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Matches 251 - 300 out of 6,577

Document Document Title
WO/2012/045666A3
A power supply converter unit is disclosed, in particular for an electrostatic precipitator, converting the frequency of alternating input supply (1) to high frequency alternating output (Ua, Ub) by rectifying the alternating input suppl...  
WO/2012/045602A2
The invention relates to a rectifier circuit having a rectifier unit (1), said rectifier unit (1) comprising a plurality of actuatable power semiconductor switches, the DC side thereof being connected to a capacitive energy storage circu...  
WO/2012/041544A1
A power electronic converter (10; 70) is used in high voltage direct current power transmission and reactive power compensation. The power electronic converter (10; 70) comprises at least one converter limb (12, 14; 72) including first a...  
WO/2012/041380A1
A power electronic converter (10) is used in high voltage direct current power transmission and reactive power compensation. The power electronic converter (10) comprises at least one converter limb (12, 14) including first and second te...  
WO/2012/043465A1
Link voltages are measured by enhancing the tolerance and responsiveness to switching noises. A period drt⋅T0 is longer than a period dst⋅T0. Two intervals used by a unit voltage vector (V4) in the period drt⋅T0 are used as a first...  
WO/2012/041147A1
A voltage conversion device comprises a resistor (R) and a transformer primary winding connected to a voltage protection element (D) in parallel wherein the resistor and the transformer primary winding are connected in series, or compris...  
WO/2012/034593A1
The present invention concerns a power supply arrangement (18) for a substation, where this power supply arrangement comprises a group of reactive voltage dividing elements (20, 22, 24) connected to a first AC power line (10) that transp...  
WO/2012/031435A1
A stabilization circuit for electronic transformer driven LED devices. The circuit is provided at an output of an electronic transformer driving circuit, which has a rectifier fed into a feedback-controlled oscillator circuit. An isolati...  
WO/2012/031787A1
The invention relates to a traction converter having a mains-side feed apparatus (2), a load-side self-commutated pulse converter (4) and an auxiliary operation converter (6), wherein this feed apparatus (2) has a multiplicity of primary...  
WO/2012/032196A1
The invention relates to a system that makes it possible to connect or disconnect polyphasic conversion stages (2a, 2b), including at least two back-to-back polyphasic conversion stages (2a, 2b) connected between a rotary electric machin...  
WO/2012/028839A2
A transformer based voltage optimization apparatus (201) configured for use as a component of an electrical circuit that comprises a load (202) comprises a first transformer arrangement (203) specifically configured with means to transfo...  
WO/2012/028839A3
A transformer based voltage optimization apparatus (201) configured for use as a component of an electrical circuit that comprises a load (202) comprises a first transformer arrangement (203) specifically configured with means to transfo...  
WO/2012/024959A1
A control method during zero-crossing operation of bridge arms in an uninterruptible power supply (UPS). The UPS comprises a rectifying bridge arm consisting of a first switching tube (Q1) and a second switching tube (Q2), a midline brid...  
WO/2012/025256A1
The invention relates to a drive system for a battery-operated vehicle. According to the invention, said drive system has a voltage intermediate circuit inverter (2) having two self-commutating converters (16, 18) which, on the DC side, ...  
WO/2012/022823A1
The invention relates to an electricity supply apparatus, an elevator system and a method for limiting the electricity consumption of an elevator system. The electricity supply apparatus (1) according to the invention is fitted to supply...  
WO/2012/020664A1
An indirect matrix converter couples a converter (2) to an inverter (6) via a positive bus line (4p) and a negative bus line (4n). The anode of clamp diode (28u) is connected to the positive bus line (4p), the cathode of clamp diode (28u...  
WO/2012/013329A3
The invention relates to a current converter of the forward converter type for converting a three-phase primary voltage (U1, U2, U3) into a plurality of secondary voltages (ud1... udn), having a magnetic intermediate circuit that compris...  
WO/2012/016119A1
A load control device adapted to be coupled between an AC power source and an electrical load for controlling the power delivered to the load includes a power supply having an energy storage capacitor (C out) and a charge pump circuit (2...  
WO/2012/013329A2
The invention relates to a current converter of the forward converter type for converting a three-phase primary voltage (U1, U2, U3) into a plurality of secondary voltages (ud1... udn), having a magnetic intermediate circuit that compris...  
WO/2012/010067A1
A topological structure for a transformerless high voltage frequency converter, comprising a high voltage charging circuit, an inductor (L1, L2), a rectifier circuit and an inverter circuit. A high voltage power network is directly conne...  
WO/2012/010329A1
A method and a device for igniting silicon rods outside a CVD-reactor for preparing silicon rods for subsequent processing in a CVD-reactor are described. In the method, a silicon rod is disposed inside an ignition device, and a first vo...  
WO/2012/010064A1
An modular multilevel converter (MMC)-based transformerless four-quadrant high-voltage variable-frequency power supply topology. In the power supply topology, the rectification module and conversion module both have modular multilevel to...  
WO/2012/010063A1
An H-bridge based transformerless wind power grid-connected topological structure comprising a wind-powered electric generator, a rectifier module, and an inverter module. The generator generates a low-voltage alternating current (AC) to...  
WO/2012/010068A1
The present invention relates to a topology of power-generation and grid-integration of a transformerless hydraulic generator. The topology comprises a hydraulic generator set, a high-voltage rectifying topology formed by multiple high-v...  
