Uma revisão sobre frenagem regenerativa em motores de indução trifásicos

Abstract

The three-phase induction motor plays an extremely important role in industry and is the most widely used type of electric motor in this sector. In this context, several aspects can be explored, among which regenerative braking stands out. This Undergraduate Final Project presents an review of the application of regenerative braking in three-phase induction motors, focusing on its operating principles, technical limitations, and energy recovery potential. Furthermore, this work is based on an exploratory, descriptive, and qualitative bibliographic research, grounded on the analysis of books, scientific articles, and technical datasheets. No practical experiments or computational simulations were carried out; the study was conducted exclusively using secondary data available in the literature. In particular, data from previous studies involving induction motors operating in generator mode during braking were analyzed. The results indicate that although regenerative braking does not allow for the full recovery of the consumed energy, a significant portion can be recovered, reaching values of approximately 15% to 30%, depending on operating conditions, application type, and the frequency of braking cycles. Therefore, regenerative braking in three-phase induction motors constitutes a viable alternative for improving energy efficiency in industrial systems and electric transportation. However, its physical, operational, and control-related limitations must be carefully considered in the design and application of such systems, highlighting the need for future studies employing experimental approaches and more detailed analyses.