Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 451 - 500 out of 7,488

Document Document Title
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/2014/120850A3
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/2014/152765A3
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/2014/125445A3
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/2014/176739A1
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/2014/127330A3
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/2014/171084A1
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/2014/147172A2
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/2013/090845A3
In at least one embodiment, an electronic system and method includes a controller to control a switching power converter in at least two different modes of operation depending on whether the controller detects a dimmer or not and/or whet...  
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/2014/140414A1
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/2014/063774A3
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/2014/016532A3
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/2014/127829A1
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/2013/090852A3
In at least one embodiment, an electronic system adapts current control timing for half line cycle of a phase-cut input voltage and responsively controls a dimmer current in a power converter system. The adaptive current control time and...  
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/2014/122829A1
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/2014/113146A8
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...  
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/2013/070094A3
A method for controlling a converter including a resonant circuit, where the converter is controlled such that control switches are switched into a first state at the occurrence of an event that is related to a dependent variable 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/2014/113228A2
Systems and methods for reducing current imbalance between parallel bridge circuits used in a power converter of a power generation system, such as a wind driven doubly fed induction generator (DFIG) system, are provided. The power conve...  
WO/2014/113420A1
Overvoltage protection apparatuses, systems and methods for variable frequency motor drives are disclosed. In an exemplary embodiment, a variable frequency motor drive system including a rectifier, a DC bus electrically coupled with the ...  
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/2014/108498A1
The invention relates to an electromotive drive having a frequency converter, which is connected to a power supply (31) on the mains side, and having an electric motor (37), which is connected to the frequency converter. According to the...  
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/2014/105774A1
A load control device includes an input and an output connectable to an AC source and an AC load, respectively, with one or more supply lines each corresponding to a phase in the load connecting the input and output. Line-side switches a...  
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/2013/079962A3
A voltage optimisation apparatus (10) for controlling output voltage (38) of an alternating current electricity supply (36) is disclosed. The apparatus includes input (12,14) and output terminals (16,18) and a transformer (24) reducing o...  
WO/2013/021205A3
The invention relates to the generation of electricity from flowing fluid and in the preferred embodiment to a horizontal axis turbine and generator assembly. The present invention is applicable to water turbines and the invention is des...  
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/2014/079970A1
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/2013/072741A3
An electrical gear (1) is disclosed, configured for supply of electrical drive power to a machinery (2) to be rotated at high speed, such as a subsea motor /pump or a subsea motor/ compressor assembly, the electrical gear comprising a hi...  
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/2013/007268A3
According to an embodiment, a power generation system is provided comprising a power generator; a plurality of converter modules, each converter module having a DC link, wherein the DC link of each converter module is connected to the DC...  
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...  

Matches 451 - 500 out of 7,488