Difference Between Brushed DC Motor and Brushless DC Motor

You have many choices available when it comes to picking the right DC motor technology depending on your application. Most of the time, we never understand that which motor is suitable for the application acoording with Speed, torque, cost and many more. In this blog, we are discussing about the difference between Brushed DC motor and Brushless DC motor which helps you to choose exact motor for your applications. 

What is a Brushed DC Motor?

Brushed DC motors are one of the simplest types of DC motor. It typically consists of a pair of permanent magnets named as the stator and a motor coil named as the rotor connected to a commutator. In this motor, armature winding is on rotar and permanent magnets are always on the stator. The current-carrying conductors always locates on the turning part. practically, these conductors get power from direct current power source. It uses metallic brushes (which rotate along with the rotor) to transfer the current to the coil.  Though these motors are quite efficient but they require periodic maintenance of brushes.

Brushed motors use mechanical commutation of the windings via brushes instead of a controller to switch current in the windings. The brushes charge the commutator inversely in polarity to the fixed magnet, causing the armature to rotate. When these windings get energized, they produce a magnetic field whose attraction and repulsion keeps the rotor turning. As the rotor turns, the windings are constantly being energized in a different sequence so as to keep the rotor rotating within the stator filed.

Brushes presents inside the electric motors use to deliver current to the motor windings through commutator contacts.

What is a Brushless DC Motor?

As their name implies, Brushless DC motors do not use brushes. Brushless DC motors do not make use of commutation to regulate the current flow inside the coils. It uses Electrical commutation to deliver the current which produces an AC electric signal causing the motor to drive.

In this motor, the permanent magnets attach to the rotor. And the current-carrying conductors or armature windings are located on the stator. Unlike brushed motors, they use electrical commutation to convert electrical energy into mechanical energy.