EST - Trabalho de Conclusão de Curso Graduação
URI permanente para esta coleçãohttps://ri.uea.edu.br/handle/riuea/4795
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Item Método para redução de erros na resposta de transdutores de corrente do tipo bobina de rogowski(Universidade do Estado do Amazonas, 2018-04-24) Antonaccio, Giovanni Bessa de MelloThe present work aims to implement a method to reduce errors in the response of Rogowski’s coil type current transducers. It presentation is divided into three chapters. The first chapter, Theoretical Referential, presents the theoretical basis necessary for the development of this work: concepts of electromagnetism, current transducers, calibration, integrated energy meter ADE7758, microcontrollers, analog-digital conversion and the Lagrange polynomial interpolation method. The second chapter, Proposed Method, presents the steps and materials needed to reduce errors by means of a linearization process that consists of the interpolation of current values read by means of an electric current meter. The third chapter, Project Implementation and Obtained Results, describes the execution of what was proposed in the methodology and presents the analysis and interpretation of the results obtained. Lagrange’s interpolation method was used to obtain the equation describing the characteristic curve of the coil. By means of the expression obtained, it was possible to calculate its inverse equation and obtain a transfer function through which it became possible to fix the responses of the coil. Finally, in the conclusion, it was verified that the applied method is effective and the presented errors became smaller than 1%.