Abstract: The disclosed embodiments relate to wind and hydropower vessel plant. The vessel plant is configured for generating renewable electrical energy. The wind and hydropower vessel plant comprises apparatus which relates to exposable turbine and/or submersible turbine configuration. Both exposable and submersible turbines are incorporated in a system by reference, comprising a platform for producing renewable electrical energy that is storable and/or transportable. The disclosed embodiments further include a plant for the production of hydrogen, methane, oxygen, desalinated water, salt and supplemental energy.

Abstract: A wind turbine is provided. The wind turbine includes a generator, an output thereof being connectable to a power grid via a power transmission path, the power transmission path comprising a generator side converter coupled to the output of the generator, a grid side converter coupled to the power grid, and a DC link coupled between the generator side converter and the grid side converter. For diverting the generator power, a load dump arrangement is provided which includes at least one resistor, a plurality of switches, and a plurality of electrical connections which electrically connect the at least one resistor to the output of the generator and across the DC link via the plurality of switches. One common and configurable load dump is used for both converter system failures and grid failures. As compared to two separate load dumps for converter failures and grid failures, the single load dump will require a smaller space for a wind turbine.

Abstract: An energy converter system includes a rotor and a stator configured to be relatively stationary with respect to an environment. One of the rotor and the stator includes a field coil array and braking magnets, while the other of said rotor and said stator includes a permanent magnetic array that is configured to induce an electrical current in the field coil array in response to relative motion of the rotor and the stator. Magnets in the permanent magnetic array are oriented such that like poles of the magnets are disposed adjacently to concentrate a magnetic field through the field coil array. The braking magnets are oriented such that poles of the braking magnets face like poles of the closest respective magnet in the permanent magnetic array.

Abstract: Various embodiments of linear electric generators and arrangements thereof are disclosed. One such generator includes a permanent magnetic array with magnets that are oriented such that like poles of the magnets are disposed adjacently to concentrate a magnetic field through a coil array. To enhance the magnetic field distribution, the magnets are affixed under a compressive strain due to repulsive forces resulting from proximity of the like poles. According to another aspect, a plurality of vibrational linear electric generators (VLEGs) can be arranged so that magnets of different VLEGs are oriented so that poles of opposite polarity are disposed adjacently to further enhance magnetic field concentration through coil arrays. In addition, a plurality of wave energy converters can be arranged in very close proximity, at most 8 times a height of a buoyant portion of the converters, to act as a seawall and thereby protect various structures from ocean waves.

Abstract: A variable speed wind turbine is configured to provide additional electrical power to counteract non-periodic disturbances in an electrical grid. A controller monitors events indicating a need to increase the electrical output power from the wind turbine to the electrical grid. The controller is configured to control the wind turbine as follows: after an indicating event has been detected, the wind turbine enters an overproduction period in which the electrical output power is increased, wherein the additional electrical output power is taken from kinetic energy stored in the rotor and without changing the operation of the wind turbine to a more efficient working point. When the rotational speed of the rotor reaches a minimum value, the wind turbine enters a recovery period to re-accelerate the rotor to the nominal rotational speed while further contributing to the stability of the electrical grid by outputting at least a predetermined minimum electrical power.

Abstract: Various embodiments of linear electric generators and arrangements thereof are disclosed. One such generator includes a permanent magnetic array with magnets that are oriented such that like poles of the magnets are disposed adjacently to concentrate a magnetic field through a coil array. To enhance the magnetic field distribution, the magnets are affixed under a compressive strain due to repulsive forces resulting from proximity of the like poles. According to another aspect, a plurality of vibrational linear electric generators (VLEGs) can be arranged so that magnets of different VLEGs are oriented so that poles of opposite polarity are disposed adjacently to further enhance magnetic field concentration through coil arrays. In addition, a plurality of wave energy converters can be arranged in very close proximity, at most 8 times a height of a buoyant portion of the converters, to act as a seawall and thereby protect various structures from ocean waves.

Abstract: In embodiments of the present invention improved capabilities are described for a mobile wind power support structure, comprising a superstructure with mobile platform support structures, and a plurality of deployable rotating wind power structures, wherein the plurality of deployable rotating wind power structures are positioned in the superstructure through a wind orientation facility.

Abstract: A wind turbine having one or more magnets for reducing friction between the turbine support and a turbine rotor. The reduction of friction between the turbine rotor and the turbine support allows for an increase in energy production and scale of the wind turbines. The magnet configuration employs a ring of cylindrically-shaped magnets at the bottom and opposed by a corresponding number of generally rectangular-shaped magnets. Bearing magnets are also employed for axial stabilization.

Abstract: Apparatus and method is disclosed for generating usable power derived from oscillatory hydro-kinetic energy available in the movement of waves having a given height and being spaced apart by a predetermined distance at the surface of a body of water. Apparatus and method is disclosed for generating usable power derived from hydro-kinetic energy available in a body of water moving in at least one direction of movement, the at least one direction being substantially horizontal or substantially vertical. Apparatus and method is disclosed for generating usable power derived from hydro-gravitational forces available at a site having a source of water at a first elevation higher than a second elevation at a selected location where the usable power is to be derived.

Abstract: An alternator has rectifying module groups. The rectifying module groups form a bridge circuit. The rectifying module groups have a load dump protection judgment section for monitoring an output voltage of rectifying module groups. When the monitored output voltage exceeds a first threshold voltage, the load dump protection judgment section provides to a control section an instruction to turn on MOS transistors in a lower arm of the bridge circuit at a time when a predetermined delay time has elapsed. When a second threshold voltage is lower than the first threshold voltage and the monitored output voltage becomes less than the second threshold voltage after the monitored output voltage exceeds the first threshold voltage, the load dump protection judgment section provides to the control circuit an instruction to turn on the MOS transistors in the lower arm after the MOS transistors are turned off during a predetermined time length.