WO/2012/010065A1
A topology for a single-quadrant transformerless high-voltage frequency converter. The topology comprises an inductance-capacitance (LC) filter circuit, a high-voltage charging loop, a rectifier circuit, and an inverter circuit. High-vol...  
WO/2012/007598A1
The invention relates to a single-phase to three-phase AC voltage converter which provides, from one or two AC input voltage phases plus a neutral, a three-phase output voltage plus the neutral. The converter according to the invention i...  
WO/2012/004146A1
The invention relates to a rectifier system (1) for a vehicle, in particular a railway vehicle that can be operated in a plurality of power supply systems, comprising: at least two DC voltage conductors (5, 6, 7) for providing DC voltage...  
WO/2012/005607A3
An inductive power transfer (IPT system) includes an AC-AC full-bridge converter (Tp1 - Tp4) provided between the primary conductive path (Lpt) and an alternating current power supply (Vin). The system may include a controller for contro...  
WO/2011/160642A3
In accordance with the present inventive concept, there is provided a method for controlling a converter arrangement connected to a DC link, the arrangement comprising a converter branch for a respective phase of the converter, the conve...  
WO/2011/154720A3
We describe a photovoltaic power generation system, the system comprising: at least two photovoltaic panels each having a dc power output; a power conditioning unit having a dc power input and an ac mains power supply output for deliveri...  
WO/2011/154792A2
An apparatus for providing a power output proportional to a source signal, including a phase modulator driving an upper and an lower power driver with carrier waveforms having a relative phase difference and having a signal modulated the...  
WO/2011/154196A3
The invention relates to a shaft-driven generator system having a shaft-driven generator (18). According to the invention, a voltage source inverter (42) having a network-side inductance is provided, wherein said voltage source inverter ...  
WO/2011/151934A1
The invention is related to an auto voltage regulator for charge, and more specifically relates to an auto voltage regulator for charge which has been designed to be useful for charging of DC voltage on the basis of the principles of an ...  
WO/2011/147128A1
A converting device of electrical energy includes several single-phase bridge rectification circuits and several three-phase full-controlled bridge circuits. The first input terminals of the bridge rectification circuits are connected to...  
WO/2011/143910A1
An energy saving circuit is used to reduce the input power loss when a power source is in standby or has no load in the field of power source. The energy saving circuit employs a phase shift element (9). The phase shift element (9) is co...  
WO/2011/141905A1
A method for construction of voltage or current power sources receiving an AC input, the power sources based on inclusion of a buffer stage feeding a converter operating with an output driver to a load. The buffer stage includes a buffer...  
WO/2011/140597A1
The present invention provides methods and apparatus for converting a single phase power supply source into a three phase power supply source. The single phase power supply source is utilised as a first output of the three phase power su...  
WO/2011/138110A1
The invention relates to a circuit for controlling a linear compressor, comprising a first input connection (130) and a second input connection (131) for providing the linear compressor with an electric supply voltage (Uv), an output con...  
WO/2011/139227A1
An electronic voltage stability device for airflow cabinets (100) such as biological safety cabinet or laminar flow cabinet or ductless fume hoods for delivering adjustable and stable airflow (130). The electronic voltage controlling dev...  
WO/2011/139269A1
A converter module for a variable speed drive having a semiconductor device for precharge is described. The precharge circuit includes switching modules, one switching module with a first semiconductor switch connected in parallel or ser...  
WO/2011/134057A8
Provided are methods, circuits, and systems for obtaining power from a power generator such as a photovoltaic cell or a fuel cell. The methods, circuits, and systems comprise converting substantially DC output power from the power genera...  
WO/2011/135691A1
A hybrid construction machine is made compact, and an electric swing motor thereof is driven immediately after an engine is started. A generator (5) connected to an engine (2) generates alternating current power. A converter (30) is conn...  
WO/2011/134057A1
Provided are methods, circuits, and systems for obtaining power from a power generator such as a photovoltaic cell or a fuel cell. The methods, circuits, and systems comprise converting substantially DC output power from the power genera...  
WO/2011/134990A3
The invention relates to a device for the power control of an electrical consumer that is connected to an alternating voltage supply network, comprising a circuit element (12, 14) which lies in series with the consumer and which has a co...  
WO/2011/131655A3
The present invention relates to an electricity generating system (40) having at least one direct-current unit (42) for providing a direct current (IDC), which is obtained using regenerative energy, and at least one inverter (48). For th...  
WO/2011/124745A1
The invention relates to an adjustment device (1) for controlling the electric drive (2) of an elevator in connection with a voltage reduction of the supplying network. The electric drive of an elevator comprises an electric motor (3) an...  
WO/2011/120679A3
The invention relates to a transformerless cycloconverter for connecting a first three-conductor grid (50), in particular a three-phase grid, to a second three-conductor grid (51), in particular a three-phase grid, by means of bridge mod...  
WO/2011/120679A2
The invention relates to a transformerless cycloconverter for connecting a first three-conductor grid (50), in particular a three-phase grid, to a second three-conductor grid (51), in particular a three-phase grid, by means of bridge mod...  
WO/2011/115330A1
The present disclosure relates to an automatic voltage regulator, comprising: a primary coil unit that induces an alternating current (AC) voltage, inputted from a power source, to a secondary coil according to a turn ratio; a secondary ...  
WO/2011/112630A1
A ground power unit (14) having a power supply unit capable of accepting a wide range of AC input voltages and producing one or more DC power signals for powering components of the GPU is disclosed. In one embodiment, the power supply un...  

Matches 251 - 300 out of 6,577