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Matches 601 - 650 out of 7,475

Document Document Title
WO/2013/042266A1
This electric apparatus is provided with a switching power supply, a rectifying circuit, a pair of capacitive elements, and a load. The switching power supply has inputted thereto a direct current power supply voltage or an alternating c...  
WO/2013/041737A1
The invention relates to an electric power converter method and system with at least two converter units (14), which includes a control means (12) that establishes the maximum output current of the operational converter modules, as well ...  
WO/2013/039404A1
The invention provides a device for operative connection between a subsea step out cable far end and subsea loads such as pumps, compressors and control systems, distinctive in that the device is a rotating frequency stepper device, more...  
WO/2013/037400A1
A dual mode voltage source converter (30) comprises first and second terminals (32,34) for connection in use to a first network (44a); at least one converter limb (36) extending between the first and second terminals (32,34) and having f...  
WO/2013/039415A1
The invention relates to the field of electrical engineering and is intended in particular for increasing reactive power and converting reactive power into active power. The technical result addressed by the invention consists in increas...  
WO/2013/035782A1
A power conversion device comprises a conversion circuit having bidirectionally switchable multiple-pair switching elements connected to each phase and converting an input AC power to an AC power. A first switching time is calculated tha...  
WO/2013/035783A1
A power conversion device comprises a conversion circuit having multiple-pair switching elements connected to each phase and converting an input AC power to an AC power. A first switching time is calculated that is the time required for:...  
WO/2013/035781A1
A power conversion device comprises a conversion circuit having bidirectionally switchable multiple-pair switching elements connected to each phase and converting an input AC power to an AC power. A first switching time is calculated tha...  
WO/2013/033089A1
A power converter circuit is coupled to an AC power input, a backup power input, a first capacitive element and a second capacitive element. The power converter circuit is configured to, in a line mode of operation and during a positive ...  
WO/2011/041425A3
An apparatus including an alternator that is drivable an engine for producing a first AC electric current, a rectifier in electrical communication with the alternator lot producing a DC electric current an inventor in electrical communic...  
WO/2013/026179A1
Systems and methods for suppressing resonances in power converters are provided. A power converter (100) includes an input stage (101) configured to receive alternating current (AC), an output stage (102) configured to output alternating...  
WO/2012/028839A3
A transformer based voltage optimization apparatus (201) configured for use as a component of an electrical circuit that comprises a load (202) comprises a first transformer arrangement (203) specifically configured with means to transfo...  
WO/2013/026220A1
An inverter system control method and device, and an inverter system. The control method includes: detecting parameters of a transformer primary side (101), calculating an equivalent impedance voltage drop of the transformer according to...  
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/2013/020998A2
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/2013/020544A1
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/2013/013850A2
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/2013/012418A1
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/2011/160642A3
In accordance with the present inventive concept, there is provided a method for controlling a converter arrangement connected to a DC link, the arrangement comprising a converter branch for a respective phase of the converter, the conve...  
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/2013/006068A1
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/2012/045666A3
A power supply converter unit is disclosed, in particular for an electrostatic precipitator, converting the frequency of alternating input supply (1) to high frequency alternating output (Ua, Ub) by rectifying the alternating input suppl...  
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/2012/169987A1
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/2011/134057A8
Provided are methods, circuits, and systems for obtaining power from a power generator such as a photovoltaic cell or a fuel cell. The methods, circuits, and systems comprise converting substantially DC output power from the power genera...  
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/2012/123365A3
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/2012/128930A3
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/2012/150962A1
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/2012/078537A3
A control system for regulating a bus voltage used to power an electric shovel. The system includes a controller for controlling motions of the shovel and for providing a measurement of bus voltage of a bus. The system also includes a sh...  
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/2012/084946A3
There is proposed an electrical supply generator of the chopped type (300) for low‑voltage semi‑alternating loads intended to be powered by an alternating voltage, the generator comprising a full-wave rectifier block (33) linked acro...  
WO/2012/084389A3
The invention relates to a power converter comprising several output phases (U, V, W) connected to an electric load and also comprising a filtering device connected to its output phases, the filtering device comprising a common‑mode in...  
WO/2012/013329A3
The invention relates to a current converter of the forward converter type for converting a three-phase primary voltage (U1, U2, U3) into a plurality of secondary voltages (ud1... udn), having a magnetic intermediate circuit that compris...  
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/2011/154196A3
The invention relates to a shaft-driven generator system having a shaft-driven generator (18). According to the invention, a voltage source inverter (42) having a network-side inductance is provided, wherein said voltage source inverter ...  
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...  

Matches 601 - 650 out of 7,475