
For FullText PDF, please login, if you are a member of IEICE,
or go to Pay Per View on menu list, if you are a nonmember of IEICE.

Thermal Analysis of AC Contactor Using Thermal Network Finite Difference Analysis Method
Chunping NIU Degui CHEN Xingwen LI Yingsan GENG
Publication
IEICE TRANSACTIONS on Electronics
Vol.E91C
No.8
pp.12861291 Publication Date: 2008/08/01
Online ISSN: 17451353
DOI: 10.1093/ietele/e91c.8.1286
Print ISSN: 09168516 Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electromechanical Devices(Selected Papers from ISEMD2007)) Category: Contactors & Circuit Breakers Keyword: AC contactor, thermal analysis, thermal network, finite difference method,
Full Text: PDF>>
Summary:
To predict the thermal behavior of switchgear quickly, the Thermal Network Finite Difference Analysis method (TNFDA) is adopted in thermal analysis of AC contactor in the paper. The thermal network model is built with nodes, thermal resistors and heat generators, and it is solved using finite difference method (FDM). The main circuit and the control system are connected by thermal resistors network, which solves the problem of multisources interaction in the application of TNFDA. The temperature of conducting wires is calculated according to the heat transfer process and the fundamental equations of thermal conduction. It provides a method to solve the problem of boundary conditions in applying the TNFDA. The comparison between the results of TNFDA and measurements shows the feasibility and practicability of the method.

