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Matches 401 - 450 out of 6,750

Document Document Title
WO/2011/067090A3
The invention relates to a method for operating an inverter circuit wherein the inverter circuit has n input phase connections (U1, V1, W1) and p output phase connections (U2, V2, W2), wherein n ≥ 2 and p ≥ 2, (n p) comprises two-pol...  
WO/2011/064277A2
A drive device and method for controlling a rotating machine. The drive device includes plural inverters configured to transform first alternate currents (AC); DC links connected to the plural inverters and configured to transmit the DC ...  
WO/2011/064277A3
A drive device and method for controlling a rotating machine. The drive device includes plural inverters (60) configured to transform first alternate currents, AC; DC links (62a, 62b)connected to the plural inverters (60) and configured ...  
WO/2011/062508A3
A power converter providing required hold up for a primary converter, particularly a cycloconverter, without the required hold up capacity by an auxiliary converter including storage capacitors having the requisite capacity. The auxiliar...  
WO/2011/058273A2
The invention relates to a matrix converter circuit having n symmetrical levels per phase including n conversion arms respectively supplied by n intermediate symmetrical voltage levels and connected at the output thereof to a common poin...  
WO/2011/060280A3
A power isolation system and method is disclosed. The system includes a transformer suitable for use in the power isolation system, and a semiconductor device electrically connected to the transformer to provide a reduction of the inrush...  
WO/2011/058273A3
The invention relates to a matrix converter circuit having n symmetrical levels per phase including n conversion arms respectively supplied by n intermediate symmetrical voltage levels and connected at the output thereof to a common poin...  
WO/2011/060280A4
A power isolation system and method is disclosed. The system includes a transformer suitable for use in the power isolation system, and a semiconductor device electrically connected to the transformer to provide a reduction of the inrush...  
WO/2011/054194A1
A static power supply for retractable cables comprises a static power supply housing (11) and a cable reel housing (6). A frequency converter with a frequency and an input voltage of mains supply is disposed in the static power supply ho...  
WO/2011/052364A1
A power conversion device (1) is configured from an inductor (L) connected in series to an alternating-current power source (20) and a load (30), a full-bridge MERS (100) connected in parallel to the load (30), a control circuit (110), a...  
WO/2011/047784A1
The invention relates to a device having an energy recovery supply unit and to a fault detection method. The supply unit is connected to the supplying power network via at least one inductor. The invention is characterized in that a netw...  
WO/2011/048719A1
Disclosed is a power semiconductor module wherein a driver IC (7), which operates in a power supply system that is electrically insulated from a control IC (8), is mounted in the vicinity of a switching element (4) on a first conductor p...  
WO/2011/041425A3
An apparatus including an alternator that is drivable an engine for producing a first AC electric current, a rectifier in electrical communication with the alternator lot producing a DC electric current an inventor in electrical communic...  
WO/2011/029480A1
The invention concerns a method, voltage source converter and computer program product for limiting the current in a DC power transmission system (20). The voltage source converter (12) has an AC side and a DC side and a fault current pa...  
WO/2011/029482A1
An inverter provides alternating current (iout) to a load (130) containing a welding circuit. The inverter includes at least one commutation circuit (110) and a bridge circuit (120) connected to a bus forwarding power from a DC power sou...  
WO/2011/024668A1
Disclosed is an engine system which can implement the specification change of power-supply voltage from an alternating-current power supply without additionally providing a transformer when the power supply voltage to be subjected to spe...  
WO/2011/022442A3
Methods and systems for power conversion. An energy storage capacitor is contained within an H-bridge subcircuit which allows the capacitor to be connected to the link inductor of a Universal Power Converter with reversible polarity. Thi...  
WO/2011/022304A1
A DC to AC inverter unit used in a solar cell power system can include a controller capable of adjusting the inverter's minimal operating voltage to increase the inverter unit power capacity.  
WO/2011/022442A9
Methods and systems for power conversion. An energy storage capacitor is contained within an H-bridge subcircuit which allows the capacitor to be connected to the link inductor of a Universal Power Converter with reversible polarity. Thi...  
WO/2011/022442A2
Methods and systems for power conversion. An energy storage capacitor is contained within an H-bridge subcircuit which allows the capacitor to be connected to the link inductor of a Universal Power Converter with reversible polarity. Thi...  
WO/2011/018542A3
The invention relates to a method for controlling a back-to-back converter in the event of disturbances in the network limiting the capacity of the converter on the side of the network to control the voltage of the DC stage. In this case...  
WO/2011/015227A1
A voltage source converter (30) for HVDC power transmission comprising at least one phase element (32) consisting solely of series connected diodes (40) to interconnect, a DC network (34) and an AC network (36). The voltage source conver...  
WO/2011/012689A3
This invention discloses a high-voltage frequency conversion device, which comprises a phase-shifting transformer and 3n power units, wherein every n power units are serially connected to form one phase, three phases are connected in the...  
WO/2011/012143A1
Apparatus and method for generating electric energy in an electric power transmission system comprising an AC cable comprising a core, wherein a portion of the core is partially surrounded by an apparatus comprising a ferromagnetic body ...  
WO/2011/012689A2
This invention discloses a high-voltage frequency conversion device, which comprises a phase-shifting transformer and 3n power units, wherein every n power units are serially connected to form one phase, three phases are connected in the...  
