On-line Monitoring of the Operating Condition of the Three-Phase Induction Motor

Abstract

Three-phase induction motors are subject to a wide range of operating conditions that can cause accelerated electrical, mechanical and thermal wear, resulting in financial losses due mainly to unexpected production line stoppages and unscheduled corrective maintenance of the motors. In this sense, continuous real-time monitoring, together with early detection, is an interesting tool for reducing maintenance costs. To this end, this paper presents the development of a real-time diagnostic system for inter-turn short-circuit faults, mechanical faults and broken bars in three-phase induction motors. The methodology is based on the use of the Evolving Monitoring Processes Framework to detect an anomaly and indicate the root cause of the problem in this equipment. The results demonstrated the scientific and technological viability of applying the developed technique as a real-time monitoring tool for induction motor operating conditions. The aim is to help the maintenance sector make more accurate decisions based on data, thus improving predictive maintenance strategies, increasing reliability, machine availability, maintaining performance and projected initial useful life, and consequently improving the industry's profitability.