Jump to content


Photo

Speed Loop And Current Loop In Vfd


  • Please log in to reply
1 reply to this topic

#1 ShyGuy

ShyGuy

  • Members
  • Pip
  • 1 posts

Posted 02 April 2008 - 05:51 AM

This is my first post in the forum.

What is Speed loop in Drives? Is it related to Encoder or Tacho?

What is Current loop ?



#2 marke

marke

    Posting Freak

  • Moderator
  • PipPipPipPipPipPip
  • 2,604 posts
  • Gender:Male
  • Location:Christchurch, New Zealand

Posted 03 April 2008 - 07:55 AM

Hello ShyGuy

I assume that you are referring to the internal workings of a vector drive, rather than the external connections to a standard drive.
If this is the case, then the vector control model needs to know what the motor speed is and what the motor current is. These values are used within the control algorithm as a current loop (a control system controlling the current) and a speed loop ( contol system controlling the exact motor speed or slip))


Best regards,




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users