Switching Frequency Determination of SiC-Inverter for High Efficiency Propulsion System of Railway Vehicle

This paper suggests the reasonable switching frequency determination method for achieving highest efficiency of the railway propulsion system consisting the silicon carbide (SiC) inverter and permanent magnet synchronous motor (PMSM). The SiC power device allows increasing the switching frequency of...

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Bibliographic Details
Published inEnergies (Basel) Vol. 13; no. 19; p. 5035
Main Authors Ryu, Joon-Hyoung, Lee, June-Hee, Lee, June-Seok
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.10.2020
Subjects
Efficiency
efficiency analysis
Inverters
Permanent magnets
PMSM drive
propulsion inverter
Propulsion systems
SiC inverter
Silicon carbide
Synchronous motors
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Summary:This paper suggests the reasonable switching frequency determination method for achieving highest efficiency of the railway propulsion system consisting the silicon carbide (SiC) inverter and permanent magnet synchronous motor (PMSM). The SiC power device allows increasing the switching frequency of the inverter because it has the small switching power loss. The total efficiency is taken into account for determining the switching frequency of SiC inverter in this paper. In the efficiency analysis of SiC inverter and PMSM, the PMSM drive control is considered with the hybrid switching method combined the synchronous PWM and asynchronous PWM. The result of the analysis shows the efficiency curve of propulsion system depending on the switching frequency. The switching frequency having the minimum power loss of propulsion system is selected based on the extracted power loss curve.
ISSN:1996-1073
1996-1073
DOI:10.3390/en13195035