Elimination of the influence of supply mains low-quality parameters on the results of induction motor diagnostics

Author

Zagirnyak, M.V. ; Mamchur, D.G. ; Kalinov, A.P.

Author_Institution

Electr. Machines Dept., Kremenchuk Mykhailo Ostrogradskii State Univ., Kremenchuk, Ukraine

fYear

2010

fDate

6-8 Sept. 2010

Firstpage

1

Lastpage

6

Abstract

A method of induction motor voltages recalculation aiming at exclusion of components caused by supply mains dissymmetry and unsinusoidality from induction motor instantaneous three-phase power signal has been offered. The recalculation is made on the basis of the motor known electromagnetic parameters, taking into account the electromotive force induced in stator winding by rotor currents. The results of instantaneous power parameters computation proved efficiency of this method in case of supply mains voltage dissymmetry up to 20%. This method makes it possible to improve the accuracy of induction motor diagnostics based on the spectrum of currents and powers instantaneous values and can be developed to be used in vibrocharacteristeics analysis.

Keywords

electric potential; induction motors; rotors; stators; electromagnetic parameter; electromotive force; induction motor diagnostics; induction motor voltages recalculation; instantaneous power parameters; low-quality parameter; rotor current; stator winding; supply mains dissymmetry; three-phase power signal; unsinusoidality; Harmonic analysis; Impedance; Induction motors; Power system harmonics; Rotors; Stator windings; diagnostics; dissymmetry; induction motors; instantaneous power; monitoring; unsinusoidality;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines (ICEM), 2010 XIX International Conference on

Conference_Location

Rome

Print_ISBN

978-1-4244-4174-7

Electronic_ISBN

978-1-4244-4175-4

Type

conf

DOI

10.1109/ICELMACH.2010.5608071

Filename

5608071