Brushless DC Motors(BLDC)

What is BLDC Motors?

The highest efficiency motors there is! … A BLDC Motors

◆Without mechanical Brushes and Commutator.

◆Permanent Magnet Rotor.

◆Rotor losses are nearly zero.


The “Electronic Inverter”

◆“Commutates” the stator magnetic fields.

◆Synchronous machine.

◆Speed and torque controlled.

◆Interfaces to the HVAC controls.


Take headline BLDC Motors drive system For Variable Air Volume(VAV)
The BLDC Motors in Air conditioning

◆High Efficiency.

◆Constant Airflow.

◆Sound.

◆Tailoring to the Customer.

Headline Electric Co., Ltd.

How's difference between BLDC motors and PSC motors?

Headline Electric Co., Ltd.
Headline Electric Co., Ltd.

Permanent magnet type

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Squirrel-cage type

Comparison table between BLDC motors and PSC motors

Headline Electric Co., Ltd.
Headline Electric Co., Ltd.
Headline Electric Co., Ltd.

Block Diagram-BLDC Motor & Driver

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Block Diagram - PSC Motor & Control

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Operation and application

1. Wall mounted type :

Headline Electric Co., Ltd.
Headline Electric Co., Ltd.

Spec Range:

Vbus:DC 35V、300~350V.
Speed:300~1300RPM(V-com:1.8~6.5V).
Rated output:10~40W.
F.G signal output.
Driver built in motor.

Headline Electric Co., Ltd.

2. Fan Coil type (In-The-Ceiling type):

Spec Range:

AC Line:AC110 or 220V
Freq:50 / 60Hz
Speed range:600~1150RPM.
Normal fan speed mode:Adjustment for High、Med、Low.
Auto fan speed mode:PI auto control Adjusting fan speed.
Rated output:60、120W.

Headline Electric Co., Ltd.
Headline Electric Co., Ltd.
Headline Electric Co., Ltd.

3. Outdoor Fan Motor

Headline Electric Co., Ltd.
Headline Electric Co., Ltd.

Spec Range:
Vbus:DC 280~350V.
Speed:500~1200RPM(V-com:1.8~6.5V).
Rated output:40~110W.
F.G signal output.
Driver built in motor.

Headline Electric Co., Ltd.

4. Outdoor Fan Motor

Headline Electric Co., Ltd.
Headline Electric Co., Ltd.

Spec Range:
Driver Power in:AC 100~240V/50/60Hz
Speed:400~1400RPM
Rated output:100~740W↓
F.G signal output
Speed com:V-com Mode/PWM Mode

Headline Electric Co., Ltd.

Typical BLDC Motor Control Hardware

Headline Electric Co., Ltd.
Headline Electric Co., Ltd.