论文部分内容阅读
日本东芝公司将全数控正弦波循环变频器供电的鼠笼式异步电动机采用于矿井提升机拖动系统,从1984年11月开始投入了工作运行。这台提升机升降矿石和作业人员,井深约2000m。吊挂罐笼的钢丝绳长达2000m,转矩稍有变化,钢丝绳就会发生振动。因此拖动电机多采用转矩脉动小的直流机。但直流机有换向器和电刷,不仅在维修保养上需要很多的劳动力,而且运行可靠性差。为此,采用了结构最简单的鼠笼式异步机。与主轴
Japan’s Toshiba Corporation will be fully CNC sine wave inverter power supply squirrel cage asynchronous motor used in mine hoist drag system, from November 1984 began to put into operation. This hoist lifts ore and crew, well depth of about 2000m. Rope hanging cage wire up to 2000m, a slight change in torque, the rope will vibrate. Therefore, drag the motor to use more torque ripple small DC machine. However, DC machines have commutators and brushes, which not only require a lot of labor for maintenance but also have poor operation reliability. To this end, the use of the structure of the simplest squirrel-cage induction machine. With spindle