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Matches 251 - 300 out of 7,193

Document Document Title
WO/2015/028663A1
The invention relates to a pump-storage power plant, in particular an electric unit comprising a converter (3), a rotating electric synchronous machine (4), and a charging unit (5), which has at least one transformer (6) and a switch (7)...  
WO/2015/029720A1
Provided is a transformer, which is a distributed constant transformer provided between an AC power source having a frequency (f) and a load having a resistance (R), comprising, with a wavelength of λ for the frequency (f): a first tran...  
WO/2015/029744A1
Provided is a transformer device provided between a power source and a load with a resistance value R, wherein, where n is a natural number of at least 4, provided is a two terminal pair circuit configured by mutually connecting n reacta...  
WO/2015/028665A3
A converter arrangement (10b) comprises at least first and second modular multilevel converters (12a, 12b); wherein each of the at least first and second modular multilevel converters comprises at least two converter branches (16). Each ...  
WO/2015/024583A1
The invention relates to a method for controlling a self-commutated converter (1) that is connected to further self-commutated converters (1) by means of its AC voltage connection via an inductive component (2) using a coupling point (3)...  
WO/2015/025133A1
Apparatus for regulating high power voltage supplies, comprising a voltage input, voltage regulating means arranged to receive the AC input voltage and output a regulated output voltage under control of a control means connected to the v...  
WO/2015/023809A1
Some embodiments provide a UPS 100 including a non-current commutated solid-state bypass switch 120. The bypass switch may include at least one transistor configured to control current to the load. Further embodiments provide a UPS inclu...  
WO/2015/022691A1
A power controller for controlling power supply to a load at medium voltage is disclosed. The power controller may include a switching module electrically connected between a medium voltage AC power supply and a load to switch on or to s...  
WO/2015/015216A1
Embodiments of the present invention provide an apparatus for controlling a voltage provided to a load, comprising a transformer having primary and secondary windings in circuit between an AC electrical supply and a load, wherein the pri...  
WO/2015/016977A1
A battery module including a first positive terminal, a second positive terminal, a ground terminal, a power conversion circuit, and a power assembly. The power assembly includes a plurality of battery cells coupled in series and dispose...  
WO/2015/010827A3
A module (30) for use in a voltage source converter comprises: first and second terminals (48,50) for connection to an electrical network; an energy storage device (52); at least one switching element, the or each switching element being...  
WO/2014/209741A1
A system and method for controlling an adjustable speed drive (ASD) to decelerate an AC load during a generating mode of operation is disclosed. The ASD includes a capacitor and an inverter coupled to a DC link. A current sensor system i...  
WO/2014/210125A1
A printed circuit board power cell (100) having a printed circuit board (110) including a DC bus disposed within the printed circuit board. The printed circuit board power cell includes a plurality of capacitors (106) connected to the DC...  
WO/2014/203282A3
A bi-directional AC/AC converter is designed to provide improved AC/AC power conversion along with reduced switching losses, reduced harmonic distortion and improved power factor. The converter is characterized by bi-directional switches...  
WO/2014/198821A1
The invention relates to a converter unit (10; 10a) comprising at least one inverter (12; 12a) for supplying a direct voltage applied on the input side to at least one output-side load (14; 14a), comprising at least one braking chopper u...  
WO/2014/198371A1
The present invention relates generally to drive systems having at least one electric motor, which can be powered by means of power electronics that can be connected to a voltage source via a DC voltage circuit, and an energy storage app...  
WO/2014/196013A1
A power conversion device comprises: transformers (20n) each equipped with primary windings connected to input terminals (R, S, T) and secondary windings consisting of a plurality of single-phase open windings insulated from each other; ...  
WO/2014/187064A1
A power module for a medium and high-voltage frequency converter and a frequency converter comprising same. The power module has a three-phase alternating current input and a single-phase alternating current output, and comprises a circu...  
WO/2014/188219A1
A power adaptor which comprises an input for connection to an AC power supply, a resonant circuit (LCL) coupled to the input that provides an output suitable for driving a load (LCL), at least one half-bridge drive circuit (Ql, Q2) for p...  
WO/2014/176739A1
A voltage adjusting power source, comprising: a controller (230), an adjustable voltage source group (210) and a switch group (220). The adjustable voltage source group comprises at least two adjustable voltage sources (211, 212 … 21N)...  
WO/2014/179365A1
Electrical power systems and methods using bidirectional power converters to provide, among other functions, uninterruptible power supplies for loads such as cell towers. The power-packet-switching power converter can be connected, for e...  
WO/2014/176036A1
A power supply, for a plasma cutter or a plasma arc welder, having a variable switching frequency and method of operating the power supply is generally disclosed. The power supply includes a switch for setting the switching frequency and...  
WO/2014/171084A1
A power convertor receives an input voltage (in) as a single-phase AC voltage at a pair of input terminals; designates a first target voltage (ref1), a second target voltage (ref2), and a third target voltage (ref3) representing a sequen...  
WO/2014/158487A1
Methods and apparatus for a power storage and delivery system according to various aspects of the present invention generally comprise receiving a first electric current from one or more sources, storing energy derived from the electric ...  
WO/2014/160859A1
In an embodiment, a power converter includes: a plurality of power amplifier units, each having: a plurality of slice each with a power conversion module including an AC/DC/AC converter; a mains controller to control the plurality of sli...  
