Abstract: The present invention relates to a method for shutting down a wind power facility, said wind power facility comprising a power generator, a power converter comprising generator side and grid side converters being separated by an intermediate DC circuit, and power dissipation or power storage means being operatively connected to the intermediate DC circuit, the method comprising the steps of determining that the wind power facility needs to be shut down, and operating the generator side converter in accordance with a load time curve during shutdown of the wind power facility in order to avoid overloading of selected generator side converter components and the power dissipation or power storage means. Moreover, the present invention relates to a wind power facility for performing this method.

Abstract: The gas turbine power generation system of the present invention repeats either the supply or absorption of power, in addition to generating power. A frequency converter for converting a frequency of power is connected between the rotating electrical machine and a power system via a power line, and a controller obtains a request for an output from the gas turbine power generation system and controls the combustor on the basis of the request. With respect to the frequency converter, the controller performs frequency converter control for changing the rotational speed of the rotating electrical machine on the basis of the request. The rotating electrical machine supplies or absorbs power in accordance with the change in the rotational speed. With respect to the speed adjustment mechanism, the controller performs speed adjustment mechanism control for setting the rotational speed to a reference value.

Abstract: A gravity driven generator include a wheel hub surrounded by a circular wheel frame having a plurality of radial spokes extending from the hub to the frame and each carrying a movable weight that is impelled from a resting position proximate the hub to an extended position proximate the frame as the wheel rotates from the 12 o'clock position to the 6 o'clock position. This results in placing the overall structure out-of-balance and causes rotation. The movable weight are impelled inward from the 6 o'clock position to the 12 o'clock position. The rotating hub is connected to generators, such as geared generators, to produce electrical power. In a preferred embodiment, the movable weight are carried on tracks and impelled by electromechanical induction devices.

Abstract: Antivibration device comprising two frames and an elastomer body interconnecting said frames and delimiting a first hydraulic chamber linked to a second deformable hydraulic chamber via a throttle passage. A microturbine is rotatably mounted in the throttle passage and is coupled to a generator. The microturbine is configured to be always driven in the same rotational direction by the fluid when the fluid reciprocates along opposing first and second paths within the throttle passage.

Abstract: A method and associated control arrangement are disclosed for controlling a de-rated power output of a wind turbine generator, where the wind turbine generator is associated with a predetermined power ramp rate upper limit and operating with a de-rated rotor speed. The method includes ramping the power output from an initial power level to a target power level during a ramping interval. During a first portion of the ramping interval, the power output is ramped at a first power ramp rate less than the power ramp rate upper limit. The method further includes ramping the rotor speed to a predetermined rotor speed value contemporaneously with ramping the power output during the first portion of the ramping interval. The first power ramp rate is determined such that a difference between the power output and the target power level is monotonically decreasing during the entirety of the ramping interval.

Abstract: A wind turbine for converting wind into mechanical energy, includes a support and a vane rotatably connected to the support, the vane including an elongated body and a wind receptacle formed as a lid hinged to the body such that the receptacle can adopt an open configuration wherein the lid is hinged away from the body, and a closed configuration wherein the lid is hinged towards the body, the lid having an outer surface directed away from the wind when the receptacle takes the open configuration, and an opposite inner surface, wherein the inner surface of the lid is provided with profiles protruding from the inner surface, and extending in a direction perpendicular to the longitudinal direction of the vane, and wherein the profiles diverge toward the site where the lid is hinged to the body.

Abstract: A vehicle including an engine, a generator, a motor, a driving member and a control device. The generator includes a rotor, a stator having a stator core with a winding wound thereon, and an inductance adjustment device that changes an inductance of the winding by changing magnetic resistance of a magnetic circuit for the winding that passes through the stator core. The current adjustment device adjusts a current outputted from the generator to the motor, which drives the driving member. The control device, upon receiving a request for increasing the current to be supplied to the motor, directs the inductance adjustment device to adjust the generator to operate in a state in which the inductance of the winding is low, directs the engine to increase a rotation speed thereof to increase the rotational power, and directs the current adjustment device to increase the output current of the generator.

Abstract: A method and aircraft for providing bleed air to environmental control systems of an aircraft using a gas turbine engine, including determining a bleed air demand for the environmental control systems, proportionally supplying low pressure and high pressure bleed air to the environmental control systems, wherein the proportional supplying is controlled such that the conditioned air stream satisfies the determined bleed air demand.

Abstract: A method of operating a wind power plant in a weak grid environment is provided to achieve desired system stability criteria and to support an electrical grid during disturbances or faults. The wind power plant is coupled to an electrical grid, and includes a power plant controller for controlling a plurality of wind turbine generators. The method includes, when a weak grid criterion is fulfilled, setting the power plant controller to operate in a weak grid mode by providing, when a grid voltage deviates beyond a threshold voltage, a reduced active power reference to the plurality of wind turbine generators. The method further includes, when the electrical grid recovers, generating a reduced amount of active power based on the reduced active power reference.

Abstract: A control device estimates a flow rate and an effective height difference of a fluid machine based on a characteristic detectable with regard to a rotating electrical machine and correlating with the flow rate and the effective height difference of the fluid machine. A total flow rate in a pipe system is estimated based on these values estimated by the control device and a flow resistance characteristic line, and cooperative control of the fluid machine and the flow rate control valve is performed such that the estimated value of the total flow rate becomes close to a target flow rate of the total flow rate in the pipe system.

