Most pumps and supporters operating in commercial and industrial applications are driven by AC induction motors. “ACIM”, which stands for “alternating current induction motor”, is an asynchronous kind of motor that relies on electric current to carefully turn the rotor. Torque is definitely produced by electric energy in the rotor. The electric current is produced through electropermanent magnet synchronous motor magnetic induction from the magnetic field of the stator windings. Within an ACIM, the rotor often rotates at a lesser speed compared to the magnetic field. A “PMSM”, which stands for “permanent magnet synchronous motor”, relies on magnets to turn the rotor, which spins at the 
same velocity as the PMSM’s inner rotating magnetic field.
There are some key differences among AC induction Motors and Permanent Magnet Synchronous Motors.