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


Wind Turbines - Hydraulic pump - Generator

Wind Turbines - Hydraulic pump - Generator

Wind Turbines - Hydraulic pump - Generator

Hello there,

I have an application where we are considering installing several vertical wind turbines at one close location. My manager has asked me if it is viable connecting these turbines   VIA AN HYDRAULIC SYSTEM to a single generator. I consider a direct drive generator on each turbine as a more viable and efficient option.

What are your opinions on this?

RE: Wind Turbines - Hydraulic pump - Generator

Yes, move the electrical output not the oil.  Lots of losses and starting problems and higher losses as temperature drops.


RE: Wind Turbines - Hydraulic pump - Generator

Thank you for confirming my thoughts Tritoon!

RE: Wind Turbines - Hydraulic pump - Generator

Moving the electrical energy may not be the most efficient lowest cost method. If the turbines run at different speeds and are not too large hydraulic may provide a lower cost more efficient system. Insulating the hoses, pumps and motors is not real expensive. Having multiple hydraulic motors driving a larger generator a constant speed could easily be as efficient as multiple electrical systems if the rpm difference between turbines is greater than 5%.
A direct drive generator will require power conditioning controls that are very efficient and output the finished voltage for grid use on each turbine. This hardware and software can be quite expensive if you want greater than 80% average efficiency over a wide speed range.

Ed Danzer

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


White Paper - A Guide to 3D Printing Materials
When it comes to using an FDM 3D printer effectively and efficiently, choosing the right material at the right time is essential. This 3D Printing Materials Guide will help give you and your team a basic understanding of some FDM 3D printing polymers and composites, their strengths and weaknesses, and when to use them. 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