Application

As demand for high efficiency, low noise, and long service life continues to grow across home appliances, industrial equipment, medical devices, and automotive markets, motor technology has continued to evolve. Brushless DC motors (BLDC) have gradually replaced traditional brushed motors and become the mainstream choice in modern equipment.
This article explains the differences between brushless and brushed motors from the perspectives of operating principles, technical characteristics, and real-world applications, and explores why brushless motors are rapidly being adopted across various industries.

A brushed DC motor is a motor type with a relatively simple structure and a long history of use. It operates through mechanical commutation using carbon brushes in contact with a commutator. Due to its lower cost and straightforward control method, brushed motors were widely used in early home appliances and power tools.

・Carbon brushes wear over time and require regular replacement
・High-speed operation often generates noticeable noise and vibration
・Sparking and carbon dust may occur, affecting operational stability
・Shorter service life, making them unsuitable for long-term continuous operation

The key design feature of a brushless motor is the elimination of carbon brushes. Electronic controllers are used for commutation, allowing the motor to operate with virtually no physical contact or mechanical wear, significantly improving efficiency and reliability.

A typical brushless motor consists of a permanent magnet rotor, a wound stator, and an electronic controller responsible for current switching, enabling precise output control based on load requirements.

With the advancement of control technologies and increasing market demand, brushless motors are now widely used in a variety of equipment and have become core driving components for high-efficiency and high-reliability products.

・Precision motion control
・Long-term continuous operation
・Reduced equipment maintenance costs

・Air conditioners, fans, and vacuum cleaners
・Water pumps and air pumps
・Emphasis on energy efficiency and low-noise design

・High reliability requirements
・Low noise and stable output
・Designed for long-term operation

・Electric power steering systems (EPS)
・Window regulators, seat and lift modules
・Improved driving comfort and control precision

・High-precision positioning
・Long service life and high-efficiency operation

Brushless motors are not merely a replacement for brushed motors; they are a key technology that significantly enhances product efficiency, quiet operation, and overall reliability.
As market requirements continue to evolve, brushless motors are steadily becoming a critical core component across a wide range of equipment.