
Publication Date: 2012-01-31
Inventor: Letas, Heinz-Hermann

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 to actuate a blade actuating motor. A shunt branch is provided with a current-balancing device in parallel with the energy store, the current balancing device configured to control the current shunt branch depending on a ...

Capacitor-compensation-type generator

Patent Number: 8106524
Publication Date: 2012-01-31
Inventors: Kamimura, Kenji; Shimizu, Motohiro

In a capacitor-compensation-type generator having a rotor wound with a field winding, a stator wound with an output winding adapted to cross flux generated by the field winding to output AC power, and an internal combustion engine that drives the rotor to rotate relative to the stator, there are equipped with an actuator that changes the engine speed and an actuator controller that controls operation of the actuator in accordance with a constant voltage operation mode in which the engine ...

Wind turbine alternator module

Patent Number: 8102073
Publication Date: 2012-01-24
Inventor: Morrison, Daniel

A wind turbine alternator module having an enclosure, turbine and rotor assembly with peripheral magnets and multi-phase stator for the production of energy from air movement. A bi-directional symmetrical vane turbine and rotor assembly is suspended in the enclosure by guide bearings around the periphery to permit operation in all wind conditions. One or more wind turbine alternator modules are combined in a polygonal housing with bottom inlets and attached to a roof vent structure to ...

Aerodynamic vibration power-generation device

Patent Number: 8102072
Publication Date: 2012-01-24
Inventor: Tsou, Kuei-Sheng

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 transducer. The piezoelectric transducer embedded in the blade includes related circuitry for electrically connecting to a load unit. When the airflow passes along the surfaces of the blade, the difference between the air speeds on both ...

River and tidal power harvester

Patent Number: 8102071
Publication Date: 2012-01-24
Inventor: Catlin, Christopher S.

An energy module comprising an energy absorber; and a mooring system, comprising a wing-shaped polymer shell attached to the energy absorber, the wing-shaped polymer shell designed to utilize the force of a passing current to create a downward force and thereby reduce any upward motion in the energy module; and a mooring cable housed inside the wing-shaped polymer shell and anchored to maintain the energy module in a fore and aft and a side-to-side position to provide stability, and to ...

Float-type energy-generating system

Patent Number: 8102070
Publication Date: 2012-01-24
Inventor: Terao, Yutaka

The objective of the invention is to provide a float-type energy-generating system that is able to maintain the system's body stably, without listing, while sailing, even in a strong wind, while efficiently generating electricity. The system includes a hull (4) that allows the system to be suspended underwater or to float on seawater, one or more plates (6) that receive the sea wind so as to allow the hull to sail, and one or more power generators (3) that generate ...

Water powered electricity generating device

Patent Number: 8102069
Publication Date: 2012-01-24
Inventor: Steelman, Gerald Erwin

The present invention relates to an apparatus for providing electrical energy from a flowing stream of water by capturing the flowing stream and transferring the captured energy to a rope which passes through a plurality of rotors connected to an electricity ...

Buoyant in-stream hydro turbine

Patent Number: 8102068
Publication Date: 2012-01-24
Inventor: Gutekunst, Brent Lee

A buoyant hydro turbine(31) for capturing and utilizing energy in the currents of flowing water. A driven component(33) produces electricity or other energy is coupled to and supported by a buoyant rotor(64), increasing efficiency and eliminating the need for an independent supporting structure. Tethered in flowing water, the current(71) rotates the rotors(32) and transfers rotatable energy to the central driven component(33) where electricity or ...

Method for the operation of a wind energy plant having a wind velocity measurement device

Patent Number: 8102067
Publication Date: 2012-01-24
Inventors: Schwarze, Holger; Bilges, Sören

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 mechanical load with the device for the detection of a mechanical load, determining an estimated value for the wind velocity, based on the determined mechanical load, comparing the wind velocity measured by means of the wind velocity ...

Inverter generator

Patent Number: 8102066
Publication Date: 2012-01-24
Inventors: Hashimoto, Shoji; Muronoi, Kazufumi

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 elements to supply to an electrical load, voltage and current supplied to the electrical load is detected, a power factor is calculated from the detected voltage and the current, a power of the load is estimated from the detected ...

Wave energy converter

Patent Number: 8102065
Publication Date: 2012-01-24
Inventor: Hobdy, Miles

A wave energy converter has a shell, a pendulum pivotally positioned in the shell, a magnet thereon, a variable inductor positioned in the shell, a pendulum adjustor for changing a center of gravity of the pendulum, a motion sensor positioned in the shell, a position sensor connected to the pendulum, a rotation sensor connected to the pendulum, and a controller connected to the motion sensor and the position sensor and the rotation sensor. The pendulum has a magnet thereon. The magnet of ...

Gas turbine with magnetic shaft forming part of a generator/motor assembly

Patent Number: 8097972
Publication Date: 2012-01-17
Inventor: Macchia, Enzo

A gas turbine engine including a first shaft being one of a main shaft concentrically mounted to at least one turbine rotor and a tower shaft directly driven by the main shaft and extending generally radially therefrom, the first shaft having a reduced diameter portion located within the gas turbine engine, an electrical assembly having a rotor comprising permanent magnets retained on an outer surface of the reduced diameter portion and a stator comprising a magnetic field circuit disposed ...

Wind turbine generator system

Patent Number: 8097971
Publication Date: 2012-01-17
Inventors: Futami, Motoo; Sakai, Hiromitsu; Ichinose, Masaya

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 voltage and increase in the DC voltage are ...

Method and arrangement in wind power plant

Patent Number: 8097970
Publication Date: 2012-01-17
Inventor: Hyvärinen, Veikko

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 mains converter part, of which the nominal power of at least one differs from the nominal power of other mains converter parts, and in the method there is selected for use the smallest possible, individual mains converter part ...

Method to estimate the output current of an automotive generator (alternator)

Patent Number: 8097969
Publication Date: 2012-01-17
Inventors: Reynolds, Michael G.; Verdejo, Julian R.

A control system of a vehicle comprises a current estimation module, a current sensor, and a current diagnostic module. The current estimation module determines an estimated output current of a generator of the vehicle based on an engine speed when the generator is operating in a steady-state condition. The current sensor measures an output current of the generator. The current diagnostic module diagnoses a condition of the current sensor based on the estimated output current and the ...

Position-controlled start from the AC line using a synchronous machine

Patent Number: 8097968
Publication Date: 2012-01-17
Inventors: Xu, Mingzhou; Anghel, Cristian E.

A synchronous electric machine operates as a starter-generator for an aircraft. When operating in a starting mode, a main stator of the machine is supplied with electrical power at a constant frequency. An exciter stator is supplied with variable frequency power. As rotational speed increases, the exciter variable frequency changes correspondingly to maintain synchronous operation of the machine and maximum torque. In a generator mode, variable frequency is applied to the exciter stator ...

Energy systems, energy devices, energy utilization methods, and energy transfer methods

Patent Number: 8097967
Publication Date: 2012-01-17
Inventor: Hamilton, Scott Robert

Energy systems, energy devices, energy utilization methods, and energy transfer methods are described. In one arrangement, energy utilization methods include providing first energy from a power grid to an induction generator at a first moment in time; using the induction generator and the first energy from the power grid, charging an energy storage device; using second energy from the energy storage device, powering a motor causing the induction generator to generate third energy during a ...