218025 ⎘
Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only for high voltage direct transmission link
IMAGE FORMING APPARATUS
#2CONTROLLABLE GRID INTERFACE FOR MICROGRIDS
#3Power Conversion System and Control Device for Same
#4Bipole power transmission networks
#5Electric power supply apparatus for a high-power user device
#6Electrical assembly
#7Assembly having a multilevel power converter
#8Relating to power converters
#9Method and system for evaluating stability of HVDC receiving end system, and storage medium
#10Method for operating a power converter
#11HIGH ENERGY PULSE ON A HIGH-VOLTAGE-DIRECT-CURRENT OFFSET
#12HVDC modular platform design
#13Control method for a parallel MMC unit of a LCC-MMC hybrid cascade converter station
#14Power transmission via a bipolar high-voltage DC transmission link
#15High energy pulse on a high-voltage-direct-current offset
#16Fault handling
#17Power transmission via a bipolar high-voltage DC transmission link
#18Dynamic stability analysis and control method for voltage sourced converter based high voltage direct current transmission system
#19Converter scheme
#20Controlling a voltage source converter in a DC system
#21Elimination of commutation failure of LCC HVDC system
#22High power grid system with thyristor controls
#23Power conversion system and method for pre charging DC-Bus capacitors therein
#24Power conversion device and power conversion system
#25METHOD AND SYSTEM FOR GENERATION AND DISTRIBUTION OF HIGH VOLTAGE DIRECT CURRENT
#26Bidirectional power valve and control method therefor and hybrid multi-terminal HVDC system using the same
#27Series compensation device applicable to double-circuit line
#28Power transmission network
#29Modulation method for DC to DC converters
#30Modular multi-stage converter
#31CONVERTER
#32Method and apparatus for controlling hybrid direct-current transmission system
#33Converter module for a multi-stage converter and method for operating said converter module
#34Power supply apparatus for supplying power to an external electrical load in HVDC power transmission systems
#35Power transmission network
#36HVDC modular platform design
#37Converter valve fault warning method and system
#38Elimination of commutation failure by hybrid HVDC system
#39Bipolar DC power transmission scheme
#40Electricity supply system for transport vehicle
#41Change of current return path in a bipole power transmission system
#42Controlling a power transmission network
#43High voltage direct current power transmission series valve group control device
#44Wind power converter device and converter device
#45Interface arrangement between an alternating current power system and a direct current power system with control of converter valve for fault protection
#46Current flow control assembly
#47Direct current transmission inverter side frequency control method
#48HVDC rectifier protection using estimated and measured power
#49Three wire DC transmission circuit with modulated pole
#50Voltage source converter
#51Stereoscopic DC-DC converter and grid interconnector
#52Power transmission network
#53Method for correcting electric power loss in an HVDC system
#54Insulation design apparatus of high voltage direct current transmission system
#55Modular embedded multi-level converter with midpoint balancing
#56High voltage direct current soft-start circuit
#57Wind power converter device and converter device
#58Power grid frequency flexible operation system and method using the same
#59High voltage direct current transmission system and control method thereof
#60High voltage direct current transmission system and control method thereof
#61Hybrid high voltage direct current converter system and method of operating the same
#62Hybrid high voltage direct current converter systems
#63AC line connector with intermediate DC link
#64Multi terminal HVDC control
#65Power converter with a first string having controllable semiconductor switches and a second string having switching modules
#66High voltage direct current (HVDC) converter system and method of operating the same
#67Multilevel power converter system and method
#68Grounding scheme for modular embedded multilevel converter
#69Power transmission systems
#70Power electronic converter for use in high voltage direct current power transmission
#71Double module for a modular multi-stage converter
#72AC/DC converter station operated in dependence of voltage of capacitor connected in series between AC/DC converter and AC network interface and a method of operating the same
#73Controlling an inverter device of a high voltage DC system for supporting an AC system
#74M2LC System Coupled to a Rectifier System
#75Method of upgrading a plant for transmitting electric power and such a plant
#76Closed-loop control method for an HVDC transfer installation having a DC voltage intermediate circuit and self-commutated converters
#77Method and arrangement to reverse the power flow of a direct current power transmission system
#78Control device for rectifier stations in a high-voltage DC transmission system
#79Converter for converting alternating voltage into direct voltage and conversely
#80Modular HVDC converter
#81Transmission system and a method for control thereof
#82DC power transmission system of voltage source converter using pulse-interleaving auxiliary circuit
#83Electric power converter
#84Attenuating harmonic current in power transmission lines
#85Three phase converting device and method for estimating capacitance