Determinação das capacitâncias fuga em motores de indução através do método de elementos finitos

• Ano de defesa: 2011
• Autor(a) principal: Chaves, Camilla de Sousa
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Uberlândia; BR; Programa de Pós-graduação em Engenharia Elétrica; Engenharias; UFU
• Palavras-chave em Português: FEMM; Modelo de motor de indução para altas frequências; Capacitâncias de fuga; ATP; Correntes de modo comum; Induction motor model for high frequency studies; Leakage capacitances; Common-mode currents; CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA
• Link de acesso: https://repositorio.ufu.br/handle/123456789/14459

Purpose: to present a method, based in finite elements technique, to estimate leakage capacitances on induction motors for common mode studies. Material and Method: It was used the software FEMM (Finite Element Method Magnetics) to do the leakage capacitances computation through its geometric representation. In consequence, it was used some WEG induction motors to take the capacitances and to present a methodology of motor representation in FEMM. Moreover, it was necessary to analyze how the input parameters on FEMM affect the final results and how they interfere on the common-mode studies. Due to the impossibility of taking some leakage capacitances, it was used analytical formulations to calculate the capacitances and validate the methodology developed in this work. Results: after comparing the obtained values in FEMM with the measurements and analytical calculations, it was possible to verify the method effectiveness, being also highlighted with a study of the common-mode currents behavior. Conclusions: the finite elements method is a powerful tool to predict induction motor parameters to the common-mode study, being a valid alternative and sometimes more effective than the traditional method of measurements and calculation.