Modelagem a parâmetros distribuídos de cabos de potência utilizados em acionamentos elétricos

Abstract

The Electromagnetic Transients Program (EMTP) based programs are suitable for cable modeling in the modal and phase domains. However, these models are intended to analyze electromagnetic transients when high-voltage cable systems are used in underground and overhead systems. This work aims to develop a computational model of power cable placed on the ground surface for electrical drives applications. These models include the distributed-nature and frequency-dependent parameters of the power cable. Such modeling, which is developed to be used in the PSCAD/EMTDC software, is very useful to analyze the over-voltage phenomena in pulse width modulated (PWM) drives. The model validation is performed through experimental analysis in the LAI (Laboratório de Aplicações Industriais) and LEAT (Laboratório de Extra-Alta Tensão) of the Electrical Engineering Department of the Universidade Federal de Minas Gerais.