Controle fuzzy aplicado ao inversor de frequência trifásico para tração elétrica

Abstract

Due to its versatility and low maintenance, the three-phase induction motor (IM) presents itself as one of the main driving forces in the industry. With the expansion of the electric vehicle industry, its great value for vehicle traction is observed. The motor can be started in different ways, for example, direct start, using a softstarter or with a frequency inverter. The use of the frequency inverter is the only one that offers full control of the motor, so it is ideal for automotive applications. Control methods can be classified into two types, vector and scalar, when vector control is applied correctly, the machine becomes a direct converter between current and torque. Due to the performance in nonlinear systems and difficult to model, as is the case of IM, a fuzzy controller was used. This work presents the development of a fuzzy controller for a three-phase vector frequency inverter, oriented to vehicular electric traction. In the course of the work, the mathematical modeling of the motor in the 𝑑 and 𝑞 axes was developed and the implementation of the controller to control the speed and torque of the machine, as well as the validation of the Project through simulations in the Matlab/Simulink software.