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