Abstract: Method of operating a wind turbine in response to a wind speed, the wind turbine having at least a rotor with a plurality of blades and a generator comprising a generator rotor and a generator stator, the method comprising, at wind speeds above a first wind speed, increasing the pitch angle of the blades and reducing the rotor speed with increasing wind speed, said first wind speed being superior to the nominal wind speed; wherein at a second wind speed, the speed of the generator rotor is equal to the synchronous generator rotor speed, said second wind speed being superior to said first wind speed; and wherein at wind speeds superior to said second wind speed, the speed of the generator rotor is lower than the synchronous generator rotor speed.

Abstract: The invention relates to a rotary lobe pump including a pump housing with a pump chamber, an inlet opening and an outlet opening. A first multi-lobed rotary piston is rotably mounted around a first axis in the pump chamber. A second multi-lobed rotary piston is rotably mounted around a second axis in the pump chamber and meshes with the first rotary piston. The first and second rotary pistons are rotated by a drive unit to create a fluid flow from the inlet opening to the outlet opening. The drive unit includes a first electric drive motor mechanically coupled with the first rotary piston and a second electric drive motor mechanically coupled with the second rotary piston.

Abstract: Methods of operating a variable speed wind turbine as a function of a wind speed, the wind turbine having a rotor with a plurality of blades, a generator having a rated output power, and one or more pitch mechanisms for rotating the blades around their longitudinal axis, and a system for varying a torque of the generator. The methods comprise a sub-nominal zone of operation for wind speeds below a nominal wind speed and a supra-nominal zone of operation for wind speeds at or above the nominal wind speed, wherein at wind speeds at or near the nominal wind speed, the generator is allowed to generate more than its rated output power for a limited period of time. Also disclosed are wind turbines and wind farms adapted to perform these methods.

Abstract: A power generation unit includes a motor generator having a rotor with magnet, and a stator with coils driven in a plurality of phases, the coils of the respective phases not being connected to each other; and a driving control part that performs control so that a coil of each phase of the stator is brought into any one of a first state in which torque is generated by the rotor, a second state in which both ends of the coil are electrically released, and a third state in which both ends of the coil are short-circuited.

Abstract: A wave energy conversion system is provided including a pod, multi-radius energy transmission mechanism, and an electrical generating device. The pod is rotatably supported by a platform structure and the multi-radius energy transmission mechanism is in mechanical communication with the pod. The multi-radius energy transmission mechanism is configured to transmit a variable torque over a range of motion and is in mechanical communication with the electrical generating device.

Abstract: A method of operating an internal combustion engine coupled to a generator in the event of a grid fault of a power supply grid connected to the generator, in particular in the event of a dynamic grid voltage drop, wherein the internal combustion engine includes a turbocharger having a compressor in an air feed duct of the internal combustion engine and an exhaust gas turbine coupled to the compressor in an exhaust gas duct of the internal combustion engine, wherein there is provided at least one bypass valve for bypass of the compressor and/or for bypass of the exhaust gas turbine, wherein upon or after detection of the grid fault the at least one bypass valve is at least temporarily actuated.

Abstract: The invention relates to a wind power plant having a tower that has at least one bottom tower segment and a pre-manufactured fire protection module for fireproof receiving of a transformer. The fire protection module is placed within the bottom tower segment.

Abstract: An energy concentration device includes a pneumatic cylinder that allows for contact with waving sea water of the nature to make a float device to drive a piston rod to achieve an effect of up and down piston movement so as to realize an effect of pressurization of air inside the pneumatic cylinder, whereby the air may achieve an effect of increase of pressurization level through multi-staged pressurization and an effect of accumulation by being stored in a high-pressure air storage device for the purposes of electrical power generation with the pressurized air and supplying pneumatic power required by other applications, such as automobiles, motorcycles, buses, and factories and also for supplying of pneumatic power to household devices, such as household appliances and pneumatically-operating doors.

Abstract: The invention relates to supplying electric traction motors of a rail vehicle with electrical energy. Internal combustion engine/machine combination are operated such that alternating current is generated and used for operating at least one electric traction motor, in a first operating state of the machine in a generator mode. In a second operating state of the machine, an associated machine converter supplies alternating current and drives the associated internal combustion engine, wherein at least the machine converter associated with the second electrical machine is supplied, while the associated electrical machine is in the second operating state, via an electrical DC voltage line with direct current by a rectifier associated with the first machine, wherein the rectifier produces the direct current from alternating current generated by the first electrical machine.

Abstract: A leverage generator apparatus for generating electricity from energy transferred from a one or more partially rotating levers each operating on one or more triangular weighted swivel devices that are propelled over a center point on the partially rotating lever by one or more piston switches and actuators and each supported by a triangular support structure operating as a fulcrum at a center-point of the one or more partially rotating levers, such that the energy transferred from the leverage generator turns a crankshaft linked to a generator device. A renewable energy vertical leverage generator apparatus generates electricity from energy transferred by one or more pairs of rotating triangular weight car harness structures travelling on a track system operating as a receptacle to capture weighted car devices such that the triangular weight car harness structures rotate three hundred sixty degrees to produce forces sufficient to turn an axel of a generator device.

Abstract: A damper includes a polarized capacitor electrically connected to an electromagnetic motor. The surface area at a first fluid chamber side of a piston head is different from the surface area at a second fluid chamber side of the piston head in a cylinder. A positive electrode side of the polarized capacitor is connected to the electromagnetic motor at a side at which output voltage from the electromagnetic motor is positive when the piston head is displaced toward the first fluid chamber side.