WO/2014/146195A1
There is provided an electronic sine wave transformer circuit configuration for transferring power from a source to a load using magnetic storage coupling, the circuit comprising: an input node adapted to receive an input alternating cur...  
WO/2014/152765A3
An improved interface for renewable energy systems is disclosed for interconnecting a plurality of power sources such as photovoltaic solar panels, windmills, standby generators and the like. The improved interface for renewable energy s...  
WO/2014/149355A3
A load commutated inverter (LCI) drive system for a synchronous electrical machine is provided. The system may include a first supply bridge and a second supply bridge, each of which may include an alternating current to direct current (...  
WO/2014/147172A2
The invention relates to a method for operating an inverter (3) which is connected to a power supply system (7) by means of a transformer (4) for feeding electrical energy, wherein output currents (ia, ib, ic) and output voltages (Va, Vb...  
WO/2014/140004A3
The invention relates to a charging device for an electric vehicle (1) that can be driven by means of an electrical energy store (2), the charging device comprising a charging interface (5) outside the electric vehicle (1), which chargin...  
WO/2014/141436A1
The present invention provides a power conversion system capable of reducing the voltage applied to a power converter even when a module constituting the power converter fails. This power conversion system has: a switching module constit...  
WO/2014/139948A3
The invention relates to an inductive energy transfer system comprising a coil assembly (Lp) on the primary side and a coil assembly (Ls) on the secondary side, each of said assemblies forming a resonant circuit (RESp, RESs) with a capac...  
WO/2014/140414A1
The invention relates to an arrangement for filtering common- mode interference. The arrangement comprises a power bridge (5, 6) connected between an AC voltage circuit (1, 4) and a DC voltage circuit (2), which power bridge comprises co...  
WO/2014/127829A1
The invention pertains to the production of a device (1) for exchanging electric power with a pole (4) of a direct current network (5) with two connection terminals (2, 3) for serial connection to the pole (4) and with at least one conve...  
WO/2014/127932A2
The invention relates to an on-load tap changer (1) for controlling voltage, comprising semiconductor switching elements (61, 62, 71, 72), and to a method for controlling voltage for a variable transformer (2). The on-load tap changer (1...  
WO/2014/127330A3
Methods and systems for managing link voltages in a power converter, where single phase, three phase or universal systems can be used. Common mode management refers to shifting of voltages in a particular direction to perform transition ...  
WO/2014/125445A3
An electric energy conversion device having a master electric energy conversion unit (2a) and a slave electric energy conversion unit (2b); and wherein the master conversion unit (2a) is synchronized with the slave conversion unit (2b).  
WO/2014/125576A1
A crane apparatus provides full-wave rectification of three phase AC power (11A) supplied from a ground power facility with a three-phase full-wave rectifier (21); supplies a common bus (B) with acquired DC power (12A); outputs three-pha...  
WO/2014/127090A2
A system and method for capturing current information for a power converter is disclosed. The current monitoring system includes a control system operably connected to a circuit having a plurality of semiconductor switches that are contr...  
WO/2014/127090A3
A system and method for capturing current information for a power converter is disclosed. The current monitoring system includes a control system operably connected to a circuit having a plurality of semiconductor switches that are contr...  
WO/2014/122829A1
In the present invention, a circuit module (10A) provided with a primary coil, which is of a step-down transformer (13A) and results from the primary coils of a plurality of transformer elements (131, 132) being connected in series, and ...  
WO/2014/120850A3
Apparatus and methods in accordance with this invention provide a multi-cell power supply for receiving power from a source and delivering power at an output terminal to a load. The multi-cell power supply includes a first power cell cou...  
WO/2014/118818A1
A DC power source circuit comprises: a first arm in which a switching element(Q1) and a diode are connected in inverse parallel; a second arm in which a switching element(Q2) and a diode are connected in inverse parallel; a third arm com...  
WO/2014/120850A2
Apparatus and methods in accordance with this invention provide a multi-cell power supply for receiving power from a source and delivering power at an output terminal to a load. The multi-cell power supply includes a first power cell cou...  
WO/2014/115777A1
A matrix convertor converts input three-phase AC power directly to three-phase AC power and outputs the converted three-phase AC power to a load, the matrix convertor comprising: a bidirectional switching circuit for turning the supply o...  
WO/2014/115498A1
A highly efficient and reliable power conversion method for converting an input single-phase AC voltage into an output two-phase AC voltage, the power conversion method comprising: receiving the input voltage (in); converting the input v...  
WO/2014/114481A1
The present invention relates to an AC- AC converter device (1), comprising first and second AC input terminals (ACin1, ACin2) and first and second AC output terminals (ACout1, ACout2). An input device (Bin) is connected between an input...  
WO/2014/114755A3
The invention relates to a method for producing a digital signal (DS) from an analog signal (UA) produced by means of a frequency converter on the basis of a pulse-width modulation having a variable period duration, wherein values of the...  
WO/2014/113146A1
A connection for parallel bridge circuits in a power converter is provided. In particular, a power converter can be used to provide a desired power to a load, such as a generator, motor, electrical grid, or other suitable load. The power...  
WO/2014/113146A8
A connection for parallel bridge circuits in a power converter is provided. In particular, a power converter can be used to provide a desired power to a load, such as a generator, motor, electrical grid, or other suitable load. The power...  

Matches 251 - 300 out of 7,193