English 繁體中文
 


 

Brushless DC Motors
BLDC Air Conditioner Motors
BLDC Scooter Driving Motors
BLDC Pump Motors
BLDC Trace Mill Motors
BLDC Sliding Door Motors
Other BLDC Motors
AC Motors
Air Conditioner AC Motors
Chiller AC Motors
Download E-Categories

 

 

 

How's difference between BLDC motors and PSC motors?
 
The Rotor
BLDC motors   PSC motors
Stator current produces magnetic field that acts on rotor:   Stator current produces magnetic field that acts on rotor:

* Permanent magnets on rotor oppose stator field
* No current flows in rotor
* Rotor losses are very low

 

* Rotor “slips” in stator-produced field, inducing currents in rotor
* Rotor currents create magnetic field to oppose stator field
* Current in rotor causes I2R losses and heat

 
Permanent magnet type   Squirrel-cage type
 
Comparison table between BLDC motors and PSC motors
Topic

BLDC Motors

PSC Motors

Brush DC Motors

Compact Size, Light Weight

X

Low Rotor Inertia,
High Speed Rotation

X

No Rotor Copper Lose

X

High Efficiency

Heat Dissipation

X

No Carbon & Electric Flash

X

Low Speed Torque

X

No Brush maintenance

X

Over Load Capability

X

◎:Excellent      △:Acceptable      X:Poor

 
BLDC Motor & Driver   PSC Motor & Control
  • Controlled by low voltage inputs
  • Permanently connected to AC line
  • Motor starts softly, ramps to speed
  • Wide airflow range between hi and low taps
 
  • Controlled by AC line
  • Start-up by contact to AC line
  • Abrupt turn-on stress, noise
  • Motor speed taps are inefficient and produce only minor speed adjustment
 
Block Diagram-BLDC Motor & Driver   Block Diagram - PSC Motor & Control
 
HEADLINE Motor Application In 800CFM Fan Coil Unit
BLDC Motor & AC Induction Motor (3-Speed)
 
E-mail page  Print page Bookmark This Page
 
More information about BLDC Motors...
 
   

About Us   |   Newsroom   |   Products   |   Service   |   Inquiry   |   Contact Us    |   Home
Copyright © 2009 Headline Electric Co.,LTD.