×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

BRUSHLESS DC MOTORS

BRUSHLESS DC MOTORS

BRUSHLESS DC MOTORS

(OP)
I would like to know from anyone that has hands on experience with the brushless DC drives.If you have used these motors,How reliable are they?
What type of system was it used on?Pump,Blower,Conveyor?
Did you use anything with HP rates of 200 to 400 HP ?


Thank you all for help.

GusD

RE: BRUSHLESS DC MOTORS

We have used one burshless DC system that was 400HP.  We have many installed that are 30HP and less.  To my knowledge we had not trouble with the motor (400HP) in the 6+ years of operation.  Upon startup there were some drive problems, but that was mainly related power electronic problems in the drive and not any sort of control problem.    

RE: BRUSHLESS DC MOTORS

300 hp
using it for a pump appl
no problems
brushless DC is the way to go

RE: BRUSHLESS DC MOTORS

Now when your talking Brushless DC Drives, are you refering to like drives for Brushless servo motors, stepper motors, or ac sync motors?...they are all brushless dc.

Cameron Anderson - Sales & Applications Engineer
Aerotech, Inc. - www.aerotech.com

"Dedicated to the Science of Motion"

RE: BRUSHLESS DC MOTORS

(OP)
Hi servocam

Sync motors may or may not have brushes.You are right  about the others.As for the Brushless DC I was refering to is a motor where the rotating element has magnets and the Stator (in this case a field) has the windings.These motors are powered from Inverters not much different that any VFD applic.Th Inverter action provides the DC needed to power motor.As I understand from the literature,they have speed/torque curve characteristics superior to FluxVector Drives.I tried a website for one manufacturer and I was intrigued by the technology.We have most of the other motor types made but none like these.
Thank you Servocam (try POWERTEC website)

GusD

RE: BRUSHLESS DC MOTORS

Thanx. Fam. w/ Powertec. Just not that fam. with that type of motor technology your refering too.

Cameron Anderson - Sales & Applications Engineer
Aerotech, Inc. - www.aerotech.com

"Dedicated to the Science of Motion"

RE: BRUSHLESS DC MOTORS

GusD,

The application where we used the 400HP was also Powertec.  Have had mixed success with the smaller drives, but little problem with the motors.  For variable speed, high torque applications they are nice.  The efficiency is good also due to the PM rotor providing the required magnetization.  

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources