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WO/2011/034056A1 |
Provided is a wind power generation device that can use a general-purpose inverter. A constant-voltage-mode inverter (30) is used. When a wind-power generator (2) is generating power, switching circuits (40-1 to 40-3) are turned on and o...
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WO/2011/026827A2 |
The invention relates to an excitation device for an electric machine having a superconducting load, in which a current control device is provided in the static part of the electric machine. A transmitter comprising a primary winding is ...
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WO/2011/027056A1 |
The alternator according to the invention includes a stator (s), a rotor (R), synchronous rectification means (20, 21) for rectifying AC voltages (j1, j2, j3) supplied by the stator into DC voltage (B+), and voltage-controlling means (3)...
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WO/2011/026250A1 |
The invention relates to a generator system comprising a mains transformer (1), a mains circuit breaker (2), a generator (4) with a stator winding (4.1 ) and rotor winding (4.2), a converter (7) with a DC-link (7.3), a mains inductor (9)...
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WO/2011/024517A1 |
Upon a plug-in operation, a first winding (12A), a third winding (12C), and a second winding (12B), which function as armature windings for supplying an R-phase current of a three-phase rotating electrical machine (10), are connected to ...
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WO/2011/018716A2 |
The present invention relates to a three-phase rotating electric machine, comprising a stator and a rotor each comprising an exciter electric winding and a main electric winding, the exciter winding of the stator (respectively of the rot...
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WO/2011/018549A2 |
The inventive protection arrangement of an electric power system comprises a relay arrangement (12)for measuring current, voltage or both of an electric grid(15). The relay arrangement is adapted to detect over-current, under-voltage or ...
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WO/2011/018527A2 |
The present invention relates to an asynchronous generator system for a wind turbine, and a wind turbine having such a system, and the method for operating and starting up such a wind turbine. The asynchronous generator system is thereby...
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WO/2011/016278A1 |
Even when the frequency of an electric power system suddenly varies, the electric power system is stable. Disclosed is a wind-power generation device (1) comprised of a rotor (7) rotated by wind power, a power generator (5) driven by the...
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WO/2011/015105A1 |
A protection device and a protection method for a through power network fault of a double-fed induction generator. The protection device includes a controller (70) and a crowbar circuit (100). The controller is connected to a generator-s...
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WO/2011/011358A2 |
A system and method for providing a constant output from a variable flow input comprises a liquid flow energy input, for example, air or water for driving a constant speed generator. An inner and outer cam assembly is controlled by a con...
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WO/2011/010493A1 |
Provided is a vehicular power supply system capable of preventing a reduction in power supply capacity due to a discharge of a main power supply, preventing large currents from being supplied from the main power supply to a capacitor at ...
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WO/2011/011018A1 |
A vertical, Savonius type wind turbine with an asynchronous induction generator. The turbine is lightweight, requires little maintenance, assembles quickly and easily, connects to any existing structure, occupies a minimum amount of spac...
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WO/2011/006797A1 |
Practical operation of a free piston engine requires compensation of the vibrating masses, because otherwise severe vibrations can occur due to the forces arising in the combustion process, which can lead to damage to the free piston eng...
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WO/2011/008637A2 |
A wind farm (10) may include a plurality of variable speed wind turbines (12, 14, 16). A centralized controller (50) may be configured to selectively adjust a respective electrical output power from each of the wind turbines at least dur...
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WO/2011/008350A2 |
A method of controlling an engine-driven, electrical generator is provided. The generator generates an output voltage at a frequency with the engine running at an operating speed. The method includes the steps of connecting the generator...
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WO/2011/001609A1 |
The rate of increase of a charge voltage applied to a rechargeable battery is controlled by imposing a limit thereon so as to prevent a large current from flowing through a rechargeable battery or prevent abnormal heat generation in the ...
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WO/2011/001783A1 |
Disclosed is a power generation system in which system linkage is achieved by connecting in parallel an engine generator system, an external power source system and a capacitor. The power generation system can be constituted conventional...
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WO/2011/001606A1 |
A generator is connected to a first terminal of a DC/DC converter and a battery unit is connected to a second terminal. An output voltage detection circuit is connected to the generator and the DC/DC converter and output voltage detectio...
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WO/2010/148062A2 |
A wind turbine generator controller suitable for off-grid application and a method of controlling a wind turbine generator. A generator speed signal indicative of power production potential and a load signal indicative of power being dra...
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WO/2010/146854A1 |
A hybrid electric power source device for a crane and a method for controlling a hybrid electric power source device for a crane which are capable of preventing the fuel consumption of an engine generator from deteriorating even when a l...
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WO/2010/142486A1 |
The invention relates to an assembly, comprising an electric generator (2) and a steam turbine (1) and an excitation device, wherein the excitation device is designed such that during nominal operation (N) the auxiliary excitation machin...
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WO/2010/139094A1 |
A circuit integration chip (4) for a vehicle generator (54) includes a rectifier unit (40) and a voltage regulator unit (42). The rectifier unit (40) is provided with a metal oxide semiconductor field effect transistor (MOSFET) rectifyin...
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WO/2010/137710A1 |
Provided is a wind power generation control device that controls a wind power generator that uses wind turbine blades having a fixed pitch angle. Said control device measures an output current and output voltage being outputted by the wi...
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WO/2010/136876A1 |
A scheme for synchronous generator protection is provided. Based on generator input and transformer output phase information, along with the energy function concept, the scheme for synchronous generator protection provides early detectio...
