Abstract: In general, devices and systems for a tangentially actuated magnetic momentum transfer generator, and methods of use thereof, are provided. In an aspect, an electrical generator having a plurality of turns of wire forming a coil, a rotating magnet positioned in the coil, at least one stationary magnet positioned about the coil, and a slider movable relative to the rotating magnet in a direction tangential to an outer surface of the rotating magnet are provided. The slider can be configured to cause rotation of the rotating magnet, and the rotation of the rotating magnet and/or an interaction of the rotating magnet with a magnetic field of one or more of the at least one stationary magnet and the slider magnet can induce a voltage across a first terminal end and a second terminal end.

Abstract: Provided is a wind turbine including a tower, a tower adapter attached to the tower and a nacelle attached to the tower adapter, whereby the tower adapter houses at least one electrical device of the wind turbine for conditioning or switching power provided by a generator of the wind turbine.

Abstract: The present invention relates to a method for stabilizing a rotor of a wind turbine during a time period following an abnormal grid event, the method comprising the steps of detecting an occurrence of the abnormal grid event, reducing an allowable rotor thrust from a first thrust limit to a second thrust limit, detecting that the abnormal grid event has ended, and maintaining the second thrust limit a selected time period after the abnormal grid event has ended. The present invention further relates to a wind turbine controller and a computer program product for performing this method.

Abstract: An aircraft electric power generation and start system (EPGSS) includes a main machine, a starter permanent magnet generator (PMG), a generator PMG, and a carrier injection sensorless (CIS) system. The main machine selectively operates in a start mode or a generator mode. The starter PMG includes a first PMG stator and a first PMG rotor and is configured to rotate along with the shaft. The generator PMG includes a second PMG stator and a second PMG rotor configured to rotate along with the shaft. The CIS system determines one or both of a PMG voltage and a PMG current corresponding to the first PMG during the start mode, and determines a rotational position of the main rotor based on one or both of the PMG voltage and the PMG current.

Abstract: A hydrokinetic turbine system for harvesting energy from riverine and tidal sources, including a first floating dock, a marine hydrokinetic turbine mounted on the first floating dock, and a second floating dock. The system further includes a winch assembly mounted on the second floating dock and operationally connected to the first floating dock and a linkage assembly operationally connected to the first floating dock and to the second floating dock. The linkage assembly may be actuated to pull the first floating dock into contact with the second floating dock. The linkage assembly may be actuated to distance the first floating dock from the second floating dock, and the winch assembly may be energized to orient the first floating dock into a position wherein the marine hydrokinetic turbine is above the first floating dock and wherein the winch assembly may be energized to orient the first floating dock into a position wherein the marine hydrokinetic turbine is below the first floating dock.

Abstract: The present invention discloses a system for providing mobile power, in which the required equipment for the power supply system at fracturing fields as well as connection cables and connection hoses are integrated properly, assigned onto three transport vehicles for movement and effectively connected. Intake components and a turbine generation system are combined on a first transport vehicle and installed together, then transported to customer sites directly, thus saving the installation time at the user sites. The two different designs on the locations of an exhaust stack and an exhaust silencer not only meet the requirements of road transportation, but also meet the requirements of exhaust gas emission during operations.

Abstract: A hydroelectric power generation system includes a water turbine disposed in a channel that carries a flow of a fluid, a generator driven by the water turbine, and a controller that performs a first control. The channel includes a first channel located on an inflow side of the water turbine. The controller controls, in the first control, a flow rate or a head of the water turbine so that any one of a pressure of the fluid in the first channel, a flow rate of the fluid in the first channel, and a liquid level of the fluid in a first reservoir from which the fluid flows out to the first channel approaches a first target value.

Abstract: A power system includes a turbine assembly including a turbine and a turbine shaft, a generator assembly including a generator and a generator shaft, an inertia assembly including a flywheel coupled to the generator shaft, and a clutch assembly for coupling the turbine shaft to the generator shaft. The clutch assembly is transitionable between a closed state, in which the turbine shaft is coupled to the generator shaft, and an open state, in which the turbine shaft is decoupled from the generator shaft. The power system is operable in a power generation mode when the clutch assembly is in the closed state and a synchronous condenser mode when the clutch assembly is in the open state.

Abstract: An impeller for wind power generation includes: a plurality of blades; and a hub which is provided with a rotating shaft at a center and around which the plurality of blades are arranged at substantially equal intervals in a circumferential direction. The blade is formed to extend while widening a width toward an outer periphery of the impeller, a line segment connecting a leading edge and a trailing edge of the blade is inclined at an angle of approximately 10 degrees or more and approximately 20 degrees or less with respect to a plane perpendicular to a rotating shaft of the impeller, and in the plurality of blades, a trailing edge of a blade on a front side in a rotation direction of the impeller and a leading edge of a blade on a rear side in the rotation direction partially overlap each other in a front view of the impeller.

Abstract: A method for operating a generator of a wind turbine includes generating, via a controller, a time series of a plurality of operating signals of the generator. The method also includes applying at least one algorithm to the time series of the plurality of operating signals of the generator to generate a processed time series of the of the plurality of operating signals of the generator. Moreover, the method includes identifying, via the controller, patterns in the processed time series of the plurality of operating signals of the generator to identify one or more of at least one slip event occurring in the slip coupling or a surface health of the slip coupling. Further, the method includes implementing, via the controller, a control action when the at least one slip event occurring in the slip coupling is identified or the surface health of the slip coupling is indicative of degradation in the slip coupling.

