1. Graduate Program of Electrical Engineering, Federal University of Espírito Santo, Vitória, Brazil
2. Bachelor Program of Mechanical Engineering, Federal University of Espírito Santo, Vitória, Brazil
3. Department of Physics and i3N and CICECO, University of Aveiro, Aveiro, Portugal
4. Graduate Program of Electrical Engineering and the Bachelor Program of Mechanical Engineering, Federal University of Espírito Santo, Vitória, Brazil