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Matches 251 - 300 out of 7,081

Document Document Title
WO/2014/105771A2
A load control device to control current flow to an AC load includes a circuit having line-side switches and floating-neutral side switches, along with a controller connected to the circuit that is programmed to control the circuit so as...  
WO/2014/099897A3
An apparatus includes at least one external source terminal configured to be connected to at least one secondary terminal of a distribution transformer and at least one external load terminal configured to be connected to a load. The app...  
WO/2014/084830A1
According to one aspect, embodiments of the invention provide an uninterruptible power supply (UPS) system comprising an input configured to receive input AC power, an output configured to provide output AC power to a load, a DC power so...  
WO/2014/085543A3
An adapter-converter assembly for use with an electrical outlet is disclosed including a main body having a first, second and third universal female outlets defining first, second and third outlet configurations, and a first male plug de...  
WO/2014/079970A1
The invention relates to a converter system, comprising a rectifier (1) and at least two inverters (2), wherein the rectifier (1) can be supplied with energy by an alternating-current source (3), the rectifier (1) is connected to each of...  
WO/2014/076244A2
An RF transformer for supplying power as part of a tank circuit, comprises: a primary side, having at least one main winding and at least one shorting winding, the at least one main winding being configured to receive an RF input; a seco...  
WO/2014/071720A1
The embodiments of the present invention provide a power-factor correction circuit and a power circuit. The power-factor correction circuit comprises a main correction circuit and a switch module, and the main correction circuit comprise...  
WO/2014/063774A3
The invention relates to a drive arrangement comprising a first intermediate circuit, in particular a direct voltage intermediate circuit, and an inverter which can be fed by the intermediate circuit and which feeds a first motor. Said i...  
WO/2014/062569A2
A flyback converter has a sub-nanofarad capacitor disposed between the primary winding and the secondary winding of a transformer included in the flyback converter. A controller in the flyback converter co-optimizes the switch period and...  
WO/2014/056297A1
A control and regulation arrangement configured to deliver electrical power to an appliance, the arrangement comprising:a housing;an input connection for coupling to a electricity supply;an output connection for coupling to an appliance;...  
WO/2014/044089A1
An on-line uninterrupted power supply topology. A single-phase topology comprises a major loop and an auxiliary loop. A power conversion stage of the major loop includes first to fourth branches connected in parallel between a positive b...  
WO/2014/046012A1
The present invention is a single-phase/three-phase direct conversion device having an improved input amplitude modulation factor. During a first period (T1) during which, when the AC waveform outputted by a single-phase AC power supply ...  
WO/2014/031585A3
A system and method for performing diagnostics in a medium voltage drive. The system includes a power cell (405) and a bypass mechanism. The bypass mechanism is operably connected to(410) output terminals (T1,T2) of the power cell and co...  
WO/2014/031585A2
A system and method for performing diagnostics in a medium voltage drive. The system includes a power cell and a bypass mechanism. The bypass mechanism is operably connected to output terminals of the power cell and configured to create ...  
WO/2014/030202A1
A power converter (1) is equipped with three AC input terminals provided per phase on the three-phase AC input side, a reactor connected to each of the AC input terminals, one AC output terminal provided per phase on the three-phase AC o...  
WO/2014/030259A1
Provided is a voltage control apparatus that can step up the voltage of an inputted polyphase alternating current and stably supply high voltage. The voltage control apparatus (10) is provided with: a zero-crossing detection means (20) t...  
WO/2014/027198A1
A method for determining power consumption reduction and/or energy saving arising from the use of a voltage regulation device (1) is described. The method comprises calculating a power reduction and/or energy saving resulting from use of...  
WO/2014/028866A2
An energy efficient apparatus includes a switching device, a frequency dependent reactive device, and a control element is provided. The switching device is coupled to a source of electrical power and includes a pair of transistors and i...  
WO/2014/020703A1
A matrix converter according to one embodiment comprises a plurality of bidirectional switches arranged between an AC power source and an AC load, and a control unit for controlling the plurality of bidirectional switches. The control un...  
WO/2014/020898A1
In the present invention, soft-switching is maintained for a power converter that is capable of bidirectional power transfer. This power converter is equipped with a phase bridge (1), a phase bridge (2) that is connected in parallel to p...  
WO/2014/016532A3
The present invention concerns an adjustment device intended to equip electrical networks, and more particularly a device (3) for dynamically adjusting the voltage of an electrical network (1) having a first voltage and an electrical net...  
WO/2014/016532A2
The present invention concerns an adjustment device intended to equip electrical networks, and more particularly a device for dynamically adjusting the voltage 3 of an electrical network having a first voltage 1 and an electrical network...  
WO/2014/014912A2
Methods and systems are described for providing a high frequency high voltage source. For example, a power source for use in a particle accelerator, an arc welder or an inductive heater.  
WO/2014/014912A3
Methods and systems are described for providing a high frequency high voltage source. For example, a power source for use in a particle accelerator, an arc welder or an inductive heater.  
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...  

Matches 251 - 300 out of 7,081