Title :
High-voltage tapped-inductor buck converter auxiliary power supply for cascaded converter submodules
Author :
Modeer, Tomas ; Norrga, Staffan ; Nee, Hans-Peter
Author_Institution :
Dept. of Electr. Energy Conversion, KTH R. Inst. of Technol., Stockholm, Sweden
Abstract :
This paper firstly presents a discussion of the requirements for an auxiliary power supply for high-power modular multilevel converter submodules. Next, some of the most challenging problems in designing a low power high voltage step-down converter are presented. Further, a suitable topology, the tapped-inductor buck converter, that overcomes most of the problems is analyzed. Both analytical expressions describing the operation and circuit simulations are presented. Finally, an experimental evaluation of a 3 kV, 100W prototype converter utilizing an autonomous high-voltage switch is presented.
Keywords :
HVDC power convertors; high-voltage techniques; inductors; power supply quality; switches; switching convertors; autonomous high-voltage switch; auxiliary power supply; modular multilevel converter submodule; power 100 W; step down converter; tapped inductor buck converter; voltage 3 kV; Inductors; Logic gates; Snubbers; Switches; Topology; Zero voltage switching;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2012 IEEE
Conference_Location :
Raleigh, NC
Print_ISBN :
978-1-4673-0802-1
Electronic_ISBN :
978-1-4673-0801-4
DOI :
10.1109/ECCE.2012.6342417
