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