Selected Problems of the Asynchronous Drive Control with the Three-Phase Soft-Start System

The paper presents a design of a computer measuring system for the recording and visualisation of selected parameters of an AC motor. Such parameters are characterised and the principles of their configuration are stated for a three-phase soft-start system. The measuring experiments were performed on the drive during the start-up. The results are represented as time characteristics of the phase to-phase voltage, of phase current and of rotational speed.