Title :
Dynamic Characteristic and Contact Bounce Analysis for an AC Contactor with PWM Controlled Coil
Author :
Liu, Yingyi ; Chen, Degui ; Ji, Liang ; Geng, Yingsan
Author_Institution :
Xi´´an Jiaotong Univ. Xi´´an, Xi´´an
Abstract :
In the optimum design of AC contactors, it is important to analyze the dynamic behavior. Moreover, movable contact and core bounces have remarkable effect on the lifetime of contactors. According to a kind of intelligent contactor with feedback mechanism, this paper builds two different sets of periodically inter-transferred equations. The equations describe the coupling of the electric circuit, electromagnetic field and mechanical system taking account of the influence of friction. And with virtual prototyping technology, the dynamic behavior of the contactor can be obtained. The paper introduces the contact resistance to investigate the bounce of the contact.
Keywords :
coils; contactors; AC contactor; PWM controlled coil; contact bounce analysis; dynamic characteristic; electric circuit coupling; electromagnetic field; feedback mechanism; intelligent contactor; inter-transferred equations; mechanical system; Coils; Coupling circuits; Differential equations; Electromagnetic coupling; Electromagnetic fields; Feedback; Friction; Mechanical systems; Pulse width modulation; Virtual prototyping; contact bounce; contact resistance; dynamic characteristics; intelligent contactor;
Conference_Titel :
Electrical contacts - 2007, the 53rd ieee holm conference on
Conference_Location :
Pittsburgh, PA
Print_ISBN :
1-4244-0837-7
Electronic_ISBN :
1-4244-0838-5
DOI :
10.1109/HOLM.2007.4318232
