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.
The paper presents a drive model with an induction motor fed by DTC converter. The application of the rotational speed fuzzy controller in the control system drive was proposed. The general rule base and the tuning procedure for the Mamdani fuzzy controller was presented. The simulation tests of the drive model were carried out during start-up, braking and reverse. The results of simulation tests are presented as time characteristics of the stator current, the rotor speed, the electromagnetic torque and the reference torque. Streszczenie. W artykule przedstawiono model napędu z silnikiem indukcyjnym zasilanym przez przekształtnik DTC. W układzie sterowania napędu zaproponowano zastosowanie regulatora rozmytego prędkości obrotowej. Przedstawiono ogólną formułę bazy reguł oraz procedurę strojenia dla regulatora rozmytego typu Mamdaniego. Przeprowadzono badania symulacyjne modelu napędu podczas rozruchu, hamowania oraz rewersu. Rezultaty badań zaprezentowano w postaci przebiegów czasowych prądu stojana, prędkości wirnika, momentu elektromagnetycznego oraz momentu odniesienia. (Zastosowanie regulatora rozmytego w układzie bezpośredniego sterowania momentem silnika indukcyjnego).
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