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Matches 551 - 600 out of 7,486

Document Document Title
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/2013/043811A3
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/2013/140287A1
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/2013/130054A1
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/2013/120866A1
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/2013/024034A3
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/2013/122581A1
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/2013/024039A3
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/2013/024037A3
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/2013/083761A3
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/2013/116374A1
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/2013/112609A1
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/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/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/2013/064229A3
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/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/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/2013/090852A2
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/2013/083761A2
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/2013/078763A1
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/2013/013850A3
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/2013/081995A2
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/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/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/2012/104232A3
The invention relates to a stepping switch for voltage control, comprising semiconductor switch elements on a variable transformer having associated regulating windings. The stepping switch has a modular design, wherein each module compr...  
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/2013/001496A3
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/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/2013/064229A2
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...  

Matches 551 - 600 out of 7,486