煤矿井下电动机满载启动时端电压的计算
The Calculation of Full Loaded Start-up Terminal Voltage of a Coal Mine Underground Electric Motor
摘要
在煤矿井下低压供电系统计算中,要校验电动机的起动,通常取电动机额定电压的0.75倍作为最小起动电压,对于空载起动的负载是满足要求的。但是,对于输送机类的负载,经常出现满载起动的情况,计算电动机最小起动电压应取0.9倍额定电压,解决起动困难,是切实可行的方法。本文用全阻抗法计算电动机在满载起动时的最小电压。
Abstract
The calculation of Low-Voltage coal mine power supply system includes the verification of electric motor＇s start-up conditions.Usually take 0.75 times of Rated Voltage as Minimum Start-up Voltage.This is sufficient for Empty Load,but as of the conditions
关键词
供电单元/起动阻抗/额定阻抗/起动电流/额定电流/电压损失Key words
electric supply uint/start-up impedance/nominal impedamce/start-up current/voltage loss引用本文复制引用
出版年
2011
NETL
NSTL
万方数据