Title :
High voltage IGBTs and medium frequency transformer in DC-DC converters for railway applications
Author :
Hoffmann, Holger ; Piepenbreier, Bernhard
Author_Institution :
Dept. of Electr. Drives & Machines, Friedrich-Alexander-Univ. of Erlangen-Nuremberg, Erlangen, Germany
Abstract :
A converter system made of series-connected converter submodules based on medium frequency (MF)-dc/dc converters can replace the conventional traction transformer that works at frequencies of 16.7 Hz or 50 Hz saving both mass and energy. Engaging multilevel topology permits the connection to the HV catenary with a line choke. MF switching performance of typical and dedicated 6.5 kV IGBTs was characterized and is given herein. The impact of chosen switching frequency and resonance frequency on transformer mass and transformer efficiency was analyzed with a coupled electromagnetic, thermal and hydraulic transformer calculation.
Keywords :
DC-DC power convertors; energy conservation; insulated gate bipolar transistors; power integrated circuits; power semiconductor switches; power transformers; railways; resonant power convertors; switching convertors; traction power supplies; DC-DC converter; MF switching; electromagnetic analysis; energy saving; frequency 16.7 Hz to 50 Hz; high voltage IGBT; hydraulic analysis; line choke; mass saving; medium frequency transformer; railway application; resonance frequency; series-connected converter submodule; switching frequency; thermal analysis; traction transformer; voltage 6.5 kV; DC-DC power converters; Electromagnetic coupling; Frequency conversion; Inductors; Insulated gate bipolar transistors; Medium voltage; Rail transportation; Resonance; Switching frequency; Topology; High voltage power converters; IGBT; medium frequency transformer; multilevel converter; rail vehicle; resonant converter;
Conference_Titel :
Power Electronics Electrical Drives Automation and Motion (SPEEDAM), 2010 International Symposium on
Conference_Location :
Pisa
Print_ISBN :
978-1-4244-4986-6
Electronic_ISBN :
978-1-4244-7919-1
DOI :
10.1109/SPEEDAM.2010.5542109
