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本文论述了转差频率控制的异步电动机变频调速的基本控制规律和系统的构成。并通过对电流、速度双闭环调速系统的实验和调试,说明了该系统在一定程度上有类似于直流双闭环的静、动态特性。因而属于高性能的控制系统。
This paper discusses the slip frequency control of asynchronous motor frequency control speed of the basic rules and the composition of the system. And through the experiment and debugging of the current and speed dual closed-loop speed control system, it shows that the system has the static and dynamic characteristics similar to the DC double-closed loop to a certain extent. Which belongs to high-performance control system.