Title :
Dynamic model for harmonic induction motor analysis determined by finite elements
Author :
Papazacharopoulos, Zachos K. ; Tatis, Konstantinos V. ; Kladas, Antonios G. ; Manias, Stefanos N.
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Greece
fDate :
3/1/2004 12:00:00 AM
Abstract :
This paper presents a methodology for a convenient modification of induction motor equivalent circuit parameters, taking into consideration switching frequency iron losses in case of inverter supply. The method is based on the determination of harmonic iron losses in laminated iron cores under nonsinusoidal excitation by using a particular three-dimensional (3-D) finite-element model adopting a reduced scalar potential formulation. Eddy currents in iron laminations are considered by means of convenient surface current densities. Experimental verification is performed in case of a 20-kW experimental setup.
Keywords :
PWM invertors; current density; eddy current losses; equivalent circuits; finite element analysis; harmonic analysis; induction motors; machine theory; magnetic cores; 20 kW; Eddy current; PWM induction motor; dynamic model; harmonic induction motor; inverter supply; laminated iron core; motor equivalent circuit parameter; nonsinusoidal excitation; reduced scalar potential formulation; surface current density; switching frequency iron losses; three-dimensional finite element model; variable voltage variable frequency three-phase power supply; voltage-source sinusoidal pulse-width modulated inverter; Current density; Eddy currents; Equivalent circuits; Finite element methods; Harmonic analysis; Induction motors; Inverters; Iron; Lamination; Switching frequency;
Journal_Title :
Energy Conversion, IEEE Transactions on
DOI :
10.1109/TEC.2003.821825
