Most pumps and supporters operating in industrial and industrial applications are currently driven by AC induction motors. “ACIM”, which means “alternating permanent magnet synchronous motor current induction motor”, is an asynchronous type of motor that depends on electric current to turn the rotor. Torque is certainly produced by electric current in the rotor. The electric energy is produced through electromagnetic induction from the magnetic field of 
the stator windings. Within an ACIM, the rotor always rotates at a lower speed than the magnetic field. A “PMSM”, which means “permanent magnet synchronous electric motor”, relies on magnets to turn the rotor, which spins at the same speed as the PMSM’s inner rotating magnetic field.
There are some key differences between AC induction Motors and Permanent Magnet Synchronous Motors.