Brushless DC Motor for Automatic Doors | High Efficiency & Long Life
Introduction
Automatic door systems have evolved dramatically over the past decade. At the heart of this progress is the Brushless DC Motor (BLDC) — a technology that combines precision, efficiency, and longevity.
Unlike traditional brushed motors, which rely on mechanical contact to deliver power, BLDC motors use electronic commutation. This eliminates the friction, wear, and inefficiency common in older designs.
For Digital Home Systems, the integration of brushless DC motors represents a leap forward in door automation, enabling smoother, quieter, and more energy-efficient performance in models such as the Automatic Swing Door Opener 250kg. Whether in smart homes, hospitals, or commercial buildings, this motor ensures dependable motion control with minimal maintenance.
What is a Brushless DC Motor?
A Brushless DC Motor is an electronically controlled motor that operates without physical brushes. Traditional DC motors use brushes to transfer electrical current to the rotor, which leads to wear and periodic maintenance. BLDC motors replace this with an electronic controller that switches current in the stator windings, generating a rotating magnetic field that drives the rotor.
This design makes BLDC motors:
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Highly efficient — minimal power loss through heat and friction.
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Extremely durable — fewer mechanical parts mean longer lifespan.
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Compact yet powerful — ideal for tight enclosures like door openers.
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Precision-controlled — smooth operation through microcontroller integration.
The DC24V 120W Brushless Motor used in Digital Home Systems’ products demonstrates how far this technology has advanced — small enough for sleek design yet strong enough to operate doors weighing up to 250 kg.
How Brushless DC Motors Work in Door Automation
In an Automatic Swing Door Opener, the BLDC motor is connected to a microcontroller that monitors voltage, current, and position sensors in real time.
The microcontroller continuously adjusts torque and speed to match the door’s weight and movement, ensuring soft start, consistent swing speed, and gentle stop.
This closed-loop system makes the motion feel natural — eliminating the sudden jerks that older systems produce. It also prevents energy waste and component strain, increasing efficiency and reliability.
Key Advantages of Brushless DC Motors
1. Superior Efficiency
Because they remove brushes and mechanical commutation, BLDC motors minimize electrical resistance and power loss. The result is up to 90% energy efficiency, meaning more input energy turns into motion rather than heat.
For users, this means lower power consumption and reduced operating costs — essential for continuous-use environments like airports, malls, or hospitals.
2. Low Maintenance
Mechanical brushes wear down over time, creating friction and carbon dust. This requires frequent cleaning or replacement.
BLDC motors eliminate this entirely. With no physical contact points, they can operate for tens of thousands of cycles with virtually no maintenance, cutting servicing costs significantly.
3. Compact Power and Smooth Control
Despite their small footprint, BLDC motors deliver strong torque. A 120W unit can easily drive doors up to 250 kg while maintaining a slim design profile — allowing for clean installations in modern architecture.
The microcontroller-based control system manages every motion parameter: speed, torque, and braking. That translates to soft-start, soft-stop, and adjustable swing angles, giving the system a refined, professional feel.
4. Quiet Operation
Without brush friction and with a perfectly balanced rotor, BLDC motors are ultra-quiet, typically below 66 dB.
This is vital in public or private buildings like hospitals, hotels, offices, or residential areas where silent operation matters as much as performance.
Read more in our companion article: Ultra-Quiet & 90% Power Efficiency in Automatic Doors
Applications of Brushless DC Motors
BLDC motors are incredibly versatile. They are used in:
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Automatic Swing & Sliding Doors — for controlled access in buildings.
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Smart Home Systems — integrated with automation hubs for voice or app-based control.
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Industrial Access Systems — where durability and precision are essential.
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Healthcare Facilities — for hygienic, touch-free entryways.
In each case, they deliver quiet operation, energy efficiency, and long service life.
Sustainability and Environmental Impact
With their high efficiency, brushless DC motors directly reduce carbon emissions and electricity consumption.
By converting over 90% of electrical input into mechanical motion, they use less power to perform the same job.
Over time, this contributes to a greener, more sustainable automation ecosystem, aligning with Australia’s energy-efficiency goals.
Conclusion
The Brushless DC Motor is the foundation of modern door automation.
By combining durability, precision, and sustainability, it enables systems like the Automatic Swing Door Opener 250kg to operate efficiently and silently in any environment.
Whether you’re designing a smart home, upgrading a commercial access system, or installing automated swing doors, BLDC technology ensures performance you can trust.
👉 Explore our Door & Window Automation Systems to see how Digital Home Systems applies this technology to real-world solutions.
👉 Explore the following products with Brushless DC Motor:
See our Automatic Swing Door Opener 250kg
See our Built-in Automatic Sliding Door
Contact us today for expert installation and advice on BLDC-powered door automation.
