Estratégia para Redução da Corrente Eficaz em Motores BLDC Operando sob Falta de Fase Visando Amenizar o Desgaste do Motor

Abstract

This paper presents a strategy to reduce the current of the healthy phases for brushless DC motors (BLDC) in open-phase fault, avoiding the degradation of the motor and allowing the safe shutdown. After an openphase fault diagnosis, through an algorithm capable of detecting and identifying faults and phase returns of the BLDC motor in real time, a corrective action divided in three-steps is proposed. First, the traditional 120 • Six-Step operating method is changed for a switching