217906 ⎘
Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
Sub-classes:POWER CONVERSION SYSTEM AND CONTROL METHOD
#2Hybrid switch for substation and other applications and methods of operating same
#3Hybrid switch for substation and other applications and methods of operating same
#4Thyristor starter
#5Power conversion device
#6Method for controlling controllable power semiconductor switches of a converter assembly with a plurality of switching modules having controllable power semiconductor switches, and a converter assembly with a control system configured for performing the method
#7Universal input electronic transformer
#8Device and method for extinction angle control of HVDC system
#9Matrix converter system with current control mode operation
#10True DC current source
#11Series circuit arrangement of power semiconductors
#12Grounding scheme for power conversion system
#13Power generation system for self activation
#14Power conversion device with protective operation
#15Multi-level inverter
#16Power conversion device
#17Wind power converter device and converter device
#18Frequency converter
#19Semiconductor switching circuit
#20Power conditioning units
#21Control device in HVDC system and operating method of thereof
#22Direct current transmission inverter side frequency control method
#23Converter for symmetrical reactive power compensation, and a method for controlling same
#24APPARATUS AND METHOD FOR REDUCING HARMONICS
#25Power conversion device and power conversion method for power conversion device
#26Circuit for direct energy extraction from a charged-particle beam
#27Inverter test apparatus
#28Inverter device
#29Universal input electronic transformer
#30Power converter and air conditioner
#31Power conversion device
#32Power conditioning units
#33System for controlling an electrical load
#34HVDC series current source converter
#35Phase leg arrangements for multilevel active rectifiers
#36Semiconductor switching circuit
#37System and method for operating power converters
#38Semiconductor switching string
#39Method and circuit for the improved use of capacitance in an intermediate circuit
#40Wind power converter device and converter device
#41High voltage direct current transmission system and control method thereof
#42Variable speed drive for subsea applications
#43DC power source and associated methods of operating same to efficiently supply a specification-compliant output voltage
#44DC voltage detector and power converter using the same
#45Ground fault detecting circuit and power converting device including the same
#46Method for operating a converter circuit
#47Isochronous wind turbine generator capable of stand-alone operation
#48Protective circuitry for insulation damage due to failure of intermediate circuit capacitors
#49Method and system for controlling hydroelectric turbines
#50Method and system for controlling hydroelectric turbines
#51Harmonics suppression in a power delivery device
#52Universal voltage converter and inductive power coupling
#53Differential mode and common mode choke
#54Method and system for controlling hydroelectric turbines
#55Method for generating a digital signal
#56Systems and methods for overvoltage protection of power converters
#57Assembly for converting an input AC voltage to an output AC voltage
#58Power condition units with MPPT
#59Method and system for controlling a DC link voltage of a power converter connecting an electric generator of a wind turbine with a power grid
#60Power supply system
#61Circuit for direct energy extraction from a charged-particle beam
#62Frequency converter
#63Power conditioning units
#64Power conversion apparatus for electric vehicle
#65Variable speed drive for subsea installations, vessels, and/or vehicles
#66Refrigerator and operating method thereof
#67Twelve-pulse HVDC transmission
#68Heated frequency converter assembly
#69Low loss propulsion system
#70Bi-directional energy conversion system
#71Method and system for producing controlled frequency power from a variable frequency power source
#72Harmonic control and regulation system for harmonic neutralized frequency changer
#73Power conversion apparatus and short circuit protection circuit and method of capacitor thereof
#74System and method for operating a power converter to improve IGBT reliability
#75Reduced semiconductor device power cell voltage drive
#76System and method of implementing a brushless variable transformer
#77AC link converter switch engine