Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 251 - 300 out of 6,750

Document Document Title
WO/2013/024034A3
A control system for controlling an operation of a hydroelectric turbine. The control system comprises a converter system to convert AC power, supplied by a generator connected to the turbine, and having a voltage and frequency that is a...  
WO/2013/024039A3
A hydroelectric turbine array system comprises an array of turbine systems and a supervisory controller. Each turbine system of the array comprises a hydroelectric turbine and a control system. The control system includes a converter sys...  
WO/2013/024034A2
A control system for controlling an operation of a hydroelectric turbine. The control system comprises a converter system to convert AC power, supplied by a generator connected to the turbine, and having a voltage and frequency that is a...  
WO/2013/023981A1
The invention relates to a method for operating a converter circuit (4) for converting multi-phase input-side phase voltages (Uu, Uv, Uw) and multi-phase input-side phase currents (Iu, Iv, Iw) into multi-phase output-side phase voltages ...  
WO/2013/024037A3
A control system for controlling an operation of a hydroelectric turbine. The control system comprises a converter system to convert AC power, supplied by a generator connected to the turbine, and having a voltage and frequency that is a...  
WO/2013/020998A2
It is described an arrangement for providing an AC current to a load for direct electrical heating, the arrangement comprising a AC-DC-AC converter cell (133, 433, 533, 633, 733), the converter cell having at least two converter input te...  
WO/2013/020998A3
It is described an arrangement for providing an AC current to a load for direct electrical heating, the arrangement comprising a AC-DC-AC converter cell (133, 433, 533, 633, 733), the converter cell having at least two converter input te...  
WO/2013/020544A1
The invention relates to a method for operating an electric motor in a generator mode, said electric motor being connected to at least three phases of a power supply network. An energy that is to be fed back into the power supply network...  
WO/2013/021205A3
The invention relates to the generation of electricity from flowing fluid and in the preferred embodiment to a horizontal axis turbine and generator assembly. The present invention is applicable to water turbines and the invention is des...  
WO/2013/013850A2
The invention relates to a switch mode power supply (9) which comprises a control for controlling a switch element and is connected to a DC link of a converter. Said switch mode power supply (9) comprises a startup-delay so that the cont...  
WO/2013/013850A3
The invention relates to a switch mode power supply (9), to a method for operating said power supply (9) and to the use of the thereof. Said switch mode power supply (9) comprises a control for controlling a control element and which is ...  
WO/2013/014334A3
The invention relates to an elevator system and also to an electricity supply device (1, 2, 3) for supplying electric power in the elevator system. The electricity supply device (1, 2, 3) comprises a controllable power output stage (4, 5...  
WO/2013/012418A1
A method and apparatus for power conversion. In one embodiment, an apparatus comprises a first means for converting a first current to a second current, wherein the first current or the second current is AC current having at least two ph...  
WO/2013/007783A2
The invention relates to a method for operating a first and a second electrical load in an alternating current network. The method can be operated in an optional first operating mode, in which the positive and negative half waves for eac...  
WO/2013/007268A3
According to an embodiment, a power generation system is provided comprising a power generator; a plurality of converter modules, each converter module having a DC link, wherein the DC link of each converter module is connected to the DC...  
WO/2013/007836A3
The invention relates to a method for controlling a cycloconverter (20), which is designed to a connect a first three-line network (30) to a second three-line network (31), wherein the cycloconverter (20) has six converter branches (32, ...  
WO/2013/007749A1
A wind power station comprises a wind turbine a generator and a frequency converter comprising a generator converter connected to the generator, an intermediate circuit connected to the generator converter and a grid converter connected ...  
WO/2013/007783A3
The invention relates to a method for operating a first and a second electrical load in an alternating current network. The method can be operated in an optional first operating mode, in which the positive and negative half waves for eac...  
WO/2013/006068A1
An inductively coupled power transfer receiver including a tunable circuit and a power supply circuit. The tunable circuit includes a power receiving coil in series with a first capacitance and first variable impedance connected in paral...  
WO/2013/001496A2
A wind turbine for generating and feeding electric energy to an electric power grid, the wind turbine (1) having a blade assembly (5); an electric machine (6) having a stator (10), and a rotor (11) connected to the blade assembly (5) to ...  
WO/2013/000034A1
A system for reducing power consumption in a power supply circuit including: a transformer including: a core; a first winding including a first end and a second end of a first wire wound on the core; a second winding including a first en...  
WO/2013/001496A3
A wind turbine for generating and feeding electric energy to an electric power grid, the wind turbine (1) having a blade assembly (5); an electric machine (6) having a stator (10), and a rotor (11) connected to the blade assembly (5) to ...  
WO/2012/176327A1
The purpose of the present invention is to provide a power conversion device having the reduced numbers of reactors and IGBTs and being capable of obtaining variable amplitude and variable frequency power with a simple configuration and ...  
WO/2012/175295A1
Short circuit safe rectifier stage for a subsea power grid It is described a rectifier stage (251) for converting an input AC voltage to an output voltage, the rectifier stage comprising: a first AC input terminal (255); a second AC inpu...  
WO/2012/175294A3
Rectifier stage for a subsea power grid It is described a rectifier stage (451) for converting an input AC voltage to an output voltage, the rectifier stage comprising: a first AC input terminal (455); a second AC input terminal (457), w...  
WO/2012/177498A3
A variable frequency drive system including an alternating current electrical power source, an alternating current motor and a variable frequency drive connected to the power source and the motor. The variable frequency drive provides el...  
