×
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

Power formula

Power formula

Power formula

(OP)
With multiple generators which formula would be used?

Thanks for your help

RE: Power formula

I'm not sure what you are asking for here.  Could you be more specific, please.

RE: Power formula

(OP)
I would like to tie several generators together to output to a single output wire.  Is there a formula that will let me know what the out put would be?  Is this possible? and what happens with different voltages?  What would be the disadvantages?

RE: Power formula

The total power would be the power delivered by each generator added up.
I am no expert in paralleling sources but some of the things you have to consider is synching the generators together so that all cross zero at the same point. There are relays for this but breakers on each would be required (might be anyway by NEC). Also, the voltage amplitude should be considered in your decision to tie to generators together (make sure equal before tying together)(like an AVR or something). What your purposing is doable and done all the time (think of the grid). There are many considerations that should not be overlooked or serious damage or even death could occur when you attempt to tie these together and they are not in synch (generator trailer may even roll for you).
There are many in here that I am sure will add some more considerations as well as elaborating on my concerns. Good luck.

RE: Power formula

What you are asking is possible.  In fact, virtually every utility in the world does this exact thing.

If run isolated from a utility 'grid', one (best if the largest) of your generators needs to be able to govern the frequency of the isolated system to, say, 60Hz.

This is a very complex topic, and I strongly recommend the services of a competant engineer experienced in this area before you commit any real $.

Assuming all generators are compatible (or made to be compatible via transformers), the total output would be the sum of the rated outputs of the individual units at the actual frequency and voltage (less any losses).

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