An approach to diagnose and remediate failures of Hall Effect sensors in BLDC motors

Abstract

The paper deals with an approach to diagnose and remediate the faults affecting the Hall Effect sensors equipping brushless DC (BLDC) motors. The proposed approach is basically made up of an algorithm capable to detect, identify and remediate the fault in any of the three BLDC motor Hall Effect sensors. Following the detection of the fault, pointed out by a sensors binary word “000” or “111”, the algorithm allows the identification of the faulty sensor. A dedicated procedure is implemented for the sake of reconfiguration of the Hall Effect sensors-based control strategy. Simulation works, carried out under different faulty scenarios, have proven the performances of the proposed approach.