WO/2011/009285A1
A movable shore power variable frequency power supply device includes an onshore power supply electric box (4), an onboard power receiving system (3) and a variable frequency power supply device (1). The input terminals of the variable f...  
WO/2011/008567A3
The present application discloses methods, circuits and systems for power conversion, using a universal multiport architecture. When a transient appears on the power input (which can be, for example, polyphase AC), the input and output s...  
WO/2011/008567A2
The present application discloses methods, circuits and systems for power conversion, using a universal multiport architecture. When a transient appears on the power input (which can be, for example, polyphase AC), the input and output s...  
WO/2011/001146A1
A capacitive impedance decoupling AC power controller comprising, a plurality of zero loss capacitors (12) in parallel each of desired capacitance C farads. The plurality of zero loss capacitors in parallel (12) are commonly connected in...  
WO/2010/145706A1
An arrangement for exchanging power with a three-phase electric power network comprises a Voltage Source Converter (5) having three phase legs (A-C) with each a series connection of switching cells. The three phase legs are interconnecte...  
WO/2010/144805A1
A versatile distribution transformer (10) having an electromagnetic transformer (12) and a power electronic module (14) is provided. A pocket (100) having connectors electrically connected to at least one winding structure (22) of the el...  
WO/2010/142961A1
A system for distribution of electrical energy to a load is provided. The system comprises a load tap changer to distribute electrical energy to the load, wherein the load tap changer is controllable for operation in either phase angle f...  
WO/2010/133721A1
The present invention relates to a protection circuit for a wind-power generator that includes a filter between the DC bus of the converter and earth, providing an additional path for the earth currents of the system, thereby reducing ex...  
WO/2010/131644A1
Provided is a control device for hybrid work machinery, whereby the degree of freedom in disposing necessary components is increased and the size of the hybrid work machinery is decreased. A first power conversion unit (14) is connected ...  
WO/2010/124634A1
A high voltage power conversion device comprises a transformer (33) and a plurality of power units (A1-A5, B1-B5, C1-C5). The transformer includes at least one primary winding which is connected to a three-phase AC input power supply (30...  
WO/2010/122085A1
The present invention concerns an apparatus for controlling the operation of a snubber circuit in a system in which an input voltage is processed using at least switches controlled with at least one periodical pattern. The input voltage ...  
WO/2010/124043A1
A two-wire smart load control device, such as an electronic switch, for controlling the power delivered from a power source to an electrical load comprises a relay for conducting a load current through the load and an in-line power suppl...  
WO/2010/118975A1
The invention relates to a drive system for a facility having an alternating-current isolated network, in particular for a ship or an offshore platform, comprising a three-phase drive machine (8), which can be operated both as a motor an...  
WO/2010/115725A1
The invention relates to a system for controlling an alternating electric charge, comprising a variable speed drive (10) which includes a rectifier module (11) provided with a plurality of power supply terminals (L1, L2, L3) and supplyin...  
WO/2010/116865A1
Provided is an indirect matrix converter wherein distortion of the input current or output voltage can easily be reduced. The indirect matrix converter is provided with a first power converter (16) and a second power converter (18), and ...  
WO/2010/106430A1
A power source for an electric arc welder comprising: inverter means (110) having a primary circuit (220, 230) and a secondary circuit (240), where said primary circuit (220, 230) has four switches (222, 223, 232, 233) and is capable of ...  
WO/2010/099787A3
An electrodynamic braking device for a universal motor is proposed, wherein during a braking operation a field winding is supplied from a network, and an armature is directly short-circuited, and a braking operation is carried out using ...  
WO/2010/097407A1
The present invention relates to a light source comprising a piezoelectric transformer and one or more semiconductor-based devices that exhibit electroluminescence electrically connected thereto. The piezoelectric transformer is configur...  
WO/2010/099459A3
A hybrid distribution transformer is provided that includes an electromagnetic transformer and a voltage source converter that is operable to reduce fluctuation in the output voltage of the hybrid distribution transformer in the event of...  
WO/2010/094547A1
The invention relates to a method for charging at least one intermediate circuit capacitor (4) arranged in an intermediate circuit (2) mounted between a constant voltage source (1) and a power supply. According to the invention, the inte...  
WO/2010/092113A1
This invention relates to a power supply system comprising at least two drive units (3) having two power inputs and at least one power generator (G) providing electric power at a chosen system frequency and voltage. The system comprising...  
WO/2010/089186A2
The invention relates to a control circuit (1) for a three-phase asynchronous motor (2), wherein each of three net phases (L1, L2, L3) is connected to at least one of three stator windings (3.1, 3.2, 3.3) of the three-phase asynchronous ...  
WO/2010/091260A3
A hybrid transformer is provided that includes an electromagnetic transformer and an AC-AC converter with a DC bridge. The AC-AC converter is operable to keep the input voltage and current of the hybrid transformer substantially in phase...  
WO/2010/088979A1
The invention relates to a method for regulating a self-commutated mains power converter (2) of an intermediate voltage circuit converter (24), wherein in each mains phase (R,S,T) a throttle is connected upstream of said mains power conv...  
WO/2010/089186A3
The invention relates to a control circuit (1) for a three-phase asynchronous motor (2), wherein each of three net phases (L1, L2, L3) is connected to at least one of three stator windings (3.1, 3.2, 3.3) of the three-phase asynchronous ...  

Matches 401 - 450 out of 6,750