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Matches 1 - 50 out of 7,200

Document Document Title
WO/2018/074653A1
The present invention relates to a method for operating a semiconductor transformer by using an auxiliary power source and a DC/DC converter using the same, and a method for operating a semiconductor transformer by using an auxiliary pow...  
WO/2018/075636A1
Enhanced common mode current reduction in three-phase inductors, transformers, and motor drive systems. A motor drive system includes an iron core transformer, a common-mode transformer coupled to a three-phase motor, and a variable spee...  
WO/2018/070023A1
An on-load tap switching device according to an aspect of the present invention has a changeover switch and an insulating mediator. The changeover switch includes a semiconductor switch, and shifts the transformation ratio by switching t...  
WO/2018/067933A1
An AC power converter converts power from an AC power source to an AC load. A DC power holding source is coupled to an input half-bridge switch, a common half-bridge switch and an output half-bridge switch. A controller is coupled to at ...  
WO/2018/067843A1
Embodiments of the present disclosure relate to a heating, ventilating, air conditioning, and refrigeration (HVAC&R) system that includes a variable speed drive (52) configured to provide power to a motor (50) that drives a compressor (3...  
WO/2018/067839A1
Embodiments of the present disclosure relate to a heating, ventilating, air conditioning, and refrigeration (HVAC&R) system that includes a variable speed drive (VSD) (52) configured to supply power to a motor (50) configured to drive a ...  
WO/2018/067833A1
Embodiments of the present disclosure relate to a refrigeration system that includes a compressor configured to circulate refrigerant along a refrigerant loop, a motor (106-1, 106-2, 106-3) configured to drive the compressor, and a varia...  
WO/2018/061653A1
The present invention relates to an automotive electric power converting device that performs a phase difference operation, provided with a plurality of electric power converters, including a converter which converts received alternating...  
WO/2018/059672A1
The present disclosure relates to a method of power unbalance compensation in a direct AC-to-AC Modular Multilevel Converter (MMC) (1) having a three- phase side connected to a three-phase AC network L having a first fundamental frequenc...  
WO/2018/062261A1
The present invention maintains a power buffer function and reduces a distortion from a sinusoidal wave in the waveform of an input current, even if the waveform of a buffer current is distorted from a sinusoidal wave. A duty calculation...  
WO/2018/054543A1
The invention relates to a system and a method for operating a system, comprising a rectifier that can be supplied by an electric AC voltage supply system, an inverter that feeds an electric motor, and a DC-to-DC converter connected to a...  
WO/2018/049473A1
An electrical power distribution network, including a plurality of electrical power control apparatuses, each including : Signal conversion components in order to convert the received signal to have a desirable signal having a second fun...  
WO/2018/047044A1
A system for controlling and regulating the AC voltage level delivered to a load regardless of the varying input AC voltage is provided, the system comprises a high frequency AC series voltage regulator (102) coupled with a low frequency...  
WO/2018/043367A1
The objective of the present disclosure is to reduce power loss due to switching. A control unit (7) controls an inverter circuit (5) such that positive and negative voltages are applied alternately to a primary winding (19). During a fi...  
WO/2018/038423A1
A power supply apparatus according to various embodiments of the present disclosure comprises: a charger that regulates at least one of voltage and current of power supplied from a power supply source and supplies the power to an electro...  
WO/2018/036596A1
A method of controlling a wind turbine generator (1) comprising an electrical generator (10) and a power converter (12), the power converter (12) comprising an electrical switch (14a, 14b) that is configured to process electrical power p...  
WO/2018/037021A1
The present invention provides an apparatus and a method for reducing power consumption of a compressor. The invention applies a first operating voltage to the compression, then determines an operating power of the compressor at the firs...  
WO/2018/033214A1
The present disclosure relates to a method of decoupled modulation of a direct AC/AC MMC 1 between a first AC network L having a first waveform and a second AC network R having a second waveform, the MMC having a double-star topology wit...  
WO/2018/025307A1
An electric power control system (1000), provided with: a first AC/DC converter (5A); a second AC/DC converter (5B); a first switch (sw1) connected between the first AC/DC converter and a first power transmission line (2A) of a first ele...  
WO/2018/024680A1
The aim of the invention is to provide a simple and installation-space-optimized control of a so-called "intelligent glass pane". This aim is achieved by means of a method for controlling the intelligent glass pane (2) by controlling sai...  
WO/2018/020297A1
Apparatus (Frequency Decoupling Smart Transformer - FDST) and control method of self organized distribution grid segments/sections operation without new physical communication infrastructure, implemented by decoupling distribution grid s...  
WO/2018/019429A1
The invention relates to a drive system having a converter, comprising an inverter for feeding an electric motor and comprising a mains-fed rectifier, the direct-voltage-side connection of which provides an intermediate circuit voltage f...  
WO/2018/015398A1
The invention relates to a control apparatus for a refrigerator compressor having at least one two-phase AC asynchronous motor (K1, K2), having mains connection means (10) for connection to a preferably public voltage supply network whic...  
WO/2018/015023A1
The invention relates to a converter system and a method for operating a converter system with a feedback function, in particular a block-type feedback function, having at least the following: - an inverter (101), in particular a first i...  
WO/2018/011863A1
An inverter device 1 is provided with a converter circuit unit 11, an inverter circuit unit 12, and a current detection unit 13. The inverter device 1 is provided with: a calculation unit 14 that calculates a frequency command value on t...  
