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大容量GTO变频系统是当今世界上大容量电气传动中的领先技术。介绍了该系统的原理、特点和应用，评价了该技术的优越性。该变频技术在新日铁、宝钢等钢厂轧机主传动系统的应用，产生了巨大技术和经济效益。
High-capacity GTO frequency conversion system is the world’s leading technology in high-capacity electric drive. The principle, characteristics and application of the system are introduced, and the superiority of the technology is evaluated. The frequency conversion technology in the Nippon Steel, Baosteel and other steel rolling mill main drive system has generated tremendous technical and economic benefits.