Electric Motor fault diagnosis in EVs.
BY AFZAL YOUSAF Electric motor is considered as the HEART of the EVs as is the main motive element. Even though maintenance in electric vehicles especially in motor is very less but faults can occur like any other materials. Main parts of the motor are Stator, Rotor, Bearing, Shaft, Poles, Yoke, electrical connection etc. And possible electric faults that can occur in a motor are:- Electrical faults Mechanical faults In Electrical fault, Major faults are Rotor related faults and Stator related faults. And in Mechanical section, usual faults are Bearing faults and Eccentricity-related faults . These faults can be summarised by the location of the fault occurrence. Rate of occurrence of the above faults are shown below in the pie chart. From above we can see the Bearing faults and Stator related faults are the most common faults in Electric motor. And when we take a deeper look on the specific faults that occurs during these faults are listed below. Rotor related faults - In rot