Abstract: An apparatus for generating electrical power, comprising: a generator for generating electrical power; a handle having a first end that is rotatably coupled to the generator, and a second end that is rotatable 360 degrees about the generator in a substantially vertical plane from a top dead centre (TDC) position, through a bottom dead centre (BDC) position, and back to the top dead centre (TDC) position; a weight that is moveable along the handle between a first position, a piston arranged to move the weight between first and second positions. The piston being operable to move the weight along the handle from the first position to the second position, such that the weight provides a mechanical advantage as the handle rotates from TDC to BDC due to gravity acting on it, whereby rotation of the handle drives the generator thereby to generate electrical power. A corresponding method is also provided.

Abstract: Provided is a tower section arrangement for a guyed tower of a wind turbine, the tower section arrangement including: a tower section including a wall having an outer surface with a circumference, at least two brackets attached to the outer surface of the wall at different locations on its circumference, and at least two stay cables, wherein each stay cable is connected at its first end to one of the brackets and is configured for connection at its second end to a cable foundation, and wherein an angle (?) between each stay cable and a tangent to the outer circumference at the respective bracket has, in a top view of the erected wind turbine, a value of 90° when the respective stay cable is guyed.

Abstract: Provided is a wind power system. The wind power system may comprise: a rail for providing a movement path in a horizontal direction; a moving body configured to slide and move along the movement path of the rail; a plurality of blades installed on the moving body and providing power for the movement of the moving body on the basis of energy from the wind; and a nacelle having a generator for generating power by rotating in conjunction with the movement of at least one of the moving body and the blades.

Abstract: A cabin cover and a wind turbine generator set are provided. The cabin cover includes: a cover, the cover including first plates, second plates, and at least one support beam, the first plate and the second plate being alternately arranged, at least one group of adjacent first plate and second plate being spaced apart from each other and being fitted to the support beam, and the first plates, the second plates, and the support beams jointly enclosing an accommodating chamber; and fasteners, two or more of fasteners being provided and disposed in the accommodating chamber, at least one fastener detachably connecting the first plate to the support beam, and at least one fastener detachably connecting the second plate to the support beam.

Abstract: Provided is a method for controlling a wind power installation, the wind power installation having a generator for the generation of electric current, the generator having an air gap with a variable air gap thickness, the wind power installation being controlled in a part load range by means of a control regulation, the wind power installation being controlled in a manner which is dependent on the air gap thickness, the control regulation being selected or set in a manner which is dependent on the air gap width.

Abstract: Methods and systems are provided for a power-generating fluid flow arrangement. In one example, the fluid flow arrangement may include a primary conduit flowing a pressurized fluid and a bypass conduit coupled to the primary conduit. The bypass conduit may divert a portion of the pressurized fluid flow from the primary conduit to drive rotation of a turbine. A dual valve may be arranged in the bypass conduit to control both flow and pressure in the fluid flow arrangement.

Abstract: A voltage regulator for a generator having a dynamic voltage-to-frequency (V/F) ratio includes a memory, a voltage calculator, and a selection module. The memory is configured to store a plurality of voltage-frequency curves for the generator. The voltage calculator is configured to receive data indicative of an output of the generator and configured to determine a resistance value from the output of the generator and a voltage value from the output of the generator. The selection module configured to select a voltage-frequency curve from the plurality of voltage-frequency curves in response to the resistance value and configured to select a voltage-frequency ratio from the selected voltage-frequency curve in response to the voltage value. An output adjustment for the generator is determined in response to the selected voltage-frequency ratio.

Abstract: A wind plant includes at least one wind collector assembly configured to collect a wind stream; at least one booster arm in fluid communication with the at least one wind collector assembly, the booster arm configured to receive the wind stream and to increase the flowrate of the wind stream; and at least one exit conduit, the at least one exit conduit in fluid communication with the booster arm and rotatable with respect to the booster arm. The at least one exit conduit is configured to rotate with respect to the at least one booster arm in response to a thrust force generated by the wind stream exiting the exit conduit. A method of capturing energy from wind is also disclosed.

Abstract: A generator module for a vehicle includes a housing with a first conical surface, a rotor assembly with a second conical surface, aligned with the first conical surface, and a spring arranged to push the second conical surface into contact with the first conical surface. In an example embodiment, the first conical surface or the second conical surface includes a plastic surface or a friction paper surface. In an example embodiment, the rotor assembly is axially displaceable within the housing to compress the spring and move the second conical surface away from the first conical surface.

Abstract: The present disclosure provides a three-phase AC system and a control method thereof. The method includes: receiving an output signal of the three-phase AC system and obtaining a characteristic value of the output signal according to the output signal; performing virtual synchronous generator control on the inverter to obtain a fundamental electric potential; extracting a harmonic component from the output signal and obtaining an error signal according to the harmonic component and a reference value of the harmonic component; controlling the error signal to obtain a harmonic compensation electric potential; obtaining a control electric potential by superimposing the harmonic compensation electric potential with the fundamental electric potential; obtaining a pulse signal by modulating the control electric potential, and obtaining a switching signal of the inverter according to the pulse signal.

Abstract: A rotary electric machine system making part of a combined power system is equipped with a rotary electric machine having a rotor including a rotating shaft and a rotary electric machine housing in which the rotary electric machine is accommodated. In such a rotary electric machine, a first bearing and a second bearing are disposed between the rotary electric machine housing and the rotating shaft. The gas supplied from the gas supply source flows on an upstream side through a terminal casing in which electric terminal portions are accommodated, and on a downstream side through the first bearing and the second bearing inside the rotary electric machine housing.

