Estimador de Conjugado Eletromagnético em tempo real a partir da Indutância Instantânea da Máquina a Relutância Variável

Abstract

This thesis proposes an innovative methodology for real-time estimation of electromagnetic torque in Switched Reluctance Machines (SRMs), using instantaneous inductance as the key parameter. The method is based on modeling the inductance surface generated by the rotor’s angular position and excitation current, resulting in a differentiable polynomial expression suitable for implementation on low-performance processors. From the estimated inductance, magnetic flux, power, and efficiency can also be calculated in real time. The work includes the development of analytical models, computational simulations, and experimental validation on a dedicated test bench under varying load, speed, and supply voltage conditions. The results confirm the feasibility and accuracy of the proposed method, highlighting its potential for industrial SRM control applications. The thesis also addresses the method’s limitations and suggests directions for future research.