Abstract: Methods, systems, and devices are disclosed for wind power generation. In one aspect, a wind power generator includes a support base; inductors positioned over the support base in a circular array; an annulus ring track fixed to the base support and providing a circular track around which the inductors are located; an annulus ring rotor placed on the annulus ring track and engaged to rollers in the circular track so that the annulus ring rotor can rotate relative to the an annulus ring track, in which the annulus ring rotor include separate magnets to move through the circular array of inductors to cause generation of electric currents; and a wind rotor assembly coupled to the annulus ring rotor and including wind-deflecting blades that rotate with the rotor and a hollow central interior for containing a wind vortex formed from deflecting wind by the blades to convert into the electric energy.

Abstract: Systems and methods for protecting a generator are provided. An example method can include receiving a signal indicative of a voltage associated with a stator. The method can include receiving a signal indicative of a nominal voltage associated with the stator. The method can include receiving a signal indicative of a monitoring state associated with the generator. The method can include receiving a signal indicative of a deadband range. The method can include determining a voltage ratio based at least in part on the voltage associated with the stator and the nominal voltage. The method can include determining an adjusted operating limit using a multiplier determined based at least in part on the voltage ratio. The method can include generating a power command to control operation of the generator based at least in part on the adjusted operating limit.

Abstract: An airflow generator power supply of an embodiment supplies alternating-current voltage to a plurality of airflow generators on a blade of a wind turbine generator. The power supply has a frequency converter, a plurality of transformers, and a switch. The frequency converter generates alternating-current voltage. Each transformer amplifies the alternating-current voltage and applies the amplified voltage to the corresponding airflow generator. The switch outputs the alternating-current voltage from the frequency converter to one selected from the transformers.

Abstract: The invention discloses an ocean current power generator disposed in the ocean. The ocean current power generator includes two power generators, a foil floating member and a control unit. Each of the power generators includes an impeller, and the ocean current drives the impellers to rotate to generate electricity. The foil floating member is connected to the two power generators, and the foil floating member includes a front body and a rear body. The control unit is configured to control the amount of sea water in the front body or the rear body, so as to adjust the center of gravity of the foil floating member.

Abstract: A wind generation system includes a wind turbine for generating mechanical power, a doubly-fed induction generator for converting the mechanical power to electrical power, a converter for converting the electrical power to a desired electrical power for supplying to a power grid, and a transformer through which a stator of the generator is coupled to the power grid. When a measured rotation speed feedback from the rotor of the generator is lower than an original cut-in rotation speed of the rotor, a cut-in rotation speed of the rotor is lowered by determining a DC link voltage margin of the converter, determining a DC link voltage setpoint of the converter based on the determined DC link voltage margin; and controlling the converter based on the determined DC link voltage setpoint; and/or by increasing a turn ratio of the transformer to reduce a grid voltage from the power grid.

Abstract: The heat pump includes a terminal block box housing a terminal block for supplying an electric power to at least one electrical device. The terminal block box is supported and made rotatable in a horizontal direction by a hinge. The terminal block box is located between a portion of side plates of a package and electromagnetic valves located on the side of the portion of the side plates. As a result, maintain of electrical devices can easily be performed.

Abstract: A power plant for an aircraft such as an unmanned aero vehicle in which a gas turbine engine drives an electric generator to produce electrical power for a system load of the aircraft. An engine control unit monitors engine performance and regulates engine power output through fuel flow control to a combustor. A power control module regulates power output of the generator to the system load and to a battery through a bus. A pulse width modulation is used between the power control module and the bus to optimize performance of the gas turbine engine instead of adjusting fuel flow to the combustor.

Abstract: Techniques are described for operating a wind power facility in order to provide reactive power support to a power grid. The wind power facility may be a wind turbine or a wind power plant. An exemplary method includes increasing an amount of reactive power injected into the power grid, decreasing an amount of active power injected into the power grid by a certain amount, and dissipating and/or storing substantially the certain amount of active power.

Abstract: A modular electric power plant housed within a container equipped with a transformer for direct connection to an local power distribution system that can supply energy in remote areas is disclosed. The container provides noise control, and includes a set of units that are interconnected and are capable of generating medium-voltage electric power for supplying a local power distribution system. The units include generator units; a cooling unit; a distribution unit and transformer built-in to a tank for collecting spilled oil. The built-in tanks have double walls for collecting contaminated oil/water installed inside the container base, while air inlets for aiding cooling and at least one pair of fans are provided in the cooling unit compartment. The generator units are powered by gas, diesel, or biodiesel automotive engines. Each generator is connected to an exhaust pipe for gases that is installed on the container upper wall.

Abstract: This invention provides a modularized ocean energy generating device and a built-in module thereof. The built-in module includes an inner frame, at least one hydraulic generator module, at least one mounting shaft, at least one driving unit, and at least two barriers. The modularized ocean energy generating device includes an outer frame, and the inner frame is detachably disposed in the outer frame. The hydraulic generator module is disposed in the inner frame and is mounted at the at least one mounting shaft, and the at least one mounting shaft is rotatably mounted at the inner frame. The driving unit is connected to the mounting shaft to drive the mounting shaft to rotate. The barriers are disposed at the inner frame or the outer frame and located at upstream and downstream sides of the hydraulic generator module along a water flow direction, respectively.