Navegando por Autor "Souza, Guilherme Henrique de Carvalho"

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Controle vetorial de velocidade em motor de indução trifásico para aplicações em mobilidade elétrica
(2024-03-08) Souza, Guilherme Henrique de Carvalho; Méllo, João Paulo Ramos Agra; http://lattes.cnpq.br/2430890141645755; https://lattes.cnpq.br/6351499728705848
The replacement of combustion engines with electric motors is already a reality in Brazil. Hybrid and electric vehicles are gaining more market share every day. This is due to their high efficiency, low cost and, above all, the fact that they do not emit polluting gases into the environment. The study of induction motors for vehicle traction has become a challenge for researchers, who are looking for methods and strategies to maximize their market entry. Speed control of electric motors can be carried out in various ways, such as changing the number of poles, vector control, changing the frequency and supply voltage. Vector control is based on the odq variable transform, which is a good representation of the three-phase induction machine in the vector domain. Through this control, it is possible to decouple the machine's conjugate and magnetic flux, allowing each of them to be explored in isolation. The aim of this work is therefore to develop a closed-loop quadrature vector control system for the electric motor used in the Evolt Racing extension project. This study begins by validating the machine model and the open-loop controls, and then closing the control loop. Finally, the motor is driven via PWM inverter and the braking profiles and methods are compared. The simulations were carried out using PSIM and MATLAB software, and the controllers were tuned using the geometric root locus method. It was possible to validate the machine model, tune the controllers to improve the dynamic response and control the motor speed for the permanent regime.