1. Department of Electrical Engineering, Federal Institute of the Triângulo Mineiro, Campus Patrocínio, Minas Gerais, Patrocínio, Brazil
2. Department of Electrical Engineering, Federal University of Triângulo Mineiro, Minas Gerais, Uberaba, Brazil
3. Faculty of Electrical Engineering, Federal University of Uberlândia, Campus Santa Monica, Minas Gerais, Uberlândia, Brazil