Based on my industry experience and my professor’s statement, I believe the three-phase Induction motor is the best motor.
The industry’s most reliable motor, the three-phase induction motor. The induction motor is the main mover for almost all industrial pumps and compressors.
It is very easy to maintain and provides high performance. This is what I have observed over the years in the industry.
The main problem with the induction motor is its ability to vary speed and load. The disadvantages are outweighed by the benefits.