Abstract: An aircraft engine includes at least one electrical apparatus, which can be driven by a driveshaft in order to generate electrical energy. A hydrodynamic torque converter, with guide blades, which can be adjusted via a mechanism, is arranged between the driveshaft and the electrical apparatus. The guide blades are adjusted as a function of a rotational speed of the driveshaft, wherein the rotational speed of a shaft of the electrical apparatus operated as a generator can be adjusted, essentially within a predefined rotational speed range, via the adjustment of the guide blades.

Abstract: The present invention pertains to a wind power installation (1) for generating energy, especially electric power, by means of the movement of ambient air, which installation comprises a flow channel (3), in which the ambient air is formed into a stream which flows through the channel, wherein the flow channel (3) comprises an outer jacket (5) forming its boundary, with: a first section (A) with a tapering, funnel-like cross section, into which a first portion of ambient air enters and is accelerated; a second section (B) of essentially constant cross section, in which a rotor (20) is present, which can be set into rotation by the through-flowing ambient air, wherein the second section (B) comprises a tubular extension (67); a third section (C), through which the tubular extension (67) of the second section (B) extends and which comprises a tapering, tubular inlet funnel (44), which surrounds the tubular extension (67) and serves to allow a second portion of ambient air to enter the flow channel (3); a fourth

Abstract: A generator having an electronic governor for controlling the speed of an engine to generate an output voltage from an alternator is disclosed. The generator includes an alternator coupled to an engine to generate an output voltage. The variable speed of the engine allows the alternator to generate a variable output voltage. An electronic governor monitors a time period between voltage benchmarks on the output voltage. The electronic governor compares the monitored time period to a reference time period and adjusts the position of the throttle based upon the comparison between the monitored time period and the reference time period. The reference time period is set based upon the desired output voltage frequency. In an alternate embodiment, the electronic governor senses the current draw from the alternator and adjusts the position of the throttle to prevent changes in the frequency of the output voltage.

Abstract: An energy unit capable of being configured in a transportation configuration and in an operational configuration. The unit comprises a container having first and second ends opposing a longitudinally-extending central section. In the transportation configuration, the container's central section is positioned generally parallel with a supporting ground surface. In the operational configuration the container is configured to be positioned with the first end on the supporting ground surface such that the second end is set apart in an upward direction from the supporting ground surface. The energy unit additionally comprises a wind turbine for generating electrical energy. In the operational configuration, the wind turbine is configured to be received within the interior space of the container, while in the transportation configuration the wind turbine is configured to extend from the exterior surface of the container.

Abstract: A wind turbine generator is disclosed herein. In a described embodiment, the wind turbine generator comprises an electrical generator 101 configured to generate AC signals, a plurality of power converters 110,112,111 operated by a gating signal with each power converter configured to convert the AC signals from the electrical generator 101 into fixed frequency AC signals. The wind turbine generator further comprises a controller configured to enter a fault mode when a grid voltage falls outside an acceptable threshold, and during the fault mode the controller is configured to provide a reactive current reference dependant on a grid voltage distant from the wind turbine generator. A method of controlling a wind turbine generator is also disclosed.

Abstract: A power supply arrangement adapted to provide auxiliary power to a wind farm that feeds into a HVDC transmission link is provided. The power supply arrangement has an auxiliary power supply to deliver auxiliary power (Paux) to the wind farm; a backfeed control for initiating provision of a backfeed voltage on the HVDC link during a wind farm downtime; a backfeed switch to close a DC current path between the HVDC link and the auxiliary power supply; and a power converter for converting the backfeed voltage into auxiliary power (Paux). A wind farm arranged to feed into a HVDC transmission link is also provided, having such a power supply arrangement for providing auxiliary power (Paux) to the wind farm during a wind farm downtime. A method of providing auxiliary power (Pbackfeed) to a wind farm during a wind farm downtime is also provided.

Abstract: An apparatus for road vehicles includes a sealed housing (07) which mounts the shafts (11 & 12) in bearings (10). Closed chain or belt loops (13) are driven by sprockets or pulleys (29) which are supported on the shafts (11 & 12) by one direction clutch bearings (09) such that the shafts (11 & 12) can only transmit power in a single direction (15). A multiple array of active elements (14) are activated by the vehicle wheels and have suitable means or geometry such that they transmit force to cause displacement of the chains or belts (13) and drive a generator (06) when activated but slip in the opposite return direction independently and without further effect to the chains or belts (13). A gearbox (28) may be used to change the shafts orientations. A multiple of chain or belt loops (13) are mounted to the shafts (11 & 12) at a suitable spacing in a direction perpendicular to the vehicle travel direction (04).

Abstract: The revolving overhead windmill includes airfoils that harvest wind energy using a configuration, in the class of vertical axis wind turbines, wherein the airfoils are modestly elevated above a water or ground surface through the use of buoyancy forces and elongated structural members. The airfoil angle of attack is controlled in a periodic manner as each airfoil revolves around a closed circuit of revolution, in order to optimize system energy harvest as measured by metrics such as megawatts of electric power generation under rated wind conditions. Typical large-scale applications in high wind, offshore locations can substantively contribute to utility-scale renewable energy production and also contribute towards climate change mitigation targets.

Abstract: A control box for a generator set, including a support structure configured to be mounted to a rail. The support structure can include a first planar panel configured to be mounted to the rail, and a second planar panel offset from the first planar panel and configured to be mounted to the rail. The control box can also include a top cover configured to be connected to the first planar panel and the second planar panel and to cover a top portion of the support structure, a first side cover configured to be connected to the first planar panel and the second planar panel and substantially perpendicular to the top cover, and a second side cover configured to be offset from the first side cover and configured to be connected to the first planar panel and the second planar panel.