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U radu je obrađena tema zaleta asinkronog kaveznog motora koristeći Matlab/Simulink. Analiziran je zalet asinkronog kaveznog motora na tri osnovna načina pokretanja: direktni zalet, zalet zvijezda-trokut i zalet promjenom napona i frekvencije napajanja primijenjeno na dva različita motora: motor 1 (600 W) i motor 2 (1250 kW). Korištena su tri modela za simulacije. Model 1 je razvio student prijašnje generacije koji je istraživao sličnu temu. Model 2 je preuzet s Matlabove stranice, a model 3 je kreiran uz pomoć informacija dostupnih na internetu. Modeli 1, 2 i 3 služe svojoj svrsi. Direktni zalet motora se izvršio na sva tri modela kao kontrola za usporedbu analize podataka. Model 2 se koristio za simulaciju zaleta pomoću zvijezda-trokut preklopke, a model 3 za simuliranje zaleta motora promjenjivim naponsko frekvencijskim napajanjem. Nakon izvršenih simulacija otkrivene su primjetne razlike u performansama dvaju motora, kao i odstupanja među modelima korištenima za simulaciju različitih načina pokretanja motora. Ova otkrića nude uvid u metode pokretanja i korištene modele za simuliranje asinkronih motora i postavljaju temelj za buduća istraživanja. The paper deals with the topic of start-up of an asynchronous squirrel-cage motor using Matlab/Simulink. We analyzed the effectiveness of the asynchronous cage motor in three basic starting modes: direct start, star-delta start and start by changing the voltage and frequency of the power supply applied to two different motors: motor 1 (600 W) and motor 2 (1250 kW). We used three models for our simulations. Model 1 was developed by a student of the previous generation who was researching a similar topic. Model 2 was downloaded from Matlab's website, and model 3 was created with the help of information available from the web. Each model served a specific purpose. A direct machine run was performed on all three models as a control for comparison of data analysis. Model 2 was used to simulate start-up using a star-delta switch, and model 3 was used to simulate start-up of a motor with variable voltage and frequency power supply. After the simulations, noticeable differences in the performance of the two machines were revealed, as well as discrepancies between the models used to simulate different machine start methods. These findings offer insight into the actuation methods and models used to simulate induction motors and lay the foundation for future research. |
