交-交变频调速系统中信号采集的滤波技术

Filter Technique in Signal Collection of Cycloconverter-fed Drive System

根据交-交变频调速系统中电量信号的谐波特性,设计了一种新型的有源滤波电路,使定子电量信号的采集更加精确。该电路克服了传统RC滤波器带来的相位滞后问题,从而提高了交交变频调速系统的实时性。实验结果表明,该滤波器是正确可行的。

A new active filter is designed in this paper ac cording to the harmonic character of the stator voltage in the cycloconverter-f ed speed regulating system. This filter overcomes the phase lag of the tradition al RC filter and makes the voltage collected more accurately. So the real-time performance of the speed regulating system is enhanced. The experiment results s how that the filter is correct and feasible.