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Matches 251 - 300 out of 6,873

Document Document Title
WO/2013/112609A1
An apparatus for switch wear leveling includes a switching module 202 that controls switching for two or more pairs of switches in a switching power converter 104, based on a duty cycle control technique and closes and opens each switch ...  
WO/2013/104582A2
The invention relates to a method of control implemented in a power converter and which makes it possible to determine the angles (θ1, θ2,) of the rotors (R1, R2) of two permanent-magnet synchronous electric motors (Mot1, Mot2) connect...  
WO/2013/104043A1
The present invention relates to electric energy generation equipment comprising a basic circuit formed by a rectifier (10), for example, an AC/DC converter connected in series to an inverter (12), for example, a DC/AC converter, and a b...  
WO/2013/097862A3
A wind turbine generator is disclosed herein. In a described embodiment, the wind turbine generator comprises an electrical generator 101 configured to generate AC signals, a plurality of power converters 110,112,111 operated by a gating...  
WO/2013/098844A3
This invention relates to electric-power generation system from multiple sources like generator windings 10,20,30. Excitation to windings is controlled by controller 16,26,36, which generates appropriate switching-pattern based on power ...  
WO/2013/095757A1
Embodiments described herein provide a power delivery system, as well as a method of configuring the power delivery system. The power delivery system includes two or more rectifiers electrically coupled to an AC power source and configur...  
WO/2013/090845A3
In at least one embodiment, an electronic system and method includes a controller to control a switching power converter in at least two different modes of operation depending on whether the controller detects a dimmer or not and/or whet...  
WO/2013/090852A2
In at least one embodiment, an electronic system adapts current control timing for half line cycle of a phase-cut input voltage and responsively controls a dimmer current in a power converter system. The adaptive current control time and...  
WO/2013/090112A2
A system and method for detecting input phase loss in an adjustable speed drive (ASD) includes an input unit to detect operating data from the ASD. The operating data includes a DC link current of the ASD. The system also includes a stat...  
WO/2013/090852A3
In at least one embodiment, an electronic system adapts current control timing for half line cycle of a phase-cut input voltage and responsively controls a dimmer current in a power converter system. The adaptive current control time and...  
WO/2013/083761A3
The invention relates to an asynchronous motor unit comprising a frequency converter for regulating the asynchronous motor (7). The frequency converter comprises an input‑side, uncontrolled bridge rectifier (2), a DC voltage intermedia...  
WO/2013/085393A3
There is described an apparatus (2) for transferring electrical power to a rotating shaft (13, 43), the apparatus (2) comprising : - a first winding (21) in a stationary part of the apparatus (2) around the shaft (13, 43); - a second win...  
WO/2013/083761A2
The invention relates to an asynchronous motor unit comprising a frequency converter for regulating the asynchronous motor (7). The frequency converter comprises an input‑side, uncontrolled bridge rectifier (2), a DC voltage intermedia...  
WO/2013/082860A1
An onshore power system for a wharf ship, comprising a high voltage variable frequency power supply device (1), a high voltage junction box (2), a high voltage cable reel (3) and a shipborne transformer substation (4); the high voltage v...  
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...  

Matches 251 - 300 out of 6,873