Abstract: A system includes a solar panel unit comprising at least one solar panel connected to a respective molten salt cell, a wind motor unit comprising at least one wind motor that is powered by the solar panel unit, each wind motor having a channel, a turbine unit comprising at least one turbine, each turbine associated with a respective wind motor via the channel, the turbine unit powered by the wind motor unit, a first battery receiving and storing power generated by the turbine unit to be used by the system, a second battery receiving and storing power generated by the turbine unit for use outside of the system, and a housing that protects at least the wind motor unit and the turbine unit.

Abstract: Disclosed is a method of condition monitoring a WTG (Wind Turbine Generator) comprising acts of collecting and storage of at least the following data sets together with their time stamps. Collection of generator power production measurements. Collection of mechanical status measurements. Collection of generator torque measurements. Collection of nacelle direction measurements. Collection of meteorological conditions measurements. The method compromises a further act of synchronizing the data sets. The invention also relates to a system for condition monitoring a WTG. The invention further relates to a system for visually inspecting a WTG.

Abstract: A wind turbine nacelle configured for mounting on a wind turbine tower and housing a rotor-supporting assembly defining a rotation axis. The nacelle comprises a main unit arranged to be connected to a wind turbine tower and housing the rotor-supporting assembly. A crane is placed outside the main unit and connected directly to the main frame.

Abstract: The present disclosure provides a fracturing system comprising fracturing equipment. The fracturing equipment comprises a power supply platform, a gas turbine engine, one or more rectifiers, and a power system comprising at least one of the following: a generator, an energy storage, and an electricity supplier. At least two of the gas turbine engine, the power system, and the one or more rectifiers are arranged on the power supply platform. A first end of the power system is connected to the gas turbine engine. A second end of the power system is connected to the one or more rectifiers. The power system is configured to output a voltage to the one or more rectifiers directly without passing through a rectifier transformer.

Abstract: An AC to DC conversion device has first and second AC input terminals arranged to be coupled respectively to first and second terminals of a phase of an AC current generator, an H-bridge rectification device comprising two pairs of diodes, each pair being coupled to a respective one of the AC terminals to produce a DC output comprising a rectified back EMF waveform, and a waveform generator. The waveform generator comprises an output coupled to the DC output of the H-bridge rectification device, and is configured to input a unidirectional waveform to the DC output having the same magnitude and fundamental frequency as the rectified back EMF, phase shifted by a predetermined angle relative to the rectified back EMF waveform.

Abstract: A fluid propulsion system configured to propel an ambient fluid through a propulsion channel. To do so, the present invention includes a hollow main body having a propulsion channel extending therethrough. The main body includes a base structure, a flexible bladder attached thereto, and a fluid (e.g., liquid, gas, or plasma) enclosed within the bladder. The present invention further includes a field source that produces an electromagnetic or magnetic field. The bladder and/or the enclosed fluid is configured to respond to the electromagnetic or magnetic field. Movement of the bladder in response to energization of the field sources alters the amount of occlusion of the propulsion channel. Energizing sequential field sources causes the occluded section of the bladder to propel the ambient fluid through the propulsion channel creating a reactionary force to propel the fluid propulsion system in the opposite direction.

Abstract: A support device (1) and a wind generating set. The support device is used for the wind generating set, and the wind generating set comprises an electrical apparatus (3). The support device comprises: a support frame (10) which is of a hollow frame structure and comprises a plurality of beam structures (11), wherein the adjacent beam structures are connected to each other, and a relative position between at least one set of two beam structures with a connection relationship is adjustable; and a support platform (20) arranged on one surface of the support frame in a height direction of the support frame and connected to the beam structure, wherein the support platform is used for supporting the electrical apparatus. The device can be used for supporting the electrical apparatus of the wind generating set, and at the same time, the size and/or bearing capacity can be changed according to apparatus requirements, and a better universality is achieved.

Abstract: An Integrated Starter Generator system (100) comprising a battery (110) and a three-phase brushless DC electric machine (130). The electric machine (130) has a stator (132) with 3n stator teeth (132?), ‘n’ being a natural number, and each stator tooth (132?) has a coil corresponding to one of the three phases. The electric machine (130) further has a rotor (134) with 4n rotor poles (134?) facing the stator (132), and magnets on the rotor poles (134?) are disposed with an alternating sequence of magnet polarity facing the stator (132). Herein, back-emf constant of the electric machine (130) is substantially between 25% of a nominal battery voltage and 75% of the nominal battery voltage.

Abstract: Disclosed is a device with a stator and a rotor, the device comprising: a stator; a rotor, wherein an air gap is provided between the rotor and the stator; and an air gap protection device fixedly connected to the stator, wherein the radial distance between the air gap protection device and the rotor is less than the radial distance between the stator and the rotor, and the air gap protection device rotates relative to the rotor when in contact with the rotor. By arranging the air gap protection device fixedly connected to the stator, the air gap protection device can rotate relative to the rotor when in contact with the rotor, and the radial distance between the air gap protection device and the rotor is less than the radial distance between the stator and the rotor.

