Time-Domain Diagnosing Algorithm for Automatic Broken Rotor Bar Detection in Induction Motors

Induction motors are one of the most utilized electrical machines in the industry. Therefore, to guarantee their correct operation is of vital importance. During their operation life, the motor tends to fail, and one of the most studied faults in the literature is the broken rotor bar (BRB) condition, because it can occur without apparently affecting the motor operation. Then, opportune fault detection is desired. Many researches attempt to solve the problem. However, methodologies that can determine the motor condition in an automatic way are still required. The contribution of this work is to propose a low-complex algorithm to detect and to classify automatically the BRB fault, even in its incipient stage. The obtained results demonstrate that the proposed algorithm is efficient to distinguish between healthy, incipient, 1 BRB and 2 BRB conditions.