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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)...
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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...
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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...
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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)...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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; ...
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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...
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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...
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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)...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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;...
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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...
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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 ...
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