Abstract: An electrical power generator for a wind turbine comprising: a generator housing, a stator at a radially outward position and a rotor in a radially inward position, wherein the rotor comprises a cylindrical ring structure arranged about a rotational axis, R, and defining a central hollow portion. The electrical power generator further comprises a rotor shroud attached to the generator housing and which extends about the rotational axis, R, wherein the rotor shroud includes a dome portion that extends into the central hollow portion of the rotor so as to protect the cylindrical ring structure of the rotor. Advantageously, the rotor shroud provides a tunnel-like surface that extends into the central hollow portion of the generator so as to prevent objects such as tools from contacting components of the rotor. The invention also relates to a method for 15 assembling such an electrical power generator with a rotor shroud.

Abstract: A system for generating electricity includes a bar and a source of a pressurized fluid. A three-way connection piece has an inlet opening connected to the source through an inlet solenoid valve and a discharge opening connected to a discharge solenoid valve. A connection line connects the three-way connection piece to a working cylinder. A shaft of the working cylinder strikes against the bar causing an oscillating motion. A first and a second rod convert the oscillating motion into a back-and-forth translational motion which a drive means converts into a cyclical drive motion. An apparatus for generating electrical energy is driven by the cyclical drive motion. During operation, the inlet solenoid valve and the discharge solenoid valve are continuously switched from a first working position to a second working position, and vice versa, at a frequency which is identical to the natural frequency of the bar.

Abstract: The present application discloses a heat exchange system and a motor. The heat exchange system includes: a first heat exchange unit disposed in a to-be-cooled area of the motor for heat exchange, the first heat exchange unit including a plurality of first heat exchange branches connected in parallel; a second heat exchange unit disposed outside the motor, and being connected to the first heat exchange unit through a pipeline assembly to form a closed heat exchange loop. Each first heat exchange branch is connected with a first heat exchanger, a first valve group, and a first pressure information component, and the opening and closing of the first valve group is controlled according to the first pressure information of the first pressure information component.

Abstract: Systems and methods for voltage regulation of high voltage direct current systems are provided. In certain embodiments, a system includes a generator that generates alternating current (AC) voltage. The system further includes a power converter that converts the AC voltage into regulated direct current (DC) voltage. Also, the system includes a voltage regulator. In additional embodiments, the voltage regulator includes an AC voltage regulator that regulates the AC voltage generated by the generator. Also, the voltage regulator includes a DC voltage regulator that regulates the DC voltage produced by the power converter. Moreover, the voltage regulator includes a regulator selector that selectively activates one of the AC voltage regulator and the DC voltage regulator based on a current from the power converter and at least one of a voltage of the generator and a voltage of the power converter.

Abstract: Provided is a method of estimating a value of wind speed a wind turbine is subjected to, the wind turbine having a rotor with rotor blades at least one having an adaptable flow regulating device installed, the method including: obtaining values for power output of the wind turbine, rotor speed of the rotor, and pitch angle of the rotor blades; obtaining state information of the adaptable flow regulating device; and estimating the value of the wind speed based on the values for power output, rotor speed, pitch angle and the state information of the adaptable flow regulating device.

Abstract: An apparatus for harvesting energy, such as solar, wind, wave, thermal, and the like, including a solar panel and a duct supporting the solar panel at an operational angle. The duct comprises a bottom shroud and side shrouds, therein forming a large aperture, a small aperture, and an oblique frustum shaped cavity. The oblique frustum shaped cavity is configured to direct a flow of fluid from the large aperture to the small aperture. A flow energy generator, such as a turbine, located at the small aperture is configured to collect flow energy. Temperature differences between the solar panel and the environment may be used to harvest thermal energy with a thermoelectric generator. Fluid flow under the solar panel may decrease the panel temperature and increase the efficiency. Generators may be operated in reverse to lower the solar panel temperature and increase efficiency.

Abstract: A rotor support, a rotor, a motor, and a wind turbine are provided. The rotor support includes a magnetic yoke and a reinforcement portion provided on a first side surface of the magnetic yoke; a second side surface of the magnetic yoke is configured to operably dispose a magnet of a rotor; the reinforcement portion covers each magnetic circuit area, which can generate a partial magnetic circuit, of the first side surface; the sum of the radial thicknesses of the reinforcement portion and the magnetic yoke overlapped is greater than a preset thickness, and the radial thickness of the magnetic yoke is less than the preset thickness.

Abstract: An intake-exhaust transport apparatus, a mobile power generation system and an assembling method thereof are provided. The assembling method includes: roughly adjusting a position of the intake-exhaust system in a second direction with respect to the power generation apparatus by the second conveyance; jacking up the intake assembly and the exhaust duct as a whole, to be higher than a height of the power generation apparatus by the lifting mechanism; moving the power generation apparatus to a region under the intake-exhaust system by the first conveyance and adjusting a position of the power generation apparatus in the first direction with respect to the intake-exhaust system; and connecting the intake assembly and the exhaust duct to a top of the power generation apparatus.

Abstract: Electric and hydrogen technology automobiles and vehicles such as trucks, buses, ships and boats are believed to be the future of transportation; however for the time being, the problems surrounding the technologies are significant and have kept the consumers away for various reasons including the capacity of batteries and fuel cells, the lack of filling stations, and most of all the limited distance the vehicles can travel without a recharge, which for small electric vehicles can take up to 20 minutes before they can continue to travel with a full battery or fuel cell. Commercial vehicles in particular; cannot take the time to stop frequently and worst yet take the significant amount of time that it would take to recharge their systems.

