Matches 1 - 50 out of 157 1 2 3 4 >


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US20110096575 PLANT FOR TRANSMITTING ELECTRIC POWER  
A plant for transmitting electric power through HVDC comprises two converter stations interconnected by a bipolar direct voltage network and each connected to an alternating voltage network. Each...
US20110049994 WIND FARM HAVING A PLURALITY OF WIND ENERGY INSTALLATIONS  
The invention relates to a wind power plant (4) which consists of a nacelle (12) arranged on a tower (14), a rotor (28), a generator (16), a power converter (20) on the generator side, a power...
US20100046255 HVDC SYSTEM  
An HVDC network including a first station including a first converter, a second station including a second converter, each converter including non-extinguishable semiconducting elements. A first...
US20150124496 METHOD FOR CHARGING A DC LINK OF A WIND TURBINE POWER ELECTRONIC CONVERTER  
The present invention relates to a method for charging a DC link of a power converter included in a wind turbine generator, the wind turbine generator comprising a generator side converter...
US20130197704 DC CONNECTION SCHEME FOR WINDFARM WITH INTERNAL MVDC COLLECTION GRID  
Connection schemes for offshore power generation with an internal collection grid include a power generation system which includes a plurality of generator-rectifier subsystems. The scheme further...
US20120327693 HIGH VOLTAGE DIRECT CURRENT GENERATION AND TRANSMISSION BY A WIND TURBINE  
A wind turbine including a synchronous generator that converts rotary motion of a hub or rotor of the wind turbine to a variable frequency alternating current (AC) power. The wind turbine further...
US20110310641 METHOD OF UPGRADING A PLANT FOR TRANSMITTING ELECTRIC POWER AND SUCH A PLANT  
A plant for transmitting electric power through HVDC includes two converter stations interconnected by a monopolar direct voltage network and each having an alternating voltage side for feeding...
US20130141950 POWER CONVERTER AND INTEGRATED DC CHOKE THEREFOR  
A power conversion system and a DC link choke therefore are presented, in which a continuous core structure is provided with first and second legs around which four or more windings are located,...
US20130010504 POWER CONVERTER AND INTEGRATED DC CHOKE THEREFOR  
A power conversion system and a DC link choke therefore are presented, in which a continuous core structure is provided with first and second legs around which four or more windings are located,...
US20150263569 POWER SUPPLY ARRANGEMENT OF A WIND FARM  
A power supply arrangement adapted to provide auxiliary power to a wind farm that feeds into a HVDC transmission link is provided. The power supply arrangement has an auxiliary power supply to...
US20110141773 HVDC CONNECTION OF WIND TURBINE  
A method and apparatus for connection of a wind driven turbine generator to an HVDC transmission line is provided that does not require transformation of the wind generated AC voltage to a nominal...
US20120281441 CIRCUIT FOR CONVERTING A DIRECT CURRENT VOLTAGE TO AN ALTERNATING CURRENT VOLTAGE  
A circuit for converting a direct current voltage into an alternating current voltage includes a buck converter, a resonant DC voltage/DC voltage converter, a DC voltage/AC voltage inverter, and a...
US20110080758 PLANT FOR TRANSMITTING ELECTRIC POWER  
A plant for transmitting electric power comprises a direct voltage network for High Voltage Direct Current and at least one alternating voltage network connected thereto through a station. The...
US20140177292 MULTILEVEL VALVE FOR VOLTAGE SOURCED CONVERTER TRANSMISSION  
A method for transforming electric power from high voltage AC voltage and AC current to high voltage DC voltage and DC current and from high voltage DC voltage and DC current to high voltage AC...
US20150009724 Solar Power Conditioning Unit  
The present invention relates to a power conditioning unit for delivering power from a dc power source to an ac output, particularly ac voltages greater than 50 volts, either for connecting...
US20120039099 POWER CONDITIONING UNIT  
The present invention relates to a power conditioning unit for delivering power from a dc power source to an ac output, particularly ac voltages greater than 50 volts, either for connecting...
