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

Volume

19

Issue

1

fYear

2004

fDate

3/1/2004 12:00:00 AM

Firstpage

102

Lastpage

108

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;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/TEC.2003.821825

Filename

1268125