The paper introduces the composition, principle and dynamical performances of the closed loop VVVF system using magneto electric pulse tacho apparatus to constitute the slip frequency control.
介绍采用磁电脉冲测速构成转差频率控制的闭环变频调速系统的组成、原理及动态性能。
Imported high magneto-conductivity steel strip, fine effectiveness for both low and high frequency.
进口高导磁钢带，低、高频屏效果均优。
Imported high magneto-conductivity steel strip, fine effectiveness for both low and high frequency.
进口高导磁钢带，低、高频屏效果均优。
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