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Matches 251 - 300 out of 6,973

Document Document Title
WO/2013/153571A1
The purpose of the invention is to provide a power conversion device capable of supplying a constant voltage to a load against a wide range of voltage variation of an AC power supply while avoiding size increase, cost increase, and effic...  
WO/2013/152910A1
The invention relates to a control transformer, designed as a phase-shifting transformer, wherein semiconductor switching elements are provided for each phase on a control winding (2, W1, W2, W3) having a plurality of partial windings (W...  
WO/2013/149458A1
A UPS power source based on a phase-shifting auto-transformer and dual 6-pulse rectifiers comprises a 12-pulse phase-shifting auto-transformer T1, two paths of output devices, energy storage devices, bypass static switch devices and char...  
WO/2013/150572A1
Provided is a power conversion device capable of supplying a fixed voltage to a load even when the voltage of a three-phase AC power supply fluctuates. A series circuit comprising a switching element (Q1) and a switching element (Q2), an...  
WO/2013/147933A1
An apparatus provides electrical power to a ship in port. A first interface interconnects the apparatus with a power grid of the port receiving an input power signal. A second interface interconnects the apparatus with an electrical powe...  
WO/2013/148221A1
A load control device adapted to control the amount of power provided to an electrical load utilizing a phase control signal that operates in a reverse phase control mode, a center phase control mode, and a forward phase control mode. Th...  
WO/2013/145854A1
Provided is an electrical power conversion apparatus that suppresses the increase in leakage current when reverse voltage is applied to a reverse blocking insulated gate bipolar transistor so as to reduce loss caused by the leakage curre...  
WO/2013/143623A1
The invention relates to a method for operating a converter circuit (1). The controllable power semiconductor switches of the rectifier unit (2) of the converter circuit (1) are controlled using a rectifier switch signal (SG), and the co...  
WO/2013/146560A1
Provided is a highly efficient frequency conversion device having high reliability and little electromagnetic noise. The frequency conversion device is provided with: a primary winding (12) in which a plurality of windings having a multi...  
WO/2013/140287A1
A low-voltage power supply apparatus (900A) providing power to an neutral-less two-wire electronically controlled switch, including a first power supply (901) having a first DC bus (910+, 910-) electronically coupled to a rectifier bridg...  
WO/2013/136772A1
The present invention provides a copper wire rod softening device which can stably soften a copper wire over a broad range from low speed area to high speed area. The copper wire (2) is guided to first, second and third electrode sheaves...  
WO/2013/134994A1
A naturally freewheeling alternating current chopper main circuit structure comprising, connected to a single-phase circuit or to a three-phase circuit, an alternating current chopper main circuit (1) and an inductive load (2). The alter...  
WO/2013/137518A1
A bidirectional high-frequency resonator and a bidirectional transformer using the same are disclosed. The disclosed bidirectional transformer comprises: a bidirectional high-frequency transformer for converting between a first high-volt...  
WO/2013/136378A1
Provided is a power conversion apparatus which can supply a constant voltage to a load even if the voltage of an alternating current power supply is fluctuated. The power conversion apparatus is provided with a power conversion circuit w...  
WO/2013/132538A1
Provided is a power conversion method that is excellent in efficiency and reliability and used for converting a single-phase AC voltage to a two-phase AC voltage. An input voltage (in), which is a single-phase AC voltage, is received, an...  
WO/2013/132545A1
Provided is a power converter that is capable of supplying a constant voltage to a load even if the voltage of an AC power source fluctuates. The power converter is equipped with a power conversion circuit comprising the following: an in...  
WO/2013/131400A1
Disclosed are an electric locomotive traction converter and electric drive system, wherein a main circuit of the traction converter comprises at least one set of main conversion modules, each set of main conversion modules comprising at ...  
WO/2013/128991A1
The present invention is a power conversion device that is capable of suppressing an increase in DC voltage due to regenerated current. An inverter (3) converts DC voltage applied between a first and second power supply line (LH, LL) to ...  
WO/2013/127910A3
The invention relates to a power-supply system comprising at least one power-supply module 1 for supplying power to at least one electrical appliance 2, and generating, from a voltage Vl and a current Il, from a high-voltage line 4, an i...  
WO/2013/130054A1
An uninterruptible power supply includes a first power converter, a second power converter, and a DC-to-AC converter coupled to the first power converter and the second power converter. The first power converter includes a first AC-to-DC...  
WO/2013/128982A1
The present invention is an indirect matrix converter that is capable of improving the precision of current detection. A converter (1) receives the input of an alternating-current voltage, converts the alternating-current voltage to a di...  
WO/2013/124374A8
An AC-AC converter system (500) comprises transformers and converter units (540a, b) on primary and secondary sides (550a, b) of the system, respectively. The converter system is connected to first and second AC networks (550a, b) and th...  
WO/2013/124374A3
An AC-AC converter system (500) comprises transformers and converter units (540a, b) on primary and secondary sides (550a, b) of the system, respectively. The converter sytem is connected to first and second AC networks (550a, b) and the...  
WO/2013/120866A1
Transformer arrangement (14) for secondary distribution network voltage supply, having: - a transformer (20) for converting a primary voltage in the form of a medium voltage in the range of from 1 kV to 50 kV into a seconary voltage whic...  
WO/2013/122581A1
An uninterruptible power supply system (UPS) includes an interconnect circuit configured to receive three-phase AC input power from an AC power source and a plurality of UPS subsystems each coupled to the interconnect circuit. A first UP...  
WO/2013/117304A3
The invention relates to a drive system with an energy accumulator and a method for operating a drive system, wherein an inverter supplies an electric motor, the inverter is supplied from a unipolar DC link voltage, an energy accumulator...  
WO/2013/116374A1
The present disclosure is directed to an alternating current (AC) to AC converter circuit for independently adjusting a current and voltage to adjust a light output of a light operating on AC power. In one embodiment, the AC to AC conver...  
WO/2013/110273A1
A control system for one or more power stacks in a power converter is disclosed, each power stack comprising a plurality of electronic switches, said control system comprising one or more controllers, wherein a distributed clock signal f...  
WO/2013/110282A3
A control system for one or more power stacks in a power converter is disclosed, each power stack comprising a plurality of electronic switches, said control system comprising one or more controllers, wherein a distributed clock signal f...  
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...  

Matches 251 - 300 out of 6,973