Abstract
The paper proposes an explicite formula for determining the critical slip value of an induction squirel cage motor based upon five parameters. Three of these parameters - rated slip, rated and breakdown torque are known by catalogue data. Two missing parameters are the arbitrary slip between the rated and critical slip value and the corresponding torque value. These two parameters are to be experimentaly obtained. The breakdown torque value given by catalogue data is usually less accurate than the rated torque value. The proposed formula gives the possibility of analysing the error distribution of the critical slip value obtained from catalogue and measured data in comparison with the values obtained from the mechanical characteristic based on the physical parameters of an induction motor.
Highlights
Analitički postupak za određivanje vrednosti prevalnog klizanja asinhronog motora na osnovu pet parametara
Izraz (1) uz kataloški poznatu vrednost parametra Mpr sadrži dva parametra β i spr nepoznatih vrednosti za čije određivanje su potrebna dva uslova
Ovo je samo poseban slučaj opštije postavljenog zadatka određivanja spr na osnovu vrednosti Mpr, s1, M(s1), s2, M(s2), s1, s2 [s0,spr], tako da će izrazi za prevalno klizanje spr i parametar β biti izvedeni za ovaj opšti slučaj
Summary
Analitički postupak za određivanje vrednosti prevalnog klizanja asinhronog motora na osnovu pet parametara 2 Elektrotehnički institut “Nikola Tesla”, Univerzitet u Beogradu, Koste Glavinića 8a, 11000 Beograd, Srbija zarko.janda@gmail.com
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