基于三电平直接转矩控制的矿用提升机变频调速系统研究

摘要

根据矿井提升机的工作特性及变频器在提升系统中的重要应用,提出了用直接控制转矩的变频调速系统替代传统的控制矢量调速系统.在系统输入侧选用三电平配置,并在逆变过程中采用IGCT晶闸管提高开关频率,提高了系统可靠性,并对系统的运行情况进行了仿真,同时配套多种保护措施使设备运行安全稳固.%According to the working characteristics and inverter's important application in mine hoist lifting system, this article proposes the motor speed freguency control system of the direct control torgue instead of the vector control system. Three level configuration is selected on the input side of the system and the IGCT thyristor is used in invering process to improve switching frequency and enhance the system reliability. It also simulates the operation of the system and takes various protective measures to make equipment operate safetly.