US20120033463 POWER CONDITIONING UNIT  
The present invention relates to a power conditioning unit for delivering power from a dc power source to an ac output, particularly ac voltages greater than 50 volts, either for connecting...
US20150263636 DISTRIBUTION TRANSFORMER  
Among other things, a distribution transformer and a technique for regulating voltage are provided for herein. The distribution transformer comprises at least three windings and at least two...
US20130044522 LOW WEIGHT 3-PHASE 5-OUTPUT WIRE POWER CONVERSION SYSTEM FOR MICRO-GRID  
A power conversion system eliminates output transformers and replaces them with a zig-zag transformer and a filter that provides a 3-phase 5-wire system with significantly reduced weight and size...
US20140347898 MODULAR MULTI-LEVEL POWER CONVERSION SYSTEM WITH DC FAULT CURRENT LIMITING CAPABILITY  
A power converter module is provided. The power converter module includes a first converter leg and a second converter leg. The first converter leg includes a first switching unit and a second...
US20090219737 TRANSMISSION SYSTEM AND A METHOD FOR CONTROL THEREOF  
An HVDC transmission system including a rectifier station and an inverter station each having a series connection of at least two converters. A by-pass DC breaker is connected in parallel with...
US20100091528 METHOD AND ARRANGEMENT TO REVERSE THE POWER FLOW OF A DIRECT CURRENT POWER TRANSMISSION SYSTEM  
A direct current power transmission system includes a first and a second converter station that are coupled to each other via a direct current link. Each converter station includes a first or...
US20140133196 CONVERTER  
A power electronic converter, for use in high voltage direct current power transmission and reactive power compensation, comprises at least one converter limb including first and second terminals...
US20130279211 Modular Multilevel Converter  
A power electronic converter for use in high voltage direct current power transmission and reactive power compensation includes at least one converter limb, which includes first and second DC...
US20150249400 CONVERTER  
A converter includes a DC link and at least one phase module that is electrically connected to the DC link and has a phase conductor (Lu) emerging from said phase module. The DC link has a...
US20140362618 POWER ELECTRONIC CONVERTER  
A power electronic converter for high/medium voltage direct current power transmission and reactive power compensation comprises a primary converter unit and an auxiliary converter unit, the...
US20120033461 CONTROLLING A HIGH-VOLTAGE DIRECT-CURRENT (HVDC) LINK  
The present disclosure is directed to a High Voltage Direct Current (HVDC) link with Voltage Source Converters VSC and interconnecting two power systems. A model-predictive control with a receding...
US20130182467 CONVERTER  
A voltage source converter comprising three phase elements defining a star connection in which a first end of each phase element is connected to a common junction; at least two converter limbs,...
US20140092650 POWER TRANSMISSION SYSTEMS  
An offshore wind farm includes a plurality of wind turbines connected to an onshore converter station by means of a distributed power transmission system. The power transmission system includes a...
US20140226374 CTL CELL PROTECTION  
A converter cell (110; 120) is provided. The converter cell comprises a capacitor (113; 123), a first (111; 121) and a second (112; 122) switching element connected in series, a first (114; 124)...
US20150244282 DIRECT AC POWER CONVERSION DEVICE  
A DC link has first and second power supply lines. A first rectifying circuit has a plurality of input terminals that input an AC voltage and a pair of output terminals connected to the DC link....
US20150256094 HYBRID HIGH VOLTAGE DIRECT CURRENT CONVERTER SYSTEM AND METHOD OF OPERATING THE SAME  
A hybrid HVDC converter system includes a DC bus, at least one capacitor commutated converter (CCC) and at least one self-commutated converter (SCC) coupled in series through the DC bus. The CCC...
US20140146583 HVDC CONVERTER WITH NEUTRAL-POINT CONNECTED ZERO-SEQUENCE DUMP RESISTOR  
A power electronic converter (30)is for use in high voltage direct current power transmission and reactive power compensation, the power electronic converter (30) including three phase elements...
