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The Advantages of BLDC vs AC type Motors

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A Direct Current (DC) motor is a motor that converts direct current electrical energy into mechanical energy. Specifically, the DC motor being used in our Explorer series is a Brushless Direct Current Motor or BLDC, which is the latest generation of DC motor available today. The BLDC is a relative new type of motor but is already widely used in industries where high torque motors, intelligent speed control and lower maintenance are required. These industries include automotive production, robotics and factory conveyor systems. As of today, Waterline proudly offers this technology in our line of industrial ceiling fans for industrial ventilation and cooling applications. The BLDC motor is powered via an inverter or switching power supply which provides power to a closed loop controller. The use of this controller provides pulses of current to the motor windings that allows for the control of speed and torque of the motor. Compared to traditional AC induction motors and older generation DC motors, the BLDC offers higher efficiency, less maintenance, better stability and a longer life span. With its revolutionary advantages, the BLDC motor is set to replace traditional AC induction motors and older generation DC motors in the years to come.
AC Motor Construction Stator Rotor Windings
Brushless Motor Construction Permanent Magnet Control Circuit
BLDC Motor Driven Fan
Versus
AC Motor Driven Fan
DC Motor Fan DC Motor Motor Driver
AC Motor Fan AC Motor Gear Reducer

BLDC Motor Driven Fan

Criteria
BLDC Motor Driven Fan
AC Motor Driven Fan
Weight
More than 1/3 lighter when compared to an AC Fan. Our 7.3m BLDC Fan weight 80kgs.
Heavier than a BLDC Fan. Our AC Fan weighs about 130kgs.
Operation Noise
Near silent – almost impossible to hear any noise and vibration.
Noise is noticeable as it requires a 2-stage helical gearbox like in all AC motor fans.
Energy Efficiency
Consumes up to 30% less energy than AC alternative.
Higher energy consumption.
Maintenance
The BLDC fan requires no maintenance.
Stage gear reducer requires routine inspection and oil lubrication.
Aesthetics
A sleeker, more compact silhouette compared to the bulky AC motor structure.
Exposed motor may not fit into certain commercial environments.
Price
More substantial than the AC fan.
Competitively Priced.
Specification
FAN MODEL
BDC - 7.3
BDC - 3.1
Total Weight
80 kg
30 kg
Speed Reduction
Gearless Direct
Gearless Direct
Motor kW
1.1 kW
0.3 kW
Noise Level
Almost Silent
Almost Silent
Maintenance
None
None
FAN MODEL
BAC - 7.3
BAC - 3.1
Total Weight
135 kg
38 kg
Speed Reduction
Gearbox
Gearbox
Motor kW
1.5 kW
0.38 kW
Noise Level
Gearbox Noise
Gearbox Noise
Maintenance
Oil Change
Oil Change
DC Motor Fan DC Motor Motor Driver

BLDC Motor Driven Fan

Features
BLDC Motor Driven Fan
Weight
More than 1/3 lighter when compared to an AC Fan. Our 7.3m BLDC Fan weight 80kgs.
Operation Noise
Near silent – almost impossible to hear any noise and vibration.
Energy Efficiency
Consumes up to 30% less energy than AC alternative.
Maintenance
The BLDC fan requires no maintenance.
Aesthetics
A sleeker, more compact silhouette compared to the bulky AC motor structure.
Price
More substantial than the AC fan.
Specification
FAN MODEL
BDC - 7.3
BDC - 3.1
Total Weight
80 kg
30 kg
Speed Reduction
Gearless Direct
Gearless Direct
Motor kW
1.1 kW
0.3 kW
Noise Level
Almost Silent
Almost Silent
Maintenance
None
None
AC Motor Fan AC Motor Gear Reducer

BLDC Motor Driven Fan

Features
AC Motor Driven Fan
Weight
Heavier than a BLDC Fan. Our AC Fan weighs about 130kgs.
Operation Noise
Noise is noticeable as it requires a 2-stage helical gearbox like in all AC motor fans.
Energy Efficiency
Higher energy consumption.
Maintenance
Stage gear reducer requires routine inspection and oil lubrication.
Aesthetics
Exposed motor may not fit into certain commercial environments.
Price
Competitively Priced.
Specification
FAN MODEL
BAC - 7.3
BAC - 3.1
Total Weight
135 kg
38 kg
Speed Reduction
Gearbox
Gearbox
Motor kW
1.5 kW
0.38 kW
Noise Level
Gearbox Noise
Gearbox Noise
Maintenance
Oil Change
Oil Change
Want to see the Waterline Big Fan BLDC Type Fan in person? Feel Free to contact a technical salesperson to schedule an on-premise visit to see a demo fan in operation now!

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Feel free to drop us any questions you have, or schedule a visit to see the Big Fan in person!
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