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WO/2015/165876A1 |
A wind farm side voltage source converter (32; 94) comprises a DC terminal (40) for connection to a DC transmission link (38), an AC terminal (42) for connection to a wind farm (44) that includes at least one wind turbine (46), and a mai...
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WO/2015/165716A1 |
An electrical converter (10) comprises at least two converter units (16), each converter unit (16) comprising a neutral point clamped half-bridge (32, 34) with a neutral point (30), an AC output (38, 40), a positive DC output (26) and a ...
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WO/2015/165574A1 |
The subject of the invention is a method for monitoring DC link capacitance in power converters which is useful in condition monitoring of electronic equipment. The inventive method comprises the following steps: measuring current of the...
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WO/2015/167568A1 |
According to one aspect, embodiments of the invention provide a power supply system comprising a power factor correction circuit coupled to an input and configured to draw input current from the input, an inverter coupled to an output an...
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WO/2015/162675A1 |
This embodiment of an electricity generation system is provided with an electricity generation device (1) and a power conversion device (2) connected to the electricity generation device (1). The power conversion device (2) is provided w...
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WO/2015/158134A1 |
A frequency inverter control method, device and system, the method comprising: detecting a three-phase voltage (Vout-abc) and a three-phase current (Iabc) outputted by the inverter side of a frequency inverter; acquiring the present powe...
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WO/2015/144179A1 |
A high voltage power supply comprises a three-phase high voltage transformer (3) and a three-phase high voltage bridge rectifier (4). A primary side of the transformer (3) has three input terminals connectable to the phases (A, B, C) of ...
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WO/2015/143883A1 |
A highly-efficient UPS system. The UPS system comprises a rectification module (20) and an inversion module (10), wherein the input end of the rectification module (20) is connected to the L end of an AC power supply, the input end of th...
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WO/2015/145307A1 |
A frequency converter (1) with an intermediate circuit (13) for driving a motor (M) comprises a rectifier (11), an inverter (12) and a direct-current intermediate circuit (13) between these, which direct-current intermediate circuit (13)...
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WO/2015/141680A1 |
This power converter is provided with: three clusters (CLu, CLv, CLw) in which unit cells are cascade connected; and power supplies of the same kind which are respectively connected to one end of each of the three clusters. Terminals of ...
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WO/2015/128477A1 |
A frequency converter (1) is used to produce at least one frequency converter output voltage (S1, S2, S3) for an electric motor (2), wherein the at least one frequency converter output voltage (S1, S2, S3) has a prescribable frequency co...
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WO/2015/127843A1 |
A UPS circuit, comprising a low frequency transformer (TX) and a battery (B), the low frequency transformer (TX) comprising a primary side winding, and a secondary side winding connected to the battery (B); the primary side winding is co...
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WO/2015/124461A1 |
The present invention provides systems and methods for reducing harmonics, for example when using an AC to AC converter to drive a load such as a motor drive. In a first embodiment, a plurality of AC/DC converter stages are connected in ...
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WO/2015/118990A1 |
A power conversion circuit (2) has as the input thereto a multi-phase AC power source, and includes a plurality of bidirectional switches which are connected to each phase of the multi-phase AC power source. A switching control circuit (...
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WO/2015/119708A1 |
A step-down AC/AC converter for use in an electric distribution system includes at least one chopper circuit for each one of a plurality of phases of the AC power, each chopper circuit including a four-quadrant switch coupled in series b...
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WO/2015/116931A1 |
An AC-to-AC matrix converter includes a controlled rectifier input stage, an inverter output stage, and a regenerative unit. The controlled rectifier input stage is electrically connected to a power source and configured to convert AC in...
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WO/2015/113304A1 |
In a motor drive circuit, a DC bus module (20) has a positive rail (22), a negative rail (24), a first capacitor unit (26), and a second capacitor unit (28). The first capacitor unit (26) includes a first capacitor (CI) for charging the ...
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WO/2015/111019A1 |
The present disclosure relates to method for use with a system having first and second uninterruptible power supplies (UPS 1 and UPS 2), and where the two UPSs are connected across a DC+ and a DC- terminal of a common battery, and where ...
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WO/2015/108497A1 |
The invention relates to the field of electrical technology and can be used in devices for powering equipment having various purposes and requiring a high quality of supply voltage. The regenerator includes a transformer having 5-7 secon...
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WO/2015/104405A1 |
The invention relates to a frequency converter for generating a network alternating voltage, which has a predetermined main frequency component, comprising at least one converter module for converting a uniform voltage into an intermedia...
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WO/2015/104886A1 |
A controller (90) generates a PWM signal (Dr, Ds, Dt) by pulse width modulation of a carrier signal (Eo) with a sinusoidal signal (Er, Es, Et), and drives switching elements (31-36) of a converter (2) on and off by means of the generated...
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WO/2015/090627A1 |
It provides a power unit including: a multi-phase bridge rectifier, having inputs being electrically connectable to a source of multi-phase AC power; a smoothing filter, being connected to an output of said multi-phase bridge rectifier; ...
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WO/2015/092293A1 |
Supply chain comprising a supply device and a load (25), the supply device comprising: an autotransformer (21) exhibiting at output N (integer > 2) triplets of distinct phases, N rectifiers (22) each linked at input to a triplet of phase...
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WO/2015/093623A1 |
A power conversion apparatus and a power conversion method are provided. The power conversion apparatus includes a rectifier configured to convert AC power to DC power, a smoothing filter configured to control the DC power received from ...
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WO/2015/090872A1 |
A washing and/or drying appliance (100) is provided. The washing and/or drying appliance (100) comprises: - an electric load (115; 144; 170; 177); - a driving apparatus (200) for driving the electric load (115; 144; 170; 177), the drivin...
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WO/2015/090629A1 |
It is provided a multi-phase electric drive for use with a multi-phase AC load and the power unit thereof. The multi-phase electric drive includes a multi-phase power transformer, including at least one primary winding and a plurality of...
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WO/2015/086801A1 |
Multiphase generator-conversion systems and clusters are disclosed. The multiphase generator-conversion systems comprise a multiphase n-stator generator, n conversion lines and a transformer module. Each of the n conversion lines is coup...
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WO/2015/085926A1 |
Providing is an AC voltage regulator that regulates the output AC voltage level regardless of the varying AC input voltage utilizing high frequency series inductors L3-L6 that only process a proportion of the total output power and using...
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WO/2015/086416A1 |
The invention relates to a cycloconverter (4) having a number of first converter groups (6), which in turn each have a number of line-commutated first power converters (7). The first power converters (7) are designed at least as bipolar ...
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WO/2015/078094A1 |
An AC-AC voltage transformation device, which is used for transforming the voltage of an AC power source (100) and supplying same to a load, and contains a first to a fourth diode (D1, D2, D3, D4), a transformer (10) and an electronic sw...
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WO/2015/080598A1 |
A push-pull inverter for an inductive power transmitter including a DC power supply that supplies power to a first and second branches; a resonant inductor connected between a first node on the first branch and a second node on the secon...
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WO/2015/078093A1 |
An AC-AC power source conversion device, comprising a rectifier circuit (10), an active power factor correction circuit (20), an automatic charge pumping circuit (30) and an inverter circuit (40), wherein the rectifier circuit is connect...
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WO/2015/075019A1 |
There is provided a bi-directional AC/DC converter comprising a first AC terminal for connection to a first AC circuit terminal, a neutral line terminal for connection to a neutral AC circuit terminal, a common node, a first AC side acti...
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WO/2015/062865A1 |
A power system (100) for a floating vessel, in particular a drilling vessel, is provided. The power system has at least two AC transformer units (21, 22, 23) adapted to provide transformation of AC electric power, each AC transformer uni...
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WO/2015/062483A1 |
A bidirectional AC series voltage regulator that regulates an output AC voltage level regardless of the varying AC input voltage utilizing high frequency series inductors that only process a proportion of the total output power. The AC s...
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WO/2015/058538A1 |
A power source circuit comprising a rectifier (10), a first direct-current bus (40) and an inverter (20) which are connected in sequence, and also comprising a switch power source (30). The input end of the switch power source (30) is co...
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WO/2015/057405A1 |
A turbine-based energy generation system (100) includes an electric generator (102) and auxiliary load (112). A power system for the turbine-based energy generation system includes a main converter (106) and an auxiliary converter (110)....
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WO/2015/052497A1 |
An AC/AC boost converter comprising input terminals, output terminals, an inductor, a bridge arm comprising a pair of bi-directional switches, a capacitor and a control circuit for controlling the switches. The bridge arm and the capacit...
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WO/2015/043457A1 |
A power supply apparatus for a high-voltage direct-current electronic device replaces a high-voltage transformer with multiple cascaded medium-voltage transformers, and couples a power source at the ground potential to a high-potential e...
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WO/2015/043600A1 |
According to some aspects, a power conversion system for converting electrical power produced by a generator is provided. The power conversion system comprises at least one first power converter configured to convert alternating current ...
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WO/2015/043249A1 |
Disclosed are a method and system for regulating a contactless transformer; the method is applied to the regulating system comprising the contactless transformer and a detection device (2), the contactless transformer comprises a transmi...
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WO/2015/041111A1 |
Provided is a power conversion device that reduces the power capacity that is required of a power buffer circuit. A converter (3) performs full-wave rectification with respect to a single-phase voltage (Vin) and outputs a rectified volta...
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WO/2015/041638A1 |
Embodiments of a bypass system for a multi-cell power supply are provided. An aspect includes a plurality of power cells, each of the plurality of power cells comprising a respective bypass device comprising one or more contactors. Anoth...
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WO/2015/037455A1 |
A transformer device provided between a power source and a load, and equipped with a front-stage circuit and a rear-stage circuit, each of which has the function of alternately switching the polarity of an output with respect to an input...
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WO/2015/038995A1 |
A method and apparatus for line-cycle storage of a single-phase cycloconverter. The method includes receiving input power from an input port of the singe-phase cycloconverter and monitoring an AC output port of the single-phase cycloconv...
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WO/2015/032598A1 |
The invention relates to a device (1) and a method for controlling the stability of a local network (3). The local network (3) comprises a plurality of outgoing circuits (41, 42,..., 4M,), each having at least one load (5) and/or at leas...
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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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