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