A brushless DC Motor is also known as BLDC or BL motor. Alternatively, they are also known as electronically commuted motors or synchronous DC Motors. These motors are powered by direct current using an inverter. In certain cases, such motors are powered by switching power supply which produces AC current hence driving each phase of the motor via a closed loop.
Speed and torque of the motor are controlled by a control unit which generates a pulse of current to achieve the desired result. Brushless motors have a high power to weight ratio, high speed, and electronic control. These motors serve a great purpose and are widely used in computer peripherals and power tools.
Construction of Brushless Motors:
A brushless or BLDC motor can be constructed in different configurations. Some of them are as follows:
In this configuration the permanent magnets are embedded in the rotor or in other words they are a part of the rotor itself.