Abstract: An exemplary two-step method for power system inertia online estimation is described. The first step is to accurately estimate the POI-level aggregated inertia. The second step is to calculate the system-level inertia constant by weighting all the POI-level aggregated inertia and to monitor the inertia spatial distribution. In one example embodiment, the PMU is installed at POI, the frequency spatial difference is considered, and the mechanical power is carefully treated.

Abstract: A system includes a generator control unit (GCU). The GCU includes a saturable reactor and a rectifier. Each of the saturable reactor and the rectifier has a separate input to receive AC power from a separate respective permanent magnet generator (PMG). A method includes supplying AC power from a first permanent magnet generator (PMG) of a generator to a saturable reactor of a generator control unit (GCU) that is operatively connected to control the generator. The method includes supplying AC power from a second PMG to a rectifier of the GCU, wherein the first PMG supplies a lower AC voltage to the saturable reactor than the second PMG supplies to the rectifier.

Abstract: An energy conversion system comprising: a riser conduit comprising a first liquid; a down-comer comprising a second liquid, the down-comer in fluid communication with the riser conduit, the second liquid comprising first liquid and finely divided material in suspension such that the second liquid has a higher specific gravity than the first liquid, the down-comer in fluid communication with a first tank and a second tank; a converter device arranged to convert energy of the first liquid into energy for output from the energy conversion system, and to discharge the first liquid thereafter; and a recirculator arranged to recirculate third liquid to maintain the finely divided material in suspension, the third liquid comprising second liquid and further finely divided material in suspension. The recirculator is arranged to discharge the third liquid to mix with the first liquid from the converter device to form the second liquid.

Abstract: The present invention relates to a gasket adapted for being placed between a transition piece and a monopile of a wind turbine. One embodiment relates to a gasket for formfitting the bottom part of a transition piece of a wind turbine, the gasket primarily manufactured in an elastomeric material and shaped as a hollow elongated body for surrounding at least a part of the monopile when mounted between the transition piece and the monopile, such that the gasket stabilizes the position of the transition piece relative to the monopile. The presently disclosed gasket can substitute the traditional grouting or bolting procedures when mounting a transition piece on a monopile.

Abstract: Air cooling device for the air cooling of a generator of a wind power installation by means of wind, comprising a cooling unit of the generator with a cooling unit outer surface, the wind flowing onto said cooling unit outer surface for the air cooling of the generator during the operation of the wind power installation, wherein an air deflector is arranged on the cooling unit outer surface of the cooling unit and has a first air deflection unit which extends outwardly at an acute angle starting from the cooling unit outer surface and forms with the cooling unit a converging first air deflection channel, which is configured in an operating state of the wind power installation to deflect the wind for the air cooling in the direction of the cooling unit.

Abstract: A turner gear arrangement (60) for turning a rotor of a wind turbine via a drivetrain thereof; said turner gear arrangement (60) comprising a motor (68), a torque transmission assembly (90), and a mounting assembly (80); said torque transmission assembly (90) comprising one or more rotational elements and including a turner output drive (92) rotating about an axis (R), said turner output drive (92) being operably coupled to and driven by said motor (68) and configured to transmit rotational motion to a gearbox output shaft of a said drivetrain, said turner output drive (92) further including an output guide portion (94); said mounting assembly (80) being configured to mount said motor (68) and said transmission assembly (90) in a fixed relation with respect to a wind turbine drivetrain; and wherein said mounting assembly (80) further includes a radial support interface (86) which operably engages with said output guide portion (94), to constrain movement of said turner output drive (92) in a direction transve

Abstract: The system and method described herein provide control for a power generating asset having a double-fed generator connected to an electrical grid. Accordingly, a non-deliverable component and a deliverable component of a total power output of a generator of the power generating asset is determined via a controller. A compensation module of the controller then determines a first control signal based, at least in part, on the non-deliverable component. The first control signal is configured to establish a modified rotor current setpoint. Additionally, a buffer module of the controller then determines a buffer control signal for a DC energy buffer based, at least in part, on the non-deliverable component. The DC energy buffer is operably coupled between a line-side converter and a rotor-side converter of a power converter of the power generating asset.

Abstract: Provided is a wind turbine, including a tower, a foundation, a transition piece, which is arranged between the tower and the foundation and which connects the tower to the foundation, a platform, which is arranged inside the transition piece, a service lift, which is lowered to the platform, and a permanent working platform which is arranged below the platform and in a distance thereof. Due to the permanent working platform, the service lift is easily accessible from below. The labor- and cost-intensive installation of a temporary scaffold below the platform is expendable. Advantageously, the working platform can also be used for array cable installation.

Abstract: The invention relates to controlling a power generating unit. Aspects of the invention include determining a virtual impedance value (Zvir), determining a virtual grid power (Pvsm) based on the virtual resistance value (Rvir) and the grid current (Igrid), determining a virtual synchronous machine rotational speed (?VSM) and/or a synchronous machine angle (?VSM) of a virtual synchronous generator, and determining a voltage reference (Vabc) for controlling a line side converter to generate the desired reactive power (Qgrid) based on the virtual synchronous machine rotational speed or angle (?VSM, ?VSM), a virtual voltage (?V??, ?Vdq) and the voltage magnitude reference (Vqref).