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WO/2010/134994A1 |
A technique for providing electric power to an electric power utility grid includes driving an electric power alternator coupled to the grid with a spark-ignited internal combustion engine; detecting a change in electrical loading of the...
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WO/2010/135197A1 |
An improved Magnus effect energy harvester device, intended to harvest energy from slow-moving fluids and gases by transducing the Magnus side forces into a desired form of energy. In this improvement, the surfaces of rotating cylinders ...
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WO/2010/131644A1 |
Provided is a control device for hybrid work machinery, whereby the degree of freedom in disposing necessary components is increased and the size of the hybrid work machinery is decreased. A first power conversion unit (14) is connected ...
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WO/2010/129886A1 |
A generator is provided including a rotatable pressure vessel with an inner and outer surface. Electromagnets are disposed on the inner surface of the pressure vessel. A biasing structure is configured to rotate within, and independently...
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WO/2010/126408A1 |
The invention relates to a device for generating electric energy, It includes a synchronous generator with permanent magnets. The rotor is connected to a mechanical power source of varying velocity. The device has electric connection mea...
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WO/2010/125687A1 |
A power generating device wherein the voltage of a power system dropped by a system fault or the like is reliably and rapidly restored to a reference voltage. The power generating device is provided with a generator connected to a power...
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WO/2010/118766A1 |
There is described a method for controlling the output of a tidal hydroelectric turbine generator (10) from a remote location, without the need for control circuitry to be housed local to the generator. The rotational speed of the turbin...
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WO/2010/119673A1 |
Provided is a power-generation control system, wherein; fluctuations in the rotating velocity during combustion strokes are suppressed, in a power-generation control device that controls the power generation of a generator driven by bein...
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WO/2010/118777A1 |
The present invention uses natural, renewable energy sources to activate a torque driven servo permanent magnet generator (servo-PMG) (2) by generating a movement (e.g., rotational) of the permanent magnets relative to the windings of sa...
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WO/2010/119057A1 |
A method for supplying outside energy to an onboard electrical power network of a ship, a ship with such an outside energy supply and a retrofitting method for said outside supply. To supply outside energy to a ship's onboard electrical ...
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WO/2010/114771A1 |
A continuously variable transmission ratio device with optimized system efficiency by maximizing power flows through the primary power flow paths. The device is constructed from more than one fixed gear ratio device and controlled via a ...
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WO/2010/114030A1 |
A hybrid type working machine having a supercharger, in which overload to the engine is suppressed. The hybrid type working machine (1) comprises an engine (11); a supercharger (42); a motor generator (12) that generates electricity with...
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WO/2010/108342A1 |
An excitation control system (1) for a marine diesel brushless doubly fed shaft generator (14) and the control method thereof. The control system (1) is connected with a power winding (15), a control winding (16) and a rotary encoder (17...
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WO/2010/103304A1 |
The present invention relates to electricity generating equipment, particularly off-shore generators for generating electricity from tidal streams, marine currents or wave motion. In a generator (101) according to one embodiment, each th...
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WO/2010/102720A1 |
The invention relates to a method for operating an underwater power station comprising a water turbine for absorbing kinetic energy from a water current; an electrical generator comprising converter feeding, wherein the generator rotor t...
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WO/2010/098837A1 |
A high power density generator includes a rotor assembly, a rectifier assembly, and a cooling assembly configured to provide high electrical output power while retaining a small profile. The rotor assembly includes one or more rings conf...
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WO/2010/095240A1 |
Provided is a wind power generating apparatus capable of running an accessory continuously even when a system accident occurs. The wind power generating apparatus comprises an accessory breaker (40) disposed on a power line connecting an...
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WO/2010/095248A1 |
A wind driven generator wherein an increase in torque occurring when a system voltage is restored is suppressed to reduce a load applied to devices by the torque. The wind driven generator comprises a blade control section (22) for contr...
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WO/2010/094818A1 |
The invention relates to a rapid de-excitation system for synchronous machines (1) with indirect excitation by means of an excitation machine (2) and a rotating rectifier bridge (8), including: a de-excitation impedance (10) connected be...
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WO/2010/094814A1 |
The invention relates to a method for powering a wind turbine following a power grid failure. After the presence of grid power has been once again detected, the Grid Connection Control System (SCCR) is then powered by an Uninterrupted Po...
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WO/2010/086415A1 |
The present invention addresses the problem of avoiding that wind turbine voltage levels within a wind power plant do not exceed predetermined overvoltage and/or undervoltage protection levels. In particular, the present invention relate...
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WO/2010/086032A2 |
The invention relates to a power generation system, comprising a power generation unit operable to supply electrical power to an utility system; a synchronous machine coupled to the utility system; a grid measurement device arranged for ...
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WO/2010/087364A1 |
A hybrid working machine wherein an electric generator driven by an engine charges an electric storage unit and wherein an electric power from the electric storage unit is used to drive electric loads. The hybrid working machine comprise...
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WO/2010/088307A1 |
A vehicle energy harvester including a subunit having an upper surface forming a roadway surface; a vehicle activated treadle on the subunit, the vehicle activated treadle moveable between a first position in which an upper surface of th...
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WO/2010/084256A1 |
The invention relates to an alternator (10) that comprises a multiple-phase electric source (12), a rectifier bridge (16) including switches in the form of transistors, at least one switch being connected to each of the phases, each swit...
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