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Patent Searching and Data


Matches 251 - 300 out of 6,854

Document Document Title
WO/2013/080744A1
A matrix converter according to an embodiment is equipped with: a power conversion unit which has multiple bi-directional switches; a control unit for controlling the power conversion unit; and a current detection unit for detecting a cu...  
WO/2013/079739A1
The invention relates to a system and method for reducing losses in parallel transformer systems in distribution centres. The method comprises: measuring the total load capacity SL of the parallel transformers (10, 10') of the distributi...  
WO/2013/079170A1
A method is specified for exchanging power between a multi-phase AC voltage system (10) and an electrical subscriber (4, 6, 8) via a unipolar voltage intermediate circuit (16), wherein a multi-phase inverter (18) connected to the AC volt...  
WO/2013/079962A2
A voltage optimisation apparatus for controlling output voltage of an alternating current electricity supply is disclosed. The apparatus includes input and output terminals and a transformer reducing or increasing the voltage to an optim...  
WO/2013/079962A3
A voltage optimisation apparatus (10) for controlling output voltage (38) of an alternating current electricity supply (36) is disclosed. The apparatus includes input (12,14) and output terminals (16,18) and a transformer (24) reducing o...  
WO/2013/078763A1
A high voltage frequency conversion power supply device comprises a high voltage incoming cabinet and a transformer. A high voltage cable enters the high voltage incoming cabinet, and leaves same and enters the transformer. The high volt...  
WO/2013/081995A2
A power supply with a multi-bridge topology configured to provide multiple different bridge topologies during operation. The power supply includes a plurality of half-bridge circuits connected to a controller. The controller can selectiv...  
WO/2013/076937A1
This AC conversion circuit converts a single-phase AC input voltage with a given frequency (f0) to a three-phase AC output voltage with a lower frequency (f1). This AC conversion circuit is provided with the following: a switching unit (...  
WO/2013/071933A3
This invention relates to a method of downscaling idle energy consumption of a transformer having a primary and a secondary side positioned between a linear actuator system connected to the secondary side and an electrical AC supply conn...  
WO/2013/072741A3
An electrical gear (1) is disclosed, configured for supply of electrical drive power to a machinery (2) to be rotated at high speed, such as a subsea motor /pump or a subsea motor/ compressor assembly, the electrical gear comprising a hi...  
WO/2013/074358A1
A power converter includes an active front end (AFE) that is coupled by a dc link stage to a plurality of H-bridge inverters. One or more multi-phase electromagnetic energy conversion devices, such as transformers or electric machines, w...  
WO/2013/072908A1
Method of conversion of high DC voltage to pulsating AC voltage and a converter using the method, wherein AC voltage is generated by a high frequency fixed generator, the voltage is transmitted by capacitive coupling (11, 12, 13, 14) to ...  
WO/2013/074109A2
A monolithic DC to DC converter, provides a semiconductor substrate, a surface FET formed on the semiconductor substrate that modulates currents across a surface of the semiconductor substrate, and a toroidal inductor with a magnetic cor...  
WO/2013/067967A1
A semiconductor electricity converter is provided. The semiconductor electricity converter comprises: an AC input module, for converting an input AC electric energy into a light energy, the AC input module comprising a plurality of semic...  
WO/2013/067800A1
A megawatt direct drive type squirrel-cage asynchronous generator AC-DC-AC wind generation system with a medium-voltage squirrel-cage asynchronous generator as a wind generator comprises a squirrel-cage asynchronous generator, a megawatt...  
WO/2013/070094A3
A method for controlling a converter including a resonant circuit, where the converter is controlled such that control switches are switched into a first state at the occurrence of an event that is related to a dependent variable of the ...  
WO/2013/070094A2
A method for controlling a converter including a resonant circuit, where the converter is controlled such that control switches are switched into a first state at the occurrence of an event that is related to a dependent variable of the ...  
WO/2013/064229A3
The invention relates to a device and a method for applying a voltage to a plurality of silicon rods in a CVD reactor. In each case, a series circuit, in which the silicon rods can be used as resistors, at least one first, at least one s...  
WO/2013/064229A2
The invention relates to a device and a method for applying a voltage to a plurality of silicon rods in a CVD reactor. In each case, a series circuit, in which the silicon rods can be used as resistors, at least one first, at least one s...  
WO/2013/058808A2
In a transformer core and transformer, a wound transformer core is formed from magnetic steel strips that are wound into multiple rings of different widths and arranged to define a ring-like structure having a stepped, substantially circ...  
WO/2013/057399A3
The invention relates to a low DC voltage supply system (100) for at least one electronic communication device (3; 6) in a broadband over power line communication system, further comprising a broadband over power line coupler including a...  
WO/2013/056918A1
The invention relates to a power converter intended to control an electrical load (C) comprising a supply DC bus, a bus capacitor, a pre-charging circuit of the bus capacitor provided with a limiting resistor, a switched-mode power suppl...  
WO/2013/051392A1
This charging device (1A), to which a power conversion apparatus (11, 81, 3, 4, 5, 7, 9) that converts commercial power to DC power has been mounted, is provided with: a core frame (14) that mounts a power conversion apparatus that inclu...  
WO/2013/051475A1
This power converter (3) directly converts polyphase AC power into AC power, and is provided with: a conversion circuit which has multiple first switching means (311, 313, 315) which are connected to the R, S and T phases of the polyphas...  
WO/2013/051476A1
This power converter (3) directly converts polyphase AC power into AC power, and is provided with: a conversion circuit which has multiple first switching means (311, 313, 315) which are connected to the R, S and T phases of the polyphas...  
WO/2013/047236A1
The purpose of the invention is to, when outputting an AC voltage to an inductive load, reduce an effective power pulsation caused by odd-order harmonic components of the current flowing through the load. The modulation factor (k) of an ...  
WO/2013/043811A3
An uninterruptible power supply (UPS) system includes first and second busses, a first switching circuit configured to selectively couple an AC source to the first and second busses and a second switching circuit configured to selectivel...  
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/2013/043974A3
An airplane ground support system includes a multi-voltage power supply (20). This system includes an air conditioning module, a control module (22), and a power supply module which has an A.C. power input, at least one power output, wit...  
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/2013/033801A3
A control method and system is described for home appliances which comprise one electric motor (7) having at least two coils. The coils of the electric motor (7) are combined in series or in parallel due to the input voltage (1) and are ...  
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/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/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/2013/024034A3
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...  

Matches 251 - 300 out of 6,854