Abstract: A battery storage and/or a wind turbine including the battery storage. A generator for generation of an electric current. An electric flow path configured for conducting the electric current to an electric grid via a power converter, the power converter. The battery storage electrically connected to the electric flow path, the battery storage comprising a plurality of battery cells, each battery cell comprising at least one battery element and at least two semiconductor switches. A controller is configured for selectively controlling the voltage over the battery storage by controlling the status of the at least two semiconductor switches of a plurality of the battery cells, and thereby whether a current path through the battery storage is bypassing the at least one battery element or passing through the at least one battery element of one or more of the plurality of battery cells.

Abstract: This invention relates to a vortex station and method for producing a vortex similar to one of a group consisting of dust-devils and waterspouts. The apparatus comprises a ground platform forming a base for the vortex station, a plurality of vanes to direct an air flow into a vortex station and about the vortex station in a substantially swirling manner, at least one wind turbine disposed near the centre of said vortex station, in a path of a concentrated air flow, wherein the movement of the air in the vortex station is such that an atmospheric buoyancy vortex is created in the centre of the vortex station, a supply of a working fluid (e.g. water) to the vortex station at or near the centre of the vortex station such that the air is of a saturated condition or an at least partially saturated condition with the working fluid (e.g. water), the working fluid (e.g. water) supplied at a sufficient quantity or amount so as to assist with maintaining buoyancy and stability of a vortex created.

Abstract: Provided is a device and a method of damping front and backward movements of a tower of a wind turbine, wherein the wind turbine includes the tower and a rotor, the rotor being mounted at the top of the tower to rotate about a rotational axis in which the front and backward movements of the tower occur, and the rotor has a plurality of blades, wherein each blade has at least one corresponding active add-on member which is actuated by a corresponding actuator to alter aerodynamic properties of the blade. Each add-on member is actuated by the corresponding actuator to alter the aerodynamic properties of the blade in a manner that the rotor is configured to damp the front and backward movements of the tower of the wind turbine.

Abstract: A free piston generator based on a rigid synchronous transmission system is provided, which belongs to the technical field of power energy. The present disclosure solves the problems of low power generation efficiency and low stability of the existing free piston generator. The free piston generator based on the rigid synchronous transmission system includes a first linear generator set, a second linear generator set, a rigid synchronous transmission assembly, two high-pressure cylinders arranged at two ends of the first linear generator set, and two low-pressure cylinders arranged at two ends of the second linear generator set.

Abstract: The present disclosure relates to a method for determining reliability of one or more load sensors in a wind turbine. The method comprises measuring loads with the load sensors during operation of the wind turbine; determining in-plane moments based on the measured loads; selecting the in-plane moments with 1 p frequency; and comparing the selected in-plane moments with theoretical in-plane moments due to a mass of the blade. The method then comprises determining that the load sensors have reduced reliability if the selected in-plane moments deviate from the theoretical in-plane moments by more than a first threshold value. The present disclosure also relates to wind turbine systems incorporating load sensors and methods for on-line determination of correct functioning of load sensors mounted on a wind turbine blade.

Abstract: A system and method are provided for controlling a power generating subsystem connected to a power generating system at a point of interconnection (POI). A subsystem controller receives a feedback first data signal corresponding to an electrical parameter for reactive power or power factor contributed by the power generating subsystem to the POI, the first data signal having a first signal fidelity. The subsystem controller receives a second data signal indicative of the electrical parameter measured at the power generating subsystem and having a second signal fidelity higher than the first signal fidelity. The subsystem controller generates a correlation value between the first and second data signals and applies the correlation value to modify a setpoint value for the electrical parameter at the POI. The subsystem controller uses the modified setpoint value and the second data signal to generate a setpoint command for the power generating subsystem.

Abstract: The present invention relates to a method of controlling a wind turbine by automatic online selection of a controller that minimizes the wind turbine fatigue. The method therefore relies on an (offline constructed) database (BDD) of simulations of a list (LIST) of controllers, and on an online machine learning step for determining the optimal controller in terms of wind turbine (EOL) fatigue. Thus, the method allows automatic selection of controllers online, based on a fatigue criterion, and switching between the controllers according to the measured evolution of wind condition.

Abstract: A component for connection between a generator and a prime mover in a power generation system is disclosed. The component may be an adaptor (20, 50, 110) or a bracket (80, 90), and may be arranged to house a fan. The component comprises a rear member (24), a front member (22), and a plurality of cross members (26) which connect the front member to the rear member. The cross members are wedge-shaped and/or lie at an angle with respect to a radial direction. The component may be arranged to surround a fan. The component may facilitate airflow and enhance thermal performance while being efficient from a structural and cost perspective.

Abstract: A gas turbine engine includes a turbine rotor connected to a main compressor rotor. A tail cone is mounted inward of an exhaust core flow. A generator rotor is adjacent a generator stator. The generator rotor and stator are mounted within the tail cone. A passage connects a bypass flow path to the tail cone. A cooling air compressor is operable within the passage. The turbine rotor drives a shaft to drive the generator rotor and the cooling compressor. A method is also disclosed.

Abstract: A hydroelectric power generation system includes a water turbine, a generator connected to the water turbine, and a controller. The water turbine is arranged in a flow path through which a fluid flows. The controller performs a pressure control by controlling the generator to regulate a pressure of the fluid downstream of the water turbine. The pressure control includes a first control regulating the pressure in parallel with a regenerative operation of the generator, and a second control regulating the pressure in parallel with a power running operation of the generator.

Abstract: Systems and methods are provided to cool a heat producing component in an electrical machine system. The electrical machine includes a supercritical carbon dioxide (SCO2) wherein the SCO2 is a working medium of a heat exchanger that is arranged in the electrical machine system to cool a fluid that cools the heat producing component and/or wherein the SCO2 directly cools at the heat producing component.