I know that low voltage damages AC induction motors and usually under voltage protection relays are used to trip the motor in such conditions. But the theory behind that is confusing to me. After searching on the internet I found the below answer (still not clear enough for me.)
P=VI, motors are manufactured to deliver the power P. Since V reduces, to keep P constant, the current gets increased and damages the motor.
If this statement is correct supplying low voltage to a bulb should result in lighting it more brighter.
In a motor, the magnetic flux is the component which creates the rotational force, and magnetic flux depends on the amount of current flowing in the wire (not the voltage.) So my fact is if a high current flows through the stator coils is should create the required magnetic field and motor should work.
I know that I'm understanding something wrong here. Please, I hope an electrical engineer or some expert can help me understand the theory behind it.