A methodology for electromagnetic parameter estimation of an induction motor equivalent circuit based on the load curve test

Simplified algorithm for assessment equivalent circuit parameters of induction motors

“…Hence, ЭСe applТcabТlТЭв of sЮcС coeffТcТenЭs Тs resЭrТcЭed for a аТde range of moЭors. For ЭСe sake of УЮsЭТce, Тn ЭСТs groЮp of meЭСods sСoЮld be menЭТoned analвЭТcal approacСes are ЮsТng dЮrТng ЭСe on-lТne or specТal laboraЭorв ЭesЭs [13][14][15][16][17][18][19][20][21][22][23][24][25]. As ЭСe maТn dТsadvanЭage, ЭСe need for a correcЭТon coeffТcТenЭ Эo Тmprove precТsТon for dТfferenЭ moЭors, ЭСe resЭrТcЭed precТsТon and ТnСerenЭ ТnsЭabТlТЭв of resЮlЭs are ЭвpТcal for mosЭ of ЭСe analвЭТcal meЭСods from ЭСТs groЮp.…”

“…In scientific literature, various methods and different software have been described to determine AC motor parameters [1–39]. However, a universal solution to this problem is not achieved yet.…”

“…Hence, the applicability of such coefficients is restricted for a wide range of motors. For the sake of justice, in this group of methods should be mentioned analytical approaches are using during the on‐line or special laboratory tests [13–25]. As the main disadvantage, the need for a correction coefficient to improve precision for different motors, the restricted precision and inherent instability of results are typical for most of the analytical methods from this group.…”

Archives of Electrical Engineering

“…An alternative to the above mentioned IM mathematical models can be one elaborated on the basis of the expanded EC in relation to its classical counterparts. The variability of rotor electromagnetic parameters, in this case resulting from rotor deep bar effect, is approximated with the use of a parallel connection of two-terminal networks with constant lumped parameters [7][8][9][11][12][13][14][15][16][17]. The usage of the Rotor Multi-Loop Equivalent Circuit (RML-EC) involves the necessity to identify a greater number of electromagnetic parameters of a rotor EC than in the case of the classical T-EC.…”

“…The usage of the Rotor Multi-Loop Equivalent Circuit (RML-EC) involves the necessity to identify a greater number of electromagnetic parameters of a rotor EC than in the case of the classical T-EC. An identification process of these parameters can be carried out with the aid of selected optimization methods through minimization of the errors between some types of time responses [11], instantaneous input impedances [12], impedance frequency characteristics [8,9,[13][14][15][16] or torque-slip characteristics [17] of a considered machine and corresponding characteristics determined on the basis of IM mathematical models resulting from the RML-EC with the sought parameters.…”