At present, the SiC devices have been widely concerned with the excellent characteristics of low switching losses, which can significantly improve the frequency of power electronic converters, and also have broad application prospects in the field of rail transportation. In this paper, through the establishment of 1500V powered subway auxiliary inverter loss model, the author estimated loss and efficiency of high frequency DC/DC and three-phase inverter under different switching frequency in SiC MOSFET and Si IGBT system, determined the switching frequency for reference in high frequency DC/DC and three-phase inverter, and the analysis shows that the application of SiC MOSFET can reduce the loss of the system, improve the efficiency of the system. Then the author built a simulation model of auxiliary converter model, verified the reliability of SiC filter, setted up a 40kW high frequency DC/DC module with the SiC device selection in this paper, and the module has the efficiency of 97.85% under rated power. The above work provides theoretical support and experimental support for the hardware construction of SiC auxiliary converter.
Development of auxiliary converter based on 1700V/325A full SiC MOSFET for urban rail transit vehicles
2017-08-01
733230 byte
Conference paper
Electronic Resource
English
Urban rail transit vehicle cleaning and maintaining auxiliary device
European Patent Office | 2024
|SIBAC - Modular converter system for urban mass transit, subway and heavy rail vehicles
British Library Conference Proceedings | 1999
|Negative Impedance Converter for Reducing Rail Potential in Urban Rail Transit
British Library Conference Proceedings | 2020
|