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Title Comparison and Analysis of Boost Converter Topologies for the DC/DC Converter in Hydrogen Fuel Cell Hybrid Railway Vehicle
Authors Dong-Hun Kang ; Il-Oun Lee ; Woo-Seok Lee ; Duk-Hyeon Yun
DOI 10.6113/TKPE.2020.25.4.269
Page pp.269-278
ISSN 1229-2214
Keywords Hydrogen fuel cell hybrid railway vehicle; 2-level interleaving boost converter; 3-level boost converter; Digital time delay; DC/DC converter
Abstract In this paper, two types of DC/DC converters in a hydrogen fuel cell hybrid railway vehicle system, which serve to charge high-voltage battery and supply power to an inverter for driving a driving motor, were compared and analyzed. A two-level interleaving boost converter and a three-level boost converter were compared and analyzed, and a theoretical design method was proposed to have an efficiency characteristic of over 95%. In addition, a digital controller design method considering the digital phase delay component of DSP (TMS320F28335) is presented. Finally, the validity of the theoretical design of the converter with 20kW power was verified through static and dynamic experiments respectively.