Artigo Completo - Open Access.

# MATHEMATICAL MODELING FOR DYNAMIC ANALYSIS OF ELECTROMAGNETIC DEVICE - CONTACTOR

### Koltermannn, Paulo Irineu; Ortega, Jéferson Meneguin; Pereira, Valmir Machado; Rosa, Karen Thayná da; Rodrigues, Vanessa Braga; Morais, Leonardo Santos;

##### Artigo Completo:

Contactors are electromechanical devices composed of a set of springs, contacts and a magnetic circuit. When a voltage is applied to the coil, an electromagnetic force attracts the movable part with the fixed part, in order to effect the switching contacts. Although these structures are well known, a dynamic study is rather complex due to the presence of variable reluctance. AC contactors are fitted with copper rings - short circuit coil, and its electromagnetic effects combined with the primary coil. The modeling of the electrical equivalent circuit of the device, which meshes by applying the Law of voltage and current, differential equations related to the current principal and copper coil rings are obtained. Using Newton''s 2nd Law can obtain the equation of motion of the device, taking into account effects of springs and of course open and normally closed contacts. Their equations of state / state variables and solution of differential equations is used the Runge-Kutta 4th order are assembled. The electrical parameters are determined by finite element software and mechanical parameters obtained from the manufacturer. The interaction of electrical and mechanical forces promote the dynamic movement of the contactor. The results obtained by the simulation model denote good performance compared to the experimental values.

Palavras-chave: Modelagem Matemática, Contator, Análise Dinâmica, Dynamic Analysis, Mathematical Modeling, Contactor,

Palavras-chave: ,

DOI: 10.5151/mathpro-cnmai-0131

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##### Como citar:

Koltermannn, Paulo Irineu; Ortega, Jéferson Meneguin; Pereira, Valmir Machado; Rosa, Karen Thayná da; Rodrigues, Vanessa Braga; Morais, Leonardo Santos; "MODELAGEM MATEMÁTICA PARA ANÁLISE DINÂMICA DE DISPOSITIVO ELETROMAGNÉTICO - CONTATOR", p. 733-740 . In: Anais do Congresso Nacional de Matemática Aplicada à Indústria [= Blucher Mathematical Proceedings, v.1, n.1]. São Paulo: Blucher, 2015.
ISSN em b-reve, DOI 10.5151/mathpro-cnmai-0131

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