摘要
在用于矿井提升的发电机—电动机系统中,存在着由于发电机励磁饱和非线性变化引起的自持振荡;这种自振现象必须控制在允许范围内,否则将留下安全隐患。本文论述了有给定、有恒定负载情况下的自持振荡,得出了其振幅值随给定和负载的增大而减小的结论,最后使其达到恰好克服静摩擦力的最佳状态。
In the generator-motor system for hoisting in mine shaft exists a self-sustained oscillation caused by nonlinearity of excitation saturation of generator.This self-sustained oscillation must be controlled within a permissible range,otherwise it will leave hidden troubles for safety.This paper discussed the self-sustained oscillation with a given constant load and concluded that the value of the oscillation will reduce with the increase of given load,thus it can be made up to the optimum status just for overcoming static friction.
出处
《矿业研究与开发》
EI
CAS
1999年第6期18-21,共4页
Mining Research and Development
关键词
矿井提升
发电机
电动机
恒定负载
提升系统
Mine shaft hoisting,Power system,Constant load,Self-sustained oscillation