Abstract: In a first aspect, a system for rotating an unbalanced direct drive wind turbine is provided. The system includes an auxiliary converter and a power source coupled to the auxiliary converter, wherein the auxiliary converter is configured to supply a current to the wind turbine generator for generating a torque to rotate the hub. In a further aspect, a method of rotating an unbalanced hub of a direct drive wind turbine is provided. In a yet further aspect, a method of installing a blade in a hub of a direct drive wind turbine is provided.

Abstract: A breaking waves power generator includes a platform, a plurality of water wheels rotatably mounted within the platform, and a deck plate mounted within the platform. The water wheels include a plurality of vanes, blades, paddles, or buckets that, when impacted by breaking water waves, cause rotation of the water wheels. Breaking water waves can travel over the deck plate. The deck plate has an angular position and horizontal position relative to the platform that are adjustable to guide the breaking water waves so that the water waves break against the vanes, blades, paddles, or buckets of the water wheels, causing rotation of the water wheels from which power is generated. A ramp is connected to the platform in front of the water wheels, over which water is guided to the platform so that water waves break against the water wheels.

Abstract: A method of controlling a wind turbine includes: accumulating a cumulative damage degree Du of each evaluation point of the wind turbine in a unit period over an entire evaluation period, to calculate a total cumulative damage degree Dt of the entire evaluation period at each evaluation point; comparing the Dt at each of the evaluation points with a first threshold value (P*Q) and comparing an increase rate dDt/dt of Dt at each evaluation point with a second threshold value to evaluate fatigue of a part to which each evaluation point belongs; and determining an operation mode based on an evaluation result into a normal operation mode or a low-load operation mode in which an output is suppressed compared with the normal operation mode.

Abstract: A device (1) is provided for generating electric energy from a pressurized fluid (4) including a stator (2), which includes a tubular body on which a solenoid (21) is wound, and a rotor (3) mobile housed inside the tubular body of the stator (2). The rotor (3) includes a ring-shaped support element (6) and a plurality of hydraulic blades (57) each provided with a respective magnet (5) and mounted on the supporting element (6), integral with it. The rotor (3) is rotated within the tubular body of the stator (2) by the pressurized fluid (4) entering the device (1), so that the magnets (5) of the hydraulic blades (57) generate a magnetic field (22) which induces electric energy in the solenoid (21) of the stator (2).

Abstract: A system for capturing the energy of fluid currents, using axial turbines with one free end and the other end fastened to a mechanical element or electric generator, characterized in that the turbines include coil springs, helically twisted plates or crossbeams, complete helical turbines with their shafts or just their blades, which capture the energy of wind or water, with their shaft or fastened end actuating an electric generator or mechanical system. In all cases the blades around the rotation axis of the turbines have an inclination such that they generate a torque in the same direction and the turbines are automatically oriented by the water or air currents, like weather vanes.

Abstract: The present invention discloses a ducted bidirectional tidal current power station system, mainly consisting of a bidirectional tidal current power generation device, a dam, an open sea, an inland sea, a duct, and an opening/closing gate. The bidirectional tidal current power generation device is installed in the duct on the bottom of the dam. Openings, respectively communicated with the open sea and the inland sea, are formed at two ends of the duct, and an opening/closing gate is arranged at each of the two openings. By the ducted bidirectional tidal current power station system of the present invention, the cost of marine construction, operation and maintenance of the tidal current power generation device in an open sea area is saved, and the complex structure of the power generation device in the tidal power station and the cost of strict construction of auxiliary devices and runners are avoided.

Abstract: A wind turbine system including a plurality of modules, each module including a frame and at least one wind turbine, a set of first electrically conductive members, and a set of second electrically conductive members. One of the first electrically conductive members is attached to a terminal of a generator and another of the first electrically conductive members is attached to another terminal of the generator to form a collection circuit configured to collect electricity generated by the turbine. The set of second electrically conductive members are connected to adjacent modules to form a concatenated string of second electrically conductive members to form a transmission circuit. The collected electricity is fed from the collection circuit to the transmission circuit along the concatenated string. At least one of the first electrically conductive members and at least one of the second electrically conductive members form structural rails of the frame.

Abstract: Methods and systems for substantially continual electrical power generation for a moving vehicle are disclosed herein. According to the various embodiments discussed herein, the battery range can be increased significantly using a variety of energy sources. The energy sources are configured to facilitate continual electricity generation based on: (i) one or more generators positioned around predetermined vehicle parts; (ii) wind energy created by the motion of the vehicle in relation to the surrounding medium, and (iii) solar energy. According to an embodiment, the system for continual electrical power generation in a moving vehicle comprises a generator having a coil-and-magnet arrangement around one or more vehicle components/modified components. In another embodiment, the system comprises an energy generator for converting solar energy and wind energy into electricity.

Abstract: An electrical generator is housed in an annular cavity between the casing and the propeller shaft of a turboprop, while imposing little or no additional space requirement and with lightweight ancillary equipment. The rotor of the generator is mounted on an autonomous shaft end. A flange of the outer casing is removable in order to access the generator and to enable its easy removal and remounting.

Abstract: A movable electrical generation system includes a generator operable to produce a supply of electrical energy, a prime mover operable to drive the generator, a first fuel, a second fuel different from the first fuel, a control system operable to deliver one of the first fuel and the second fuel to the prime mover and to control an electrical load applied to the generator based on one of a first fuel current protection limit and a second fuel current protection limit.

Abstract: A wind turbine is described which includes a support structure, a rotor which includes one or multiple rotor blades and which is situated on the support structure so that the rotor is freely rotatable about a rotation axis, and a generator which is connected to the rotor and which converts the wind energy into electrical energy when the rotor is rotating. The support structure includes a stationary ring on which the rotor is rotatably guided and on which the stator of the generator is situated.