Abstract: An apparatus is described for converting river, tidal or ocean current energy into another form of energy, such as electrical, mechanical, or chemical energy. The apparatus can include a first underwater sail(s) coupled to a first cable and second underwater sail(s) coupled to a second cable. The sails are configured to catch water flows and move their respective cables along pulleys. The first cable and the second cable can form a main cable loop that is coupled to a bull wheel. A second cable loop configures the sails to best catch the water flow. The pulleys can guide the main cable loop along a rotational direction. The rotational movement of the bullwheel can be transferred to a generator to convert the water flow into another form of energy.

Abstract: A power generation apparatus and a power system are provided. The power generation apparatus includes a first transportation means, a gas turbine and a generator, the first transportation means has a first platform, a first housing is provided on the first platform, the gas turbine is arranged in the first housing and has a first input terminal and a first output terminal, the generator is arranged in the first housing and has a second input terminal and a second output terminal, the first output terminal is connected with the second input terminal.

Abstract: An offshore power generating system has a buoyancy body shaped as a hull with a bow and aft end, and elongated mast extending up from the buoyancy body to the buoyancy body about a horizontal transverse axis. A rotor is supported in one end of the longitudinal mast for rotation about a horizontal axis. The buoyancy body is kept in position with the bow turning up into wind and incoming waves. Rotational support of the mast has a horizontal rotational axis through the center of gravity of the mast that lies in the center plane of the buoyancy body above the aft end when the buoyancy body lies in operational position in calm sea with the rotational axis of the rotational support of the mast orthogonal to the center plane of the buoyancy body. A method for on-board loading and commissioning of mast with installed rotor on-board a buoyancy body.

Abstract: A turbogenerator (1) for an aircraft (2) comprising: a turboshaft engine (3); an electric generator (4) comprising a rotor (5) driven mechanically by the turboshaft engine (3) and a stator (6) supported by a housing (7) of the electric generator (4); characterized in that the turbogenerator (1) comprises a static separator (8) for separating an air/oil mixture coming from the turboshaft engine (3), the static separator (8) being positioned around the housing (7) of the electric generator (4).

Abstract: A turbine controller system and method for a fluid-driven power generation unit may include an electrical circuit that connects to a power source and a rotor of a generator of the fluid-driven power generation unit. A turbine control circuit, which may include multiple circuits, may receive data from sensors or from external sources and may generate a signal to control the generator based on a determination that at least one weather condition exists. Control may be effectuated by motoring the rotor of the generator to mitigate a potential impact of the determined at least one weather condition on the fluid-driven power generation unit.

Abstract: A combined power system includes a rotary electric machine housing in which a rotating shaft of a rotary electric machine is rotatably supported. For the rotary electric machine housing, a cooling jacket and compressed air flow passages are formed on an outer circumferential side of the cooling jacket. On an outer side wall of the rotary electric machine housing, a terminal casing is formed and electric terminal portions are accommodated in the terminal casing. Compressed air is supplied to the terminal casing. An electrical current converter formed on the outer side wall of the rotary electric machine housing is cooled by the cooling jacket.

Abstract: The invention relates to a method for feeding electrical power into an electrical supply grid. The method includes rectifying a first AC voltage of an electrical power, produced by a generator, into a first DC voltage and increasing the first DC voltage to a second DC voltage such that the second DC voltage has a step-up ratio in relation to the first DC voltage. Alternatively, the method includes rectifying the first AC voltage into the second DC voltage without producing the first DC voltage. The method includes inverting the second DC voltage into a second AC voltage for feeding electrical power into the electrical supply grid depending on an feed setpoint value and setting the second DC voltage depending on the feed setpoint value and actual value. The second DC voltage is increased depending on an increase in the feed setpoint voltage or actual value.

Abstract: A system may include a variable frequency independent speed (VFIS) motor-generator. The system may further include a first power conditioner coupled to a set of stator windings of the VFIS motor-generator and a second power conditioner, distinct from the first power conditioner, coupled to a set of primary windings of a high-frequency transformer, where a set of secondary windings of the high-frequency transformer are coupled to a set of rotor windings of the VFIS motor-generator. A method may include providing a first power signal at the set of stator windings. The method may further include generating a second power signal at the second power conditioner for driving the set of rotor windings, where a shaft speed of the VFIS motor-generator is based on a difference between a first frequency of the first power signal and a second frequency of the second power signal.

Abstract: An arrangement for generating energy made up of at least two rotating bodies of revolution partially immersed in a dynamic fluid. The at least two rotating bodies of revolution have their longitudinal axis of rotation located perpendicularly to the flow of the fluid, and are further associated to support means and to drive means, being immersed about 30% of their diameter. One of the at least two rotating bodies of revolution is located upstream of said dynamic fluid with its longitudinal axis of rotation located in a longitudinal slider of the support means with the possibility of translation and variable rotation speed. The other of the at least two rotating bodies of revolution is located downstream of the dynamic fluid, with its longitudinal axis of rotation being attached to the support means, and with a rotation synchronized with the flow speed of the dynamic fluid.

Abstract: A method for damping sub-synchronous control interactions (SSCI) in a grid-forming inverter-based resource connected to an electrical grid includes receiving, via a controller, a current feedback signal in a synchronous reference frame. The method also includes rotating, via the controller, the current feedback signal to a new reference frame associated with a sub-synchronous frequency range. Further, the method includes determining, via the controller, a sub-synchronous component of the current feedback signal. Moreover, the method includes rotating, via the controller, the sub-synchronous component of the current feedback signal back to the synchronous reference frame. In addition, the method includes determining, via the controller, a voltage command associated with sub-synchronous damping for the inverter-based resource as a function of the sub-synchronous component and a virtual resistance setting.