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Matches 251 - 300 out of 7,002

Document Document Title
WO/2014/007803A1
An electrical ballast system having a toroidal current transformer having a core with a gap of predetermined dimensions, a primary winding, and a secondary winding. The primary winding is connected in series to a lamp load circuit and th...  
WO/2014/005639A1
The invention relates to a device (100) for a three-phase load (200). In order to provide an improved device (100) for a three-phase load (200), which device can be constructed in an in particular space-saving and cost-saving manner, the...  
WO/2014/000490A1
The present invention provides a five-level power converter and its controlling method. The five-level power converter comprises an inverter and at least one rectifier. Said rectifier comprises at least one rectify-controlling circuit an...  
WO/2014/004289A1
A three phase full resonant cyclo-converter (95) suitable for converting a three phase AC supply to a DC output. In one embodiment the cyclo-converter consists of two half bridge cyclo-converters (96,97) driving a resonant circuit. The m...  
WO/2014/001402A1
Constant current regulator (10) for supplying a series circuit (9) of a lighting installation with an output electrical power corresponding to a predetermined output power, comprising a plurality of modules (13) electrically connectable ...  
WO/2013/189952A3
The invention relates to a reversible matrix converter circuit with n levels per phase comprising n conversion arms exhibiting on one side n ends for generating or receiving respectively n intermediate DC voltage levels, and exhibiting o...  
WO/2013/189952A2
The invention relates to a reversible matrix converter circuit with n levels per phase comprising n conversion arms exhibiting on one side n ends for generating or receiving respectively n intermediate DC voltage levels, and exhibiting o...  
WO/2013/186065A1
The invention relates to a method for estimating the value of a braking resistor (Rf) used in a power converter connected to an electric motor (M). The power converter comprises a braking cell (CelF) connected to the first power supply l...  
WO/2013/185847A1
The present invention relates to a power converter adapted to convert at least one AC input voltage into an AC output voltage, a power converter (2) comprising: an input signal conversion circuit (6) having half-bridge connected switches...  
WO/2013/179463A1
This power conversion apparatus is provided with a plurality of power conversion circuits (1), each of which is configured of switching elements (4). The power conversion apparatus is also provided with: direct current conductive bodies ...  
WO/2013/178505A1
The present invention relates to a half bridge induction heating generator, comprising at least one power terminal (10) provided for a direct current voltage, at least one ground terminal (12), and four capacitors (C2, C3, C4, C5) formin...  
WO/2013/171800A1
A first period in which a voltage Vin is equal to or greater than a positive first reference voltage, a second period in which the voltage Vin is equal to or less than a negative reference voltage, and a third period in which the voltage...  
WO/2013/166870A1
A multilevel inverter comprises a first boost apparatus (102) having an input coupled to a positive dc bus and a second boost apparatus 106) having an input coupled to a negative dc bus. The multilevel inverter further comprises a first ...  
WO/2013/163863A1
Provided is an ECM motor controller adapting for various frequencies and power supply voltages. The controller comprises a motor microprocessor, an inverter, a signal detection and feedback circuit, as well as a power supply. The power s...  
WO/2013/158605A1
A dual function solid state power converter operable from a three phase AC input current simultaneously provides; an AC or DC output current on an aircraft power cable which extends from a stowed position to provide ground power to a par...  
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...  

Matches 251 - 300 out of 7,002