Abstract: The control system of this floating wind turbine generator is a control system of a floating wind turbine generator in which the control system controls a pitch angle control section by a pitch angle instruction value calculated on the basis of signals detected by a second sensor detecting a relative angle between a nacelle and a tower and a third sensor detecting a yaw angle from a reference position of the tower so that a signal detected by a first sensor detecting wind direction deviation relative to a vertical direction of a rotation plane of wind turbine blades indicates an angle within a predetermined range from the vertical direction of the rotation plane of the wind turbine blades, and controls a yaw driving device by a yaw driving instruction value calculated on the basis of the signals detected by the second sensor and the third sensor.

Abstract: A wind turbine for producing power to a utility grid includes a rotor having one or more blades, wherein the rotor further includes one or more hydraulic pitch actuators for actively controlling the pitch angle of one or more of the blades. The wind turbine also includes one or more actuator hydraulic pumps adapted for powering the hydraulic pitch actuators, wherein the one or more actuator hydraulic pumps are powered by a normal operation energy source. The wind turbine further includes an emergency hydraulic pump also adapted for powering the hydraulic actuators, the emergency hydraulic pump being powered by an electrical energy storage. A method for powering one or more hydraulic pitch actuators for actively controlling the pitch angle of one or more blades of a wind turbine is also disclosed.

Abstract: An inverter generator used in combination with a motor and an ECU generating a pulse at each predetermined rotation angle of the motor is comprised of: an electric generator driven by the motor configured to generate alternating current electric power; estimating means for estimating an electrical angle of alternating voltage of the alternating current electric power from the pulse, the estimating means being electrically connected with the ECU; a converter configured to convert the alternating current electric power into direct current electric power, the converter electrically connected with the electric generator and the estimating means; and an inverter configured to convert the direct current electric power into alternating current output electric power, the inverter electrically connected with the converter.

Abstract: A generator airgap monitoring system includes a first proximity sensor disposed in a first location of a stator and configured to transmit a first signal representative of a first distance between the first proximity sensor and a plurality of rotor poles of a rotor, and a controller communicatively coupled to the first proximity sensor. The controller is configured to derive a first plurality of instantaneous airgaps based on the first signal and to determine a difference between a first instantaneous airgap of the first plurality of instantaneous airgaps and a second instantaneous airgap of the first plurality of instantaneous airgaps. The first plurality of instantaneous airgaps includes a first plurality of measurements of airgaps between the stator and the plurality of rotor poles when the rotor is rotating. The first instantaneous airgap and the second instantaneous airgaps include measurements for respective rotor poles.

Abstract: A staged cluster wind generator system generates electrical power from wind. The system includes a base and a housing coupled to a top end of the base. A primary generator is coupled to and positioned in the housing. A drive shaft is mechanically coupled to and extends from the primary generator through the housing. A propeller is coupled to the drive shaft and configured for being rotated by wind wherein the drive shaft drives the primary generator. An annular main gear is coupled to the drive shaft and rotated by rotation of the drive shaft. Each of a plurality of secondary generators is coupled to the housing. Each secondary generator has a drive gear operationally coupled to the annular main gear wherein rotation of the drive shaft drives each secondary generator.

Abstract: A generator system includes a generator having a stationary portion and a rotating portion. The generator includes a permanent magnet based exciter with permanent magnets disposed on the stationary portion. A first channel includes a first main field winding and a first main field power converter disposed on a rotating portion. The first main field power converter selectively delivers voltage from the exciter winding to the first main field winding. A second channel includes a second main field winding and a second main field power converter disposed on the rotating portion. The second main field power converter selectively delivers voltage from the exciter winding to the second main field winding. A generator control unit is connected to the first channel and the second channel. The generator control unit monitors an output voltage at each of the first channel and the second channel and generates the first and second control signals based on the output voltage.

Abstract: A power generation system including an airborne electricity generator, a tether assembly configured to carry electricity from the generator to land, the tether assembly having a first end portion coupled to the generator, and a winch assembly configured to reel the tether assembly onto a drum, wherein the winch assembly is configured to apply a reel tension to the tether assembly reeled onto the drum that is lower than a tension in the first end portion of the tether assembly.

Abstract: A system and method for reducing the energy used from an electric grid by providing electrical energy from non-grid sources and exchanging thermal energy with the structure. The system includes at least one weight that is connected to sprocket and generator that is turned when the weight is lowered into a shaft, so that electricity is generated, and then the weight is returned to starting position by using the generator as an electric motor and raising the weight using electrical energy from the solar panel or the wind generator. The system also takes advantage of the depth of the shaft to add a heat exchange system that is used to control the temperature within the structure.

Abstract: A circuit configuration for an electric machine, e.g., a starter motor for starting an internal combustion engine in a motor vehicle, includes a current limiting device for limiting a starting current of the electric machine. The circuit configuration includes a bridging device for bridging the current limiting device.

Abstract: The invention is a power generator using intermittent fluid flow. The invention facilitates the harnessing of electric power from intermittent wind sources. The apparatus includes panels that are pivotally attached to a frame at a substantially vertical orientation and pivot towards an acute angle to the horizontal. As wind blows, the panels lift outward relative to the vertical. The motion may be transferred by actuating a hydraulic cylinder. This motion pressurizes the cylinder and the pressurized hydraulic fluid may later be transferred into electric power via a hydraulic generator. The panels may also include one or more photovoltaic cells which collect and convert sun light into electric power.