| 1. | In view of this situation this article has conducted research to the design of metallurgy auxiliary biography with the frequency conversion table electrical machinery first multianalysis to the frequency changer and the frequency conversion table electrical machinery movement characteristic is carried out , the voltage waveform harmonious which the frequency changer outputs is big , attacks in a big way , and the voltage climbing rate reaches as high as 6600v / mu s which is 20 times ordinary sine alternating voltage , the rolling mill auxiliary biography table set the extremely strict request to the electrical machinery ; its movement frequency is very low , rate frequency in 8 - 20hz ; the velocity modulation scope is wide , the lowest movement frequency lowers to 1hz , and the starting number of times is quite frequently , each hour reaches as high as 600 - 800 time , the impact shoulders in a big way , the overload capacity request is high
针对这一情况本文对冶金辅传用变频辊道电机的设计进行了系统研究。首先对变频器和变频辊道电机的运行特性进行详细分析,变频器输出的电压波形谐波大,冲击大,电压上升率高达6600v / s ,是普通正弦交流电压的20倍;轧机辅传辊道对电机提出了十分严格的要求:其运行频率很低,额定频率在8 - 20hz ;调速范围宽,最低运行频率低到0 . 5hz ,起动次数相当频繁,每小时高达600 - 800次,冲击负荷大,过载能力要求较高。 |
