变频技术在塑料挤出机控制系统中的应用研究

挤出成型是塑料成型加工的重要方法之一,在塑料挤出机控制系统中采用变频调速技术具有降低生产能耗、提高生产率和产品质量、减少启动时对电网的冲击等优点。本文分析了塑料挤出机的工艺流程,介绍了挤出机变频控制原理,阐述了变频技术矢量控制的方法,针对MD380系列变频器进行了参数设置。实际应用表明,该系列变频器具调速精度高、调速范围宽、运行稳定等特点,满足挤出机生产的各项工艺要求。

Application of Frequency Conversion Technology in Control System of Plastic Extruder

Extrusion is one of the important methods in plastic forming.The application of frequency conversion speed regulation technology in the control system of plastic extruder has the advantages of reducing energy consumption,improving productivity and product quality,and reducing the impact on power grid when starting.This paper analyses the technological process of plastic extruder,introduces the principle of frequency conversion control of extruder,expounds the method of vector control,and sets parameters for MD380 series frequency converter.The practical application shows that this series of frequency converters have the characteristics of high speed regulation accuracy,wide speed regulation range and stable operation,which can meet the technological requirements of extruder production.