BLDC motors are found in many applications including industrial control, automotive systems and in the office or home. BLDC motors power electric fans, air conditioning pumps as well as controlling the moving parts in devices such as printers.
Efficiency is a consideration in almost every application, either due to rising energy costs or the limited availability of power (in a battery-powered application for example). Thus BLDC motors are required to operate at maximum efficiency irrespective of the rotational speed or torque. When used in close proximity to people - especially in office or home applications - a low level of acoustic noise is another key requirement.