Abstract: An active rectifier controller decouples measurements of the phase and speed of a variable frequency synchronous generator from measurements of the AC output voltage. The active rectifier controller receives position information representative of the rotor position of the VFSG independent of a load connected to the VFSG that is used to determine the phase position and speed of the VFSG. Based on measurements of the generator speed and phase, the active rectifier controller controls the active rectifier to draw AC currents in-phase with the back-electromotive force (BEMF) voltage of the VFSG.

Abstract: A hydroelectric power generator system having a plurality of water wheels affixed to a support structure in a stair step formation. At the top of the support structure is a upper water reservoir with a plurality of spouts each having a shut off valve. At the bottom of the support structure is a water basin. When the valves on the spouts are open, water is flowing downward on the water wheels, which causes the water wheels to rotate. The rotational energy from the water wheels are transferred to rotary shafts via a pulley system. The rotational energy from the rotary shafts are transferred to generators using a ring and pinion gear system. The generators convert the rotational energy into electrical energy that is stored.

Abstract: A wind powered apparatus (or wind turbine) having two sets of counter rotating blades. Both sets of blades are connected to an alternator and are operable to rotate the stator and rotor thereof in opposite directions relative to one another, thereby doubling their relative speed. The apparatus is equipped with a conical front nose piece having a blunt tip that co-operates with the first and second sets of blades to improve performance of the apparatus by affecting its orientation and the rotational speed of the blades.

Abstract: In order to provide a rolling bearing for a wind turbine and a wind turbine which can prevent the deterioration of the lubrication condition even when the rolling bearing receives high load while the inner ring and the outer ring are kept still relative to each other, the wind turbine generator of the present invention for supporting a first member and a second member which rotates relative to the first member, comprises an inner ring to which the first member is fixed; an outer ring to which the second member is fixed; a center ring which is arranged between the inner ring and the outer ring and can rotate independently of the inner ring and the outer ring; rolling elements which are provided between the bearing rings in such a manner that the rolling elements can freely roll; and a center ring drive unit for rotating the center ring.

Abstract: A hybrid vertical axis energy apparatus comprising a housing assembly, a drive mechanism, a solar device, a motor, a vertical axle, and an electrical generator, is provided. The housing assembly is configured to rotate along its vertical axis in response to a force of wind and a force of thermal updraft of air flow. The drive mechanism is rigidly attached to the housing assembly and is in engageable communication with an adjacent drive mechanism attached on an adjacent housing assembly. The solar device is rigidly attached to the housing assembly. The motor is connected to and in electric communication with the solar device. The vertical axle is rigidly connected to the motor's axial shaft. The electrical generator is rotatably connected to the housing assembly or the adjacent housing assembly and converts the mechanical energy produced by rotation of the housing assembly and the adjacent housing assembly into electrical energy.

Abstract: A novel wind turbine configuration utilizes a permanent magnetic male and female levitation support for magnetic levitation. The novel wind turbine has a female part attached to a payload which is magnetically levitated above a male part of the levitation support. The female part and the payload are further operatively attached to a vertical axle structure which is held stationary by a point of contact. The point of contact and the vertical axle structure provide a stable axis of rotation for the payload and the female part, which can be rotated with near-zero friction due to the magnetic repulsion provided by same polarity of the female part and the male part within a conical region of the female part. In one embodiment of the invention, an alternator structure is uniquely arranged to enable the novel wind turbine to generate electricity with a high level of efficiency and durability.

Abstract: A wind power generation system having a group of wind turbine generators includes a superior controller having a generation power recording memory to record a sum of a generation power of the group of wind turbine generators and a charge and discharge power of a power storage system, a charge and discharge power command computing device for computing a charge and discharge power command for the power storage system in a second period by making use of information of the output power in a first period computed in the output power computing unit and information of a detection value at the present of the generation power recording memory, and a charge and discharge power control device.

Abstract: An alternator comprises a regulator configured to control the electric current to a field coil. The regulator includes a field driver circuit, the field driver circuit configured to deliver the electric current to the field coil at a switching frequency. The regulator further includes a controller configured to vary the switching frequency of the field driver circuit between a plurality of different switching frequencies. The alternator further comprises a sensor configured to detect a predetermined alternator condition, and the controller is configured to adjust the switching frequency of the field driver circuit in response to the sensed predetermined condition such as, for example, a rotor speed, a pulse width from the field driver circuit, an efficiency of the alternator, a temperature within the alternator, a temperature outside of the alternator, or magnetic noise of the alternator.

Abstract: A device for a wave-powered generator which is provided with at least one energy generator and lines for transferring energy to a consumer, the wave-powered generator comprising a main module provided with a running rod which is substantially vertical in its longitudinal extent, several supporting devices arranged around a portion of the running rod and arranged for sliding or rolling movement on surface portions extending in the longitudinal direction of the running rod, at least one sheave which is arranged to roll on the running rod, and transmission means which are arranged to translate the rotating motion of the at least one sheave into rotation of the drive shaft of the at least one generator; and a first float which is floatingly disposed in an area affected by waves and which is connected to the running rod by a primary driving line substantially of tensile strength.

