Solid-state transformer based locomotive AC-DC-AC traction system and method

• Main Authors: ZENG WENJUN, ZHAO ZHEN, CHEN LI, YUAN JIAXIN, CHEN BAICHAO
• Format: Patent
• Language: Chinese; English
• Published: 10.12.2014
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; VEHICLES IN GENERAL

The invention relates to a high-voltage SiC solid-state transformer based high-speed rail locomotive AC-DC-AC traction system, in particular to a solid-state transformer based locomotive AC-DC-AC traction system and method. Solid-state transformer modules made of SiC materials are adopted, and input sides of the transformer modules are in series connection while output sides are in parallel connection to form the high-speed rail locomotive AC-DC-AC traction system. Compared with traction transformers made of conventional semiconductor materials, solid-state transformers made of the SiC materials have the advantages that due to good power handling capability and frequency capability of the transformers, size and weight of the transformers can be reduced, load weight of a locomotive is reduced greatly, and good economical efficiency is realized; the input sides are in series connection while the output sides are in parallel connection, so that the high-speed rail locomotive traction system is easy to expand, th