WO/2012/169987A1
The method of forming of alternating voltages with the preset ratio, which is used in the forming of the reference alternating voltage U0 and the adjustable alternating voltage U1, the value of which is in the preset ratio to the referen...  
WO/2012/165103A1
A power conversion device (3) that directly converts polyphase AC power to AC power. A conversion circuit has a plurality of first switching elements (311, 313, 315) and a plurality of second switching elements (312, 314, 316) that are c...  
WO/2012/165104A1
A power conversion device (3) that directly converts polyphase AC power to AC power. A conversion circuit has a plurality of switching elements (311, 313, 315, 312, 314, 316) that are connected to the phases (R, S, T) of the aforemention...  
WO/2012/165099A1
A power conversion device (3) that directly converts polyphase AC power to AC power. A conversion circuit has a plurality of first switching elements (311, 313, 315) and a plurality of second switching elements (312, 314, 316) that are c...  
WO/2012/165102A1
A power converter (3) that directly converts polyphase AC power to AC power is provided. A converter circuit has a plurality of first switching elements (311, 313, 315) that are connected to each phase (R, S, T) of the polyphase AC power...  
WO/2012/165100A1
A power conversion device (3) that directly converts polyphase AC power to AC power is disclosed. A conversion circuit has a plurality of first switching elements (311, 313, 315) and a plurality of second switching elements (312, 314, 31...  
WO/2012/165101A1
A power conversion device (3) that directly converts polyphase AC power to AC power is disclosed. A conversion circuit has a plurality of first switching elements (311, 313, 315) and a plurality of second switching elements (312, 314, 31...  
WO/2012/162237A1
An apparatus and system for power conversion. In one embodiment, the apparatus comprises a transformer having a primary winding and a plurality of secondary windings; and a cyclo-converter comprising a plurality of switch pairs for conve...  
WO/2012/160615A1
This AC conversion circuit converts a single-phase AC input voltage with a frequency f0 into a three-phase AC output voltage with a frequency f1, which is lower than the frequency f0. This AC conversion circuit is provided with: a switch...  
WO/2012/160017A3
The invention relates to a voltage setting device, comprising at least one multi-step voltage output (34), at least one power converter unit (30), which has at least one first power element (46) that forms at least a part of a power conv...  
WO/2012/150962A1
Disclosed is apparatus and methodology for providing a capacitive voltage divider power supply. A plurality of full wave rectifiers each including a capacitor are coupled in series so that an applied AC source charges the capacitors in s...  
WO/2012/143449A3
The invention relates to a matrix inverter (MU), which is connected to a first and a second multi-phase A.C. voltage network (N1, N2). First inductive circuit elements (Su1, Sv1, Sw1) are respectively connected to the first A.C. voltage ...  
WO/2012/141609A1
The invention relates to electrical engineering and can be used for measuring an AC high voltage in sulfur hexafluoride unitized distribution devices (SF6-UDDs). The technical result of the invention consists in increasing the accuracy f...  
WO/2012/137210A2
An uninterruptible power supply device, and method of use thereof, including a multiple-input source AC converter for receiving an AC input voltage and a DC input voltage, an inverter including a combiner module for combining the input p...  
WO/2012/136043A1
A method for controlling an auxiliary source circuit of a two-wire dimmer. The auxiliary source circuit comprises: an auxiliary source capacitor (20) and a cutoff switch (30) constituting a series branch, and a chopper switch (10) parall...  
WO/2012/136042A1
An auxiliary power supply circuit of a two wire dimmer, comprising: an auxiliary source capacitor (20) and a cutoff switch (30) constituting a series branch, a chopper switch (10) parallel-connected to the series branch, and a control de...  
WO/2012/129844A1
An intelligent synthesis system for developing and testing a high-voltage frequency converter and an establishment method thereof relate to electric control and test technology fields. The system comprises a high-voltage frequency conver...  
WO/2012/126515A1
The invention relates to an electrical installation having a matrix converter (ΜU) and to a method for operating same. The matrix converter (ΜU) comprises a plurality of input terminals (E1, E2, E3), a plurality of outlet terminals (A1...  
WO/2012/128930A3
An AC transformer having a cylindrical core configurable for single or polyphase power input and/or output transformer applications. The transformer core structure is capable of being configured to provide for single or polyphase inputs ...  
WO/2012/122873A1
A shore-based variable frequency power supply system in port comprises a variable frequency power supply (C), a port high-voltage substation (A) and a ship power system (H). An input terminal of the variable frequency power supply is con...  
WO/2012/122870A1
A test power supply for a transformer comprises a high voltage frequency conversion test power supply (1), a middle boosting transformer (2), and a reactive compensation device. The high voltage frequency conversion test power supply (1)...  
WO/2012/122874A1
An H-bridge cascaded multi-level voltage sag generator (VSG) based on an insulated gate bipolar transistor (IGBT). The device is an energy feedback four-quadrant converter and is capable of implementing bi-directional flow of energy. An ...  
WO/2012/123365A3
Disclosed in the present invention are a power generation unit driver, a power generation unit and energy output equipment in a power grid. The power generation unit driver includes a drive controller for generating a drive signal accord...  
WO/2012/123663A1
The invention relates to a generating method implemented by a generating module (20) of an electrical network (1) of an aircraft, said electrical network (1) comprising a supply line (3) supplied by said generating module (20), a continu...  

Matches 251 - 300 out of 6,750