Stability evaluation of an electromagnetic contactor during voltage sag

Author

Chi, Chieh-Tsung ; Yin, Shih-An

Author_Institution

Dept. of Electr. Eng., Chienkuo Technol. Univ., Changhua

fYear

2008

fDate

17-20 Dec. 2008

Firstpage

571

Lastpage

576

Abstract

The objective of this paper aims at investigating the effects of the power disturbances, in particular, voltage sag upon the dynamic stability of an electromagnetic contactor. By using the basic definitions of passivity conditions or the energy-method, the dynamic stability of contactor can be easily identified by means of detecting the electrical-energy transferring direction during voltage sag. For performing the related qualitative analysis of the contactor, the numerical contactor model is first established based on the magnetic circuit analysis method. Several useful simulation results were conducted and shown that the dynamic stability of ac electromagnetic contactors was apt to be affected by voltage sag events. Finally, the proposed stability evaluation method for the contactor was ensured that it is feasible.

Keywords

contactors; electromagnetic devices; magnetic circuits; power supply quality; stability; dynamic stability; electrical-energy transferring direction; electromagnetic contactor; magnetic circuit analysis method; power disturbances; qualitative analysis; stability evaluation; voltage sag; Circuit analysis; Circuit simulation; Circuit stability; Contacts; Discrete event simulation; Magnetic analysis; Magnetic circuits; Numerical models; Performance analysis; Voltage fluctuations;

fLanguage

English

Publisher

ieee

Conference_Titel

Control, Automation, Robotics and Vision, 2008. ICARCV 2008. 10th International Conference on

Conference_Location

Hanoi

Print_ISBN

978-1-4244-2286-9

Electronic_ISBN

978-1-4244-2287-6

Type

conf

DOI

10.1109/ICARCV.2008.4795581

Filename

4795581