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J. Qu, Y. Zhang, X. Gao, J. Ma, Y. Lei, "A Power Electronic Transformer for Rail Vehicles Based on SiC", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 14.3, 2024, doi:10.4203/ccc.7.14.3

Keywords: silicon carbide, power electronic transformer, sine wave traction inverter, resonant converter, soft switching, power electronic.

Abstract

In order to realize the miniaturization and weight reduction of the traction drive system of rail vehicles and reduce the motor current distortion caused by the low switching frequency of the traditional converter during high-speed operation of the vehicle, an integrated converter consisting of a power electronic transformer and a sine wave traction inverter based on silicon carbide (SiC) is proposed. The system implementation scheme based on silicon carbide MOSFETs, the design scheme of high-frequency, high-power and high-insulation voltage-resistant magnetic isolation, and the communication design scheme of low-latency system are given, and the input and output characteristics of the system are analyzed by simulation. The results show that the total harmonic distortion rate of the input current is less than 1 %, the power factor is greater than 0.99, and the output voltage total harmonic distortion rate is less than 3.50% when the rated power is 3.25 MVA. The system efficiency is greater than 97.5%, which is higher than the efficiency of the traditional traction drive system by 3 % ~ 5%.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 7 PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 14.3 A Power Electronic Transformer for Rail Vehicles Based on SiC J. Qu, Y. Zhang, X. Gao, J. Ma and Y. Lei State Key Laboratory of High-speed Maglev Transportation Technology, CRRC QINGDAO SIFANG CO., LTD, China doi:10.4203/ccc.7.14.3 Full Bibliographic Reference for this paper J. Qu, Y. Zhang, X. Gao, J. Ma, Y. Lei, "A Power Electronic Transformer for Rail Vehicles Based on SiC", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 14.3, 2024, doi:10.4203/ccc.7.14.3 Keywords: silicon carbide, power electronic transformer, sine wave traction inverter, resonant converter, soft switching, power electronic. Abstract In order to realize the miniaturization and weight reduction of the traction drive system of rail vehicles and reduce the motor current distortion caused by the low switching frequency of the traditional converter during high-speed operation of the vehicle, an integrated converter consisting of a power electronic transformer and a sine wave traction inverter based on silicon carbide (SiC) is proposed. The system implementation scheme based on silicon carbide MOSFETs, the design scheme of high-frequency, high-power and high-insulation voltage-resistant magnetic isolation, and the communication design scheme of low-latency system are given, and the input and output characteristics of the system are analyzed by simulation. The results show that the total harmonic distortion rate of the input current is less than 1 %, the power factor is greater than 0.99, and the output voltage total harmonic distortion rate is less than 3.50% when the rated power is 3.25 MVA. The system efficiency is greater than 97.5%, which is higher than the efficiency of the traditional traction drive system by 3 % ~ 5%. download the full-text of this paper (PDF, 9 pages, 907 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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