Dynamic Characteristic Analysis and Optimization for The Energy-Saving Contactor With Double Coils (国際セッションIS-EMD2005) -- (Contactors & Circuit Breakers)

概要

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In the optimum design of contactors, it is important to analyze the dynamic behaviors. In this paper, it proposes a new computational approach for analyzing dynamic characteristics of the energy-saving, double-coil contactor. According to the contactor's unique characteristic that it has two transferable coils, the paper builds two different sets of equations. One describes the period before the transfer position, and the other describes the period after the transfer position. The equations deal with the electrical circuit, electromagnetic field and mechanical system considering the influence of friction. In addition, the equations comprise two specific transfer functions that can be calculated by using 3-D finite element method, which takes nonlinearity of the core into account. The validity of the proposed method is confirmed by experiment. Finally, the paper gives an optimum design for the transfer position of the two coils. The result of the optimum design reduces both of the first and the second bounces of the movable contact.
社団法人電子情報通信学会の論文
2005-11-11