Abstract: A method of damping oscillations in a multi-rotor wind turbine and a wind turbine are provided. The wind turbine comprises a wind turbine support structure and at least a first nacelle with a first rotor and a second nacelle with a second rotor, at least one of the nacelles being located at a position away from a central longitudinal axis of the wind turbine support structure. The method comprises the steps of receiving and processing motion data, selecting a damping algorithm and generating a pitch control signal. The processing comprises determining at least one prominent oscillation mode of the wind turbine support structure and selecting a corresponding damping algorithm.

Abstract: A wind energy generation system includes a tower, a nacelle provided in an upper portion of the tower to be rotatable around a central axis of the tower, a hub provided in front of the nacelle to be rotatable around an axis orthogonal to the central axis, and one or more blades provided on the hub. An oil receiving portion is provided on an outer wall of the tower to protrude outward from the outer wall and encircle the outer wall around the central axis. One or more opening portions that guide the oil received by the oil receiving portion into the tower are provided at a portion of the outer wall of the tower at which the oil receiving portion is provided. In the wind energy generation system, outflow of oil to the outside from the generation system can be inhibited.

Abstract: A hydrodynamic electrification system that generates electricity from water moving from a high side to a low side and around a structure that divides the low side from the high side generally includes a water transport system that directs the water from the high side presenting a hydraulic head, over the structure, and to the low side. The system includes a power extraction system having a wheel that receives the water from said water transport system and a mounting system having a high side anchor that connects near an intake to the water transport system at the high side and having a low side anchor that connects to the power extraction system at the low side.

Abstract: A power generation system includes a shroud that defines a fluid flow path. A gas turbine engine is in the fluid flow path, and the gas turbine engine includes a compressor, a combustor downstream from the compressor, and a turbine downstream from the combustor. An electric generator is in the fluid flow path upstream from the turbine, and the electric generator includes a rotor coaxially aligned with the turbine. A plurality of non-lubricated bearings rotatably support the gas turbine engine.

Abstract: A stator for a generator of a wind turbine includes stator segments including a lamination stack, and a stator support structure with segments extending in an axial direction and being adjacently located in a circumferential direction to form a ring-like structure, wherein each support structure segment includes at least one longitudinal carrier element, which extends in an axial direction and includes a stator segment-sided lamination attachment section for fixing the carrier element to the respective stator segment using a lamination attachment assembly, wherein the lamination attachment assembly for each carrier element includes: a counter bearing element to be inserted into a cavity of the lamination stack and extending at least essentially over the complete axial length of the stator segment, a stiffening bar to be placed inside the carrier element on the lamination attachment section, extending at least essentially over the complete axial length of the support structure segment.

Abstract: A gas engine power generating system includes an electricity generating component including a gas engine, an alternating-current electricity generator, a cooling system portion, an exhaust system portion, an engine control unit, a battery, and an alternating current/direct current inverter, and a housing. A plurality of the electricity generating components are provided as electricity generating units, and are accommodated in the housing. Each electricity generating unit is configured to be capable of generating electricity independently, the plurality of electricity generating units are electrically connected together in parallel, operation, shut-down, and the amount of generated electric power for all the electricity generating units are managed by a total control unit, and direct-current power from each electricity generating unit is aggregated and converted to alternating-current power, and is supplied to the load side.

Abstract: An approach for adjusting the inclination of a solar panel and the pitch of one or more micro-turbines to maximize power output. The approach predicts wind velocity at a small opening of an inclined solar panel wherein a plurality of micro-turbines is located. The approach predicts solar irradiance striking the inclined solar panel. The approach calculates an optimal solar panel inclination angle and micro-turbine pitch based on maximizing power output. The approach adjusts the solar panel inclination angle and micro-turbine pitch based on the calculation.

Abstract: A wave energy capture, storage, and conversion assembly, comprising at least one pump assembly, and a point absorber operatively arranged to displace the at least one pump assembly in a first circumferential direction.

Abstract: Aspects of the present invention relate to a method of voltage control for at least one wind turbine generator configured to absorb and supply reactive power on demand, the method comprises: receiving a dispatch signal from a power plant controller indicating a reactive power set point; determining a terminal voltage level of the at least one wind turbine generator; generating a reactive power correction value based on a deviation of the terminal voltage level from a voltage set point; adjusting the reactive power set point by the reactive power correction value; and controlling the at least one wind turbine generator according to the adjusted reactive power set point.

Abstract: A wave energy converter is provided which includes a nacelle having a starboard side and a port side axis, and housing a power take-off. The wave energy converter also includes at least one buoyancy member coupled to the nacelle, and a ballast tank coupled to the nacelle. The ballast tank, the at least one buoyancy member, and the nacelle, together form a first body, where the first body is coupled to the power take-off. The wave energy converter further includes a float and a drive arm forming a second body, where the second body is rotatably coupled to the first body about a coupling axis, and the second body is coupled to the power take-off. The second body is configured to rotate relative to the first body about the coupling axis within a radial span bounded by a proximal end of the float and a radially distal end of the float.

Abstract: A runner for a hydraulic turbine configured to reduce fish mortality. The runner includes a hub and a plurality of blades extending from the hub. Each blade includes a root connected to the hub and a tip opposite the root. Each blade further includes a leading edge opposite a trailing edge, and a ratio of a thickness of the leading edge to a diameter of the runner can range from about 0.06 to about 0.35. Further, each blade has a leading edge that is curved relative to a radial axis of the runner.