Most pumps and supporters operating in commercial and industrial applications are currently driven by AC induction motors. “ACIM”, which stands for “alternating electric permanent magnet synchronous motor current induction motor”, can be an asynchronous kind of motor that depends on electric current to turn the rotor. Torque is usually 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 often rotates at a lesser speed than the magnetic field. A “PMSM”, which stands for “permanent magnet synchronous engine”, depends on 
magnets to turn the rotor, which spins at the same rate as the PMSM’s inner rotating magnetic field.
There are some key differences among AC induction Motors and Permanent Magnet Synchronous Motors.