Thermal Simulation of a Contactor with Feedback Controlled Magnet System

Liang JI  Degui CHEN  Yingyi LIU  Xingwen LI  

IEICE TRANSACTIONS on Electronics   Vol.E93-C   No.9   pp.1424-1430
Publication Date: 2010/09/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E93.C.1424
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices (Selected Papers from IS-EMD2009))
thermal analysis,  transient magnetic circuit,  intelligent AC contactor,  temperature field,  

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Similarities and differences of the thermal analysis issues between the intelligent and general AC contactors are analyzed. Heat source model of the magnet system is established according to the unique control mode of the intelligent AC contactor. Linking with the features common of the two kinds of contactors, the extension of the thermal analysis method of the general AC contactor to the intelligent AC contactor is demonstrated. Consequently, a comprehensive thermal analysis model considering heat sources of both main circuit and magnet system is constructed for the intelligent AC contactor. With this model, the steady-state temperature rise of the intelligent AC contactor is calculated and compared with the measurements of an actual intelligent AC contactor.