Abstract: A generator which extracts operating energy from waves of a body of water. A plurality of floats may be suspended beside a rotary power collector. The rotary power collector is arranged to turn unidirectionally as the floats rise and fall vertically on the waves. Rotation of the rotary power collector is transmitted to a rotary generator. The floats may comprise rigid rods each having a finger which engages and rotates the rotary power collector. Alternatively, the floats may be suspended from ropes or the like which are wound around a reel, with the reel driving the rotary power collector in a manner controlled by ratchet action.

Abstract: A tidal energy capture means connects a turbine to its anchor by telescopic members which pivot about the anchor as axis in the plane of the tidal flow and whose combined length depends upon the force of this flow. These members can be locked at prescribed lengths by a remote signal, to control the level of the turbine during this movement. The anchor consists of a plug and socket, with buoyancy means for positioning the plug in the socket, and the telescopic members can be a rotatable shaft which drives equipment in the plug.

Abstract: A magnetized Foucault Pendulum electrical energy source having a gear transmission connected between the rotatable Foucault Pendulum and an electrical generator. A portion of the current from the generator is transmitted to an electromagnet which is periodically energized to repel a mass on the end of the pendulum to maintain the pendulum in continuous motion. The remaining portion of the electrical current is transmitted to individual households or to a power grid.

Abstract: The disclosure concerns a method for operating a wind turbine having an electrical system, the electrical system comprises a permanent magnet generator having a rotor and a stator, and a power electronic device electrically connected to the permanent magnet generator, wherein the power electronic device and a circuit breaker are electrically disposed in series between the permanent magnet generator and a grid, wherein the permanent magnet generator has permanent magnets and a generator winding into which a voltage is induced by the permanent magnets when the rotor is rotating, the method comprising: generating a signal for tripping the circuit breaker based on a field modification that is modifying the field of the permanent magnets of the permanent magnet generator. Further, the disclosure concerns a method for determining the temperature of at least one permanent magnet of a permanent magnet machine and a controller for a wind turbine.

Abstract: This invention discloses a power control system comprising a prime mover and a generator driven by the prime mover. A control device is coupled with the generator to ascertain a change in speed of the generator and vary an output power of the generator according to the change. The control device applies a signal to reduce the generator output power and another signal to restore the generator output power. The power control system may include a transmission, a speed converter, and/or an accessory.

Abstract: A handy terminal for a wind turbine generator, includes a connecting portion connectable to a connector provided in the wind turbine generator, an operating ends group including an operating button to generate an operating signal which selectively validates a control logic within a control circuit provided in the wind turbine generator, and a display portion for displaying the operating state of the operating ends group. The operating ends group includes a mode selecting button for selectively validates one of a maintenance mode and an operating mode of the wind turbine generator; and a rotor turning button for switching to the blades pitch control state in which blades of the wind turbine generator side are driven in the predetermined low speed with adjusting the pitch angle of the blades according to the rotational speed.

Abstract: A mechanical flow battery comprises a flywheel system in which a spinning axis can be driven by an air-powered motor and the structure of the gyroscope is employed in the mechanical flow battery. The structure of the gyroscope can be constructed by coupling the housing of the flywheel system with a nutation frame which couples a precession frame so that the spinning axis in the flywheel can be isolated from any outside gyroscopic torque.

Abstract: The present disclosure related to a method and a controller for controlling an AC generator which is used in connection with a wind turbine having a variable speed. The multi-phase generator is connected to a controllable converter and is controlled to provide a desired power or a desired torque. An AC reference signal is generated, which would provide the desired power or torque. A P+Resonant converter may be used to control an electrical characteristic of the generator in view of the reference, by applying control signals to the controllable converter. Thereby, the need to transform the electrical characteristic into a rotating frame may be eliminated which provides for a less complex controller.

Abstract: The Wind Powered Generator System is a combination of many common automotive parts. Automotive wind power is a new area and incorporates as a secondary layered roof. The air velocity or wind turns the fun blade when either vehicle is in motion or not, producing an electrical current.

Abstract: An energy storage and recovery system employs air compressed utilizing power from an operating wind turbine. This compressed air is stored within one or more chambers of a structure supporting the wind turbine above the ground. By functioning as both a physical support and as a vessel for storing compressed air, the relative contribution of the support structure to the overall cost of the energy storage and recovery system may be reduced, thereby improving economic realization for the combined turbine/support apparatus. In certain embodiments, expansion forces of the compressed air stored within the chamber, may be relied upon to augment the physical stability of a support structure, further reducing material costs of the support structure.

Abstract: A method for validating and initializing a control system for an electrical generator connected to a power converter in a wind turbine. The method may include generating a first parameter value representing control signal for controlling the stator flux of a stator of the electrical generator, measuring a second parameter value specifying an electrical operational characteristic of the electrical generator, and determining an accuracy level of the control signal based on the first parameter value and the second parameter value, wherein the accuracy level of the control signal has to fall within a predefined threshold for the control system to be validated.