Brushless direct current motors are also referred to as BLDC motors, which are commutated motors that do not feature carbon brushes. Instead of brushes, a controller issues pulses of power to the motor which can dictate both the speed, and torque power. 

BLDC motors are extremely efficient at producing lots of torque spread over a range of different speeds. Brushless motor house permanent magnets which move around a stagnant armature, thus overcoming the issue of connecting the armature to the current supply. BLDC motors are renowned for delivering smooth operation. 

1.Inner workings:

In order to fully appreciate the functionality and benefits of a brushless DC motor, it is important to first understand how a brushed motor functions. Brushed motors have permanent magnets which are located on the outside of their housing and have an interior rotating armature that’s made of coils that act as electromagnets. A magnetic field is generated by the electromagnets in the armature when current is supplied, which in turn rotates the armature. To maintain the rotation on the armature, the brushes frequently change their polarity.

A rotor and a stator are two fundamental components of the brushless motor. The rotating rotor has magnets located on it while the stator, which contains the windings, is stationary. Inside a brushless DC motor, electromagnets are moved to the stator by the permanent magnets connected to the rotor.

2.  Interior:

One variation of the BLDC motor has an inner rotor. Here, the stator winding encompasses the rotor, which is located in the core of the motor. A main benefit of the inner rotor design is its ability to easily dissipate heat.

This design also produces a high amount of torque.

3. Exterior:

The second variation of a BLDC motor features an outer rotor. Here, the core of the motor is surrounded by the rotor. This arrangement has a low cogging torque and can be operated with reduced current. 

Brushless Motors are incredibly efficient because their speed is defined by the amount of current provided. Another key advantage of the BLDC motor is that because there are no brushes used for commutation, brushless Motors have a longer serviceable life. Furthermore, energy loss due to friction is reduced, which enhances overall efficiency. 

If you are seeking brushless DC motors for your high performance application, contact ISL Products. ISL Products are one of the country’s topmost motor solution providers and they continue to deliver enhanced performance and reliability throughout their whole range of cost effective brushless DC Motors. 

With over 40 years in the industry, ISL Products continues to be a leading manufacturer of electromechanical components. 

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