Contact US

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!

*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

Diesel Gen AVR

Diesel Gen AVR

Diesel Gen AVR


Why there is no setting available in Diesel generator(any oem) (in my case size is 2000kva 415) AVR (any OEM) related to Capability curve of alternator ,

RE: Diesel Gen AVR

That is not in the job description of an AVR.

"Why not the best?"
Jimmy Carter

RE: Diesel Gen AVR

Sorry waross, but I beg to differ.

A basic AVR will control the voltage in single running mode and can control the voltage droop when in parallel mode.
In parallel mode there are two (of many) modes you do not want to enter:

Over excitation – excess field current can overheat the rotor.

Under excitation – low field current can result in the generator rotor not producing sufficient magnetism to hold the rotor in synchronism and it could ‘pole slip’.

There are AVRs with these features available – at a price. It does add to system complexity and these features are often not used in simpler applications.

This is a simple answer to what can become a complex area.

I suggest that the OP googles some of the terms in this response, and searches AVR manufacturer's websites (BASLER, Comap, Deep Sea etc)

RE: Diesel Gen AVR


Note that ComAp, Deep Sea and so on don't manufacture AVRs, they manufacture controllers that interface with AVRs. Basler does make AVRs, although they are rarely fitted to sets of the size in question.
Strictly speaking the AVR's purpose is to manage field strength of the rotor to control voltage, which I would expect is what waross is implying. Smaller size AVRs do have overexcitation built in if I recall correctly, but its not user modifiable.

Basler's documentation on AVR operation is excellent, and probably worthwhile reading.
For this size of plant, other manufacturers are generally tied to the OEM for the specific alternator such as Cummins (Stamford), Mecc Alte, Leroy Somer and so on. Bigger generators will obviously have a lot more capability.

EDMS Australia

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! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close