WO/2018/010785A1
A method of controlling AC power to drive at least one load, the method comprising: determining a power adjustment rate of 0% to 100% of a maximum AC power; identifying a predetermined number of semi-cycles of an AC power signal, the pre...  
WO/2018/006517A1
A method for detecting an instantaneous current in an intermediate DC link of an AC-DC-AC circuit and a locomotive. The method comprises: a current transformer synchronously collecting phase current signals Ia, Ib and Ic of three phases ...  
WO/2018/008371A1
The present invention ensures insulation between a metal member that supports a power semiconductor module, and an input/output end of the power semiconductor module. Disclosed is a power conversion device 10 wherein a bus bar 51 of a co...  
WO/2017/210279A1
The present disclosure provides methods and circuits of a smart cable that allows using parasitic inductances available in any cable that has at least two wires for power connection in order to provide both power connection and power con...  
WO/2017/204938A1
An ASD circuit includes an input, solid-state switch rectifier bridge, DC link, and DC link capacitor bank. A pre-charge circuit is coupled between the input and the DC link capacitor bank and includes pre-charge relays operable in an on...  
WO/2017/201209A1
Various examples are provided for soft switching solid state transformers and converters, and their operation and application. In one example, a soft switching solid state power transformer includes a high frequency (HF) transformer; fir...  
WO/2017/198410A1
The invention relates to a system (1) for generating a three-phase alternative voltage, having at least one gas turbine (2), at least one generator (3) driven by the gas turbine (2), at least one regulated direct acting inverter (4), by ...  
WO/2017/198042A1
A direct-current bus voltage fluctuation suppression method and control method for a dual-PWM current converter. The direct-current bus voltage fluctuation suppression method comprises the following steps: establishing a power balance eq...  
WO/2017/198268A1
Aspects of the present disclosure are generally directed to configurations of power conversion systems for wind turbine generators. For example, certain aspects are directed to a multi-rotor wind turbine. The multi-rotor wind turbine gen...  
WO/2017/194196A1
Converter system comprising an AC/DC converter and method for operating a converter system, wherein the DC-voltage-side terminal of the AC/DC converter feeds a series circuit, comprising a braking resistor and a controllable switch, in p...  
WO/2017/189055A1
Power-packet-switching circuits (and methods and systems) in which at least one port uses series-connected combinations of bidirectional switches to connect a link inductor (or transformer), with selectable polarity, to an outside line. ...  
WO/2017/174126A1
The invention relates to an electrical device (6) having a semiconductor circuit (7) which is designed for a high voltage and is arranged in a housing (8). The invention is characterized in that the housing comprises a plurality of housi...  
WO/2017/176058A1
The present invention relates to an RF wireless power transmission system provided with an array antenna, and more specifically, provided is an RF wireless power transmission system provided with an array antenna for remotely charging a ...  
WO/2017/167404A1
There is provided a method and apparatus for controlling harmonics. For each device in an array of devices, a level of harmonic control is acquired to apply to an alternating current voltage powering the device. The level of harmonic con...  
WO/2017/171182A1
The present invention relates to a converter-driving device in a wind power generation system, a converter-controlling device in a wind power generation system, a switching element module-driving device in a wind power generation system,...  
WO/2017/163451A1
[Problem] To provide a heat pump device capable of avoiding resonance of a power supply while suppressing an increase in the number of components, installation space, and cost. [Solution] A heat pump device is equipped with: a compressor...  
WO/2017/164450A1
The present invention relates to an active phase control method for tracking a maximum output and a wave power generation system for supporting the same. Disclosed is a wave power generation system comprising: a linear generator coupled ...  
WO/2017/160098A1
The present invention relates to a switching power supply apparatus and, particularly, to a method and an apparatus for lowering the electromagnetic interference (EMI) of a power supply apparatus by reducing the noise generated by a rect...  
WO/2017/153002A1
The invention relates to a valve train (10) that is in particular suited for gas valves (11) having safety shut-off function, comprising an electric motor (12), in particular a stepper motor, that opens, and also closes if need be, the v...  
WO/2017/153096A1
The invention relates to an energy recovery rectifier device (16), in particular for an industrial plant (2), for connection to an AC system (8), comprising an energy recovery rectifier (24) and a buffer capacitor (46) that is connected ...  
WO/2017/155693A1
A wireless power transfer adapter is provided. The wireless power transfer adapter comprises a receive coil configured to receive wireless power from a wireless power transmitter at a first frequency associated with a first wireless powe...  
WO/2017/147674A1
The present application to a patent for an invention relates to an electronic power switch for use in particular in the electronic and electrical fields. More specifically, the switch consists of a semiconductor for switching or re-energ...  
WO/2017/144430A1
The present invention provides a modular multilivel converter and a power electronic transformer, the modular multilevel converter comprising: a low- frequency AC to DC conversion module, comprising three branch circuits connected in par...  
WO/2017/138821A1
The present invention relates to a current multiplier primarily in the field of power conversion. The invention relates to a controlled current multiplier with a resonant winding to assist with, for example, power conversion. In particul...  
WO/2017/134293A1
The present invention provides a power conditioning module (10) for connection between an AC power supply (16) and a load (24), comprising an AC power supply input (14) for connection to the AC power supply (16), whereby the AC power sup...  

Matches 1 - 50 out of 7,200