Understanding The Difference Between Brushed & Brushless DC Motors!

When making a drone, one of the very first steps is picking the desired motor that fulfills all the requirements. There is a wide range of motors such as brushed, brushless DC motors, etc., on the market, including a broad variety of electric motors specially developed for use in designing drones. To get the perfect performance you need, it is imperative to try numerous motors and pick the most effective one according to the design of your drone. 

brushless dc motors

An Overview of a Brushed DC Electric Motor  

A brushed DC motor contains permanent magnets in its outer body along with a revolving armature. The revolving armature possesses an electromagnet named the 'rotor.' this motor's permanent magnets are fixed and known as the 'stator.'  

In this type of DC motor, whenever an electric current is supplied to the armature, the rotor rotates at 180 degrees. In order to move outside the initial 180 degrees, the electromagnet's poles must reverse. Carbon brushes get in contact with the stator as the rotor rotates, reversing the direction of the magnetic field and letting the rotor rotate 360 degrees.  

Advantages of Brushed DC Electric Motor  

Less Cost  

Compared to brushless DC motors, brush DC motors are inexpensive to manufacture & buy.  

Suitable for Industrial Environment  

Because of their high initial torque, brushed DC electric motors are also popular in the industrial environment.   

High Starting Torque  

A high torque brushed DC electric motor is the perfect choice for different applications that require fast getting up to speed. For instance, a high initial torque is necessary for applications such as caravan movers.  

An Overview of a Brushless DC Motor  

Like a brushed DC motor, a brushless DC motor alternates the polarity of the windings inside the motor. It is mandatorily an inside-out brushed motor, which completely erases the need for brushes. In a BLDC, electromagnets are placed on the motor, with permanent magnets present on the rotor. An electronic speed controller reverses the direction of the electromagnet charge in the stator to promote the rotor to span 360 degrees.  

Advantages of Brushless DC Electric Motor  

Efficiency  

As there are no brushes, this motor has no speed loss, making it more efficient, usually 85-90%, compared with a brushed DC motor having 75- 80% efficiency.  

Longer Lifespan  

As aforementioned, brushes are absent in brushless DC electric, making it suitable for less maintenance as compared to its counterpart, i.e., Brushed DC motor.  

Quite Operation  

Due to the lack of brushes, BLDC motors work quietly and perform their operations smoothly.   

Wrapping Up 

In this write-up, we tried to give an overview of brushed and brushless DC motors and their advantages. Based on that, you can select the one that fulfills all your industry's needs. If you find our article informational, you can check out our other articles & blogs as well. If you have suggestions regarding the other content you would love to see, you can share your ideas in the comment section.  

Location: United States

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