US20100085783 METHOD AND SYSTEM TO INFLUENCE THE POWER GENERATION OF AN ADJUSTABLE SPEED GENERATOR  
A method and a system to influence the power generation of at least one adjustable speed generator. The system includes a first voltage source converter connected to a local AC bus. The local AC...
US20110170320 TRANSMITTING ELECTRIC POWER INTO A BORE HOLE  
A system for transmitting electric power into a bore hole, the system having an electric transmission line extending through the bore hole between an electric power source and a receiving station,...
US20150145252 HYBRID CONVERTER AND WIND POWER GENERATING SYSTEM  
The present invention discloses a hybrid converter and a wind power generating system, the hybrid converter comprising a voltage source converter, a line commutated converter and a line commutated...
US20070279947 High-Voltage Direct-Current Transmission Device  
A device for the transmission of a high-voltage direct current has a supply connection terminal for connecting an alternating current network that supplies energy and a consumer connection...
US20150256093 HYBRID HIGH VOLTAGE DIRECT CURRENT CONVERTER SYSTEMS  
A hybrid HVDC converter system includes at least one alternating current (AC) conduit, at least one transformer coupled to said at least one AC conduit, and at least one direct current (DC)...
US20130128629 HYBRID 2-LEVEL AND MULTILEVEL HVDC CONVERTER  
A voltage source converter is used in high voltage direct current power transmission and reactive power compensation. The voltage source converter comprises first and second DC terminals for...
US20130208514 CONVERTER FOR HVDC TRANSMISSION AND REACTIVE POWER COMPENSATION  
A power electronic converter for use in high voltage direct current power transmission and reactive power compensation comprises a plurality of switching elements interconnecting in use a DC...
US20140268927 VOLTAGE CONVERTER SYSTEMS  
A voltage converter system includes a first DC-AC voltage converter that converts a first DC voltage signal to a first AC voltage signal. A DC link converts the first AC voltage signal to a second...
US20100133901 Modular stacked subsea power system architectures  
A sub-sea power delivery system includes a plurality of modular power converter building blocks on each of the power source side and the sub-sea load side that are stacked and interconnected to...
US20100091527 TAPPING POWER FROM A HVDC TRANSMISSION SYSTEM  
An apparatus for tapping electric energy from an HVDC power transmission system includes at least one voltage source converter. The apparatus includes an intermediate ac network containing the...
US20130128630 METHOD OF CONTROLLING THE POWER INPUT TO A HVDC TRANSMISSION LINK  
Disclosed is a method of controlling the power input to a HVDC transmission link, which HVDC transmission link is connected to an AC power plant via a first voltage source converter and to AC grid...
US20090279328 HVDC SYSTEM AND METHOD TO CONTROL A VOLTAGE SOURCE CONVERTER IN A HVDC SYSTEM  
A method to control a voltage source converter in a HVDC system includes controlling a frequency and a voltage amplitude of an AC voltage generated by the voltage source converter independently of...
US20150009725 POWER CONVERSION CIRCUIT  
A converter to which an alternating current is inputted from an AC power supply rectifies the alternating current to output it to a DC link. An inverter is connected through the DC link to the...
US20140362619 HVDC Converter  
An AC-AC converter system includes transformer arrangements and HVDC converter units on primary and secondary sides of the system, respectively. The system exhibits first and second three-phase AC...
US20120069610 CONVERTER  
A multilevel voltage source converter for high voltage DC power transmission and reactive power compensation. The voltage source converter includes at least one phase element including a plurality...
US20150035284 POWER CONVERSION SYSTEM AND METHOD  
An exemplary power conversion system includes a first power conversion module, a second power conversion module, and a controller. The first power conversion module includes a first source side...
US20150001942 POWER SUPPLY METHOD AND APPARATUS  
Embodiments of the present invention disclose a power supply method, including: rectifying a second alternating current, and converting the second alternating current into a second high voltage...

Matches 1 - 50 out of 157 1 2 3 4 >