多电平高压变频器在双机拖动矿井提升机上的几种运行模式探讨

Discussion on the Working Mode of Multi-level High Voltage Inverter of Hoist in a Two-motor Driving Shaft

本文介绍了多电平高压变频器的特点和双机拖动矿井提升机的常见结构,探讨了双电机拖动运行的均转矩模式、单台变频器恒压频比同步拖动双电动机模式和单变频器全载半速运行模式的应用。

This paper introduces the characteristics of the multi-level high voltage in verter and the comm on structure of the two-motor drivi ng shaft hoist, and discusses the applicati on of the uniform torque mode of the two-motor driving shaft hoist, the constant voltage frequency ratio mode of single inverter driving two motors and the full-load and half-speed running mode driven by single inverter.