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

Joon-Hyoung Ryu, June-Hee Lee and June-Seok Lee
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Joon-Hyoung Ryu: Propulsion System Research Team, Korea Railroad Research Institute, 176, Cheoldo Bangmulgwan-ro, Uiwang-si 16105, Gyeonggi-do, Korea
June-Hee Lee: Propulsion System Research Team, Korea Railroad Research Institute, 176, Cheoldo Bangmulgwan-ro, Uiwang-si 16105, Gyeonggi-do, Korea
June-Seok Lee: School of Electronics and Electrical Engineering, Dankook University, Yongin-si 16890, Korea

Energies, 2020, vol. 13, issue 19, 1-14

Abstract: 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.

Keywords: propulsion inverter; PMSM drive; efficiency analysis; SiC inverter (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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