Abstract: A solar and wind energy collection system, wherein solar power is gathered to perform the task of restarting the wind turbine. The system includes a wind turbine assembly with the wind turbine assembly including a plurality of wind turbine blades, a control system, a wind turbine blade positioning motor, a support structure, a solar energy collecting system including a thin film solar amorphous silicon photovoltaic material secured to the wind turbine support structure, and a wind turbine blade positioning control system that is operatively connected to the solar energy collecting system and the wind turbine blade positioning motor.

Abstract: An apparatus for generating electricity from a bidirectional water flow, such as tidal flow, includes a base structure, a primary flow pipe defining a first flow passage through the base structure, and a secondary flow pipe defining a second flow passage through the base structure. The primary flow pipe includes a convergent section a mixing chamber, the convergent section connected to a first end of the mixing chamber to define a venturi therebetween, and a diffuser section connected to a second end of the mixing chamber. The apparatus further includes an opening in the secondary flow pipe to provide fluidic communication between the second flow passage and the mixing chamber, a turbine connectable to a generator and arranged to be rotated by water flow from the second flow passage, and a control mechanism for directing the water flow from the second flow passage through the opening into the mixing chamber.

Abstract: A multimodal renewable energy generation system for generating electric power from more than one renewable energy source is disclosed herein. The system includes two or more spinner units configured on a vertical pillar. The spinner units are configured for rotation under influence of a stream of a corresponding fluid. A set of electric power generators is operatively coupled to each of the two or more spinner units to generate electric power when the corresponding spinner unit rotates. At least one of the two or more spinner units is configured close to a base portion of the pillar to harness power from sea waves and remaining of the two or more spinner units are configured with an upper portion of the pillar for harnessing power from wind. The spinner units are configured for rotation in a horizontal plane even at less powerful winds or water streams.

Abstract: A method of integrating an electric motor or generator as part of an aircraft engine shaft. The motor is used to rotate the rotor so as to cool the rotor in a temperature gradient. The generator is used to provide power to the aircraft. In one or more examples, a power generation device includes a gas turbine engine including a rotor shaft and a first casing around the rotor shaft; a transmission connecting the rotor shaft to a gearbox, the transmission comprising a drive shaft and a second casing around the drive shaft; and a brushless DC motor integrated with the engine and including one or more permanent magnets and one or more coils.

Abstract: In examples, a propulsion and electrical generation system including a gas turbine engine including a compressor and a bleed air outlet from the compressor, wherein the compressor is configured to compress a fluid, wherein a portion of the compressed fluid is directed out of the bleed air outlet to define bleed air from the compressor; and a turbo-generator including a combustor, wherein the combustor includes a fuel inlet and a bleed air inlet, wherein the bleed air inlet is in fluid communication with the bleed air outlet from the compressor, wherein the combustor is configured to receive the bleed air via the bleed air inlet from the bleed air outlet of the gas turbine engine and receive fuel via the fuel inlet, wherein the combustor is configured to combust the received fuel with the received bleed air, wherein the turbo-generator is configured to generate electrical energy via the combustion of the fuel by the combustor.

Abstract: The present disclosure provides a primary frequency modulation method for a wind turbine, which may include: detecting a current frequency of a power grid; determining an instruction value of a power change amount for a primary frequency modulation by a first determining process when the current frequency of the power grid is less than a standard frequency of the power grid, wherein the first determining process may include: determining a reference value of the power change amount for the primary frequency modulation based on the current frequency; and when it is determined that currently there is an active power headroom for the wind turbine, comparing the reference value with a current active power headroom value of the wind turbine and determining the instruction value of the power change amount for the primary frequency modulation; and performing the primary frequency modulation based on the instruction value of the power change amount.

Abstract: A generator set is disclosed. The generator set may include a liquid-cooled engine and an alternating current (AC) generator coupled to the liquid-cooled engine. The generator set may include an AC fan associated with the liquid-cooled engine and connected to the AC generator via a relay and an engine control module (ECM) associated with the liquid-cooled engine and connected to the AC fan via the relay. The generator set may include an engine temperature sensor associated with the liquid-cooled engine and connected to the ECM via a first circuit and an engine air temperature sensor associated with the liquid-cooled engine and connected to the ECM via a second circuit.

Abstract: An underwater turbine apparatus includes a nacelle, containing a generator; a rotor connected to a first end of the nacelle and in communication with the generator to cooperate therewith to convert kinetic energy to electrical energy; a float connected to the nacelle; and a stabilizer connected to the nacelle; a tower connected to the nacelle by a joint; a base supporting the tower; an auger protruding from the underside of the base; and a motor for driving the auger, operable to drill the auger into engagement with an installation surface for the underwater turbine. A method for installing an underwater turbine apparatus includes rotating an auger, on the underwater turbine apparatus, to engage a seafloor.

Abstract: A closed cycle engine power structure and a power generation method, includes a cylinder block and an inner shell. The inner shell is located at the cylinder block, and the inner enclosed cavity of the cylinder block is divided into an outer duct and an inner duct, and an electric coil is arranged in the inner shell. An Archimedes pump is arranged in the inner duct, the electric coil is in drive connection with the Archimedes pump to form a motor structure. Tension structures are arranged in the outer duct. The Archimedes pump is driven to rotate to form a pressure difference between the top and bottom of the cylinder block, generating airflow around the tension structures. According to Bernoulli principle, the pulling force is generated by tension structures. The tension structures concentrate on the cylinder block to form the power of the engine power structure.