Analyses of unbalanced voltages on startup transients of a three-phase induction motor using EMTP MODELS

Author

Wang, Li ; Liu, Lih-Shyh

Author_Institution

Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan

Volume

1

fYear

2000

fDate

2000

Firstpage

308

Abstract

This paper presents a novel scheme on startup transients of a three-phase induction motor under unbalanced voltages. The new simulation tool-the Electro-Magnetic Transients Program (EMTP) MODELS is employed to accurately simulate the transient behavior of an induction motor during startup. The three-phase voltages applied to the stator windings of the studied induction motor are controlled by respectively adjusting the magnitude and phase angle of phase a and keep the voltages of the other phases. The voltage unbalanced factor (VUF) of the three-phase source voltages can then be varied to examine the different values of VUF on a machine´s startup transients. Experimental results obtained from a laboratory 300 W induction machine supplied by a computer-controlled three-phase MOSFET inverter are also performed to confirm the feasibility of the simulated results

Keywords

EMTP; MOSFET; electric machine analysis computing; induction motors; invertors; starting; transients; 300 W; EMTP MODELS; Electro-Magnetic Transients Program; computer-controlled three-phase MOSFET inverter; phase angle adjustment; phase magnitude adjustment; simulation tool; startup transients; three-phase induction motor; three-phase source voltages; three-phase voltages; unbalanced voltages; voltage unbalanced factor; Computational modeling; EMTP; Induction machines; Induction motors; Inverters; Laboratories; MOSFET circuits; Stator windings; Transient analysis; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Society Winter Meeting, 2000. IEEE

Print_ISBN

0-7803-5935-6

Type

conf

DOI

10.1109/PESW.2000.849979

Filename

849979