Design & Build Instructions for a Turbine & 3 Phase Alternator

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Discussion Overview

The discussion revolves around the design and construction of a turbine and a 3-phase alternator, focusing on specifications for a low-cost solution capable of producing 20kW at high RPMs. Participants explore various aspects of the design, including the type of alternator, the application, and the feasibility of using existing hardware versus building from scratch.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants seek clarification on the specifics of the alternator design needed for a 20kW output at 10,000 to 15,000 RPMs.
  • There is a question about the type of turbine that would drive the alternator and the application it is intended for.
  • One participant suggests that existing 3-phase industrial motors could be adapted as generators, which may be a cost-effective solution.
  • Another participant expresses a preference for building the alternator from scratch to understand the details better, questioning whether this approach would be more economical.
  • There is a discussion about whether a 1-phase or 3-phase system would be more suitable for powering electrical devices.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the best approach to designing the alternator or the turbine. Multiple competing views exist regarding the use of existing hardware versus building from scratch, and the suitability of 1-phase versus 3-phase systems remains unresolved.

Contextual Notes

Participants have not provided specific details about the application or the type of turbine, leading to uncertainty in the discussion. There are also unresolved questions about the horsepower required from the turbine to operate the alternator effectively.

Who May Find This Useful

Individuals interested in DIY renewable energy projects, electrical engineering, or those looking to understand the design and functionality of alternators and turbines may find this discussion relevant.

Qaiphyx
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3 phase alternator.

any good links to*** is what I meant in the title
 
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That's a pretty vague question. Could you be more precise?
 
Hmm, Not to sure on how to be precise about this? What more information would you guys like? let's go with low cost that puts out 20kW runnin at around 10000 - 15000 rpms or would there be a better type of alternator for this high of rpms?
 
Last edited:
Turbine being driven by what? What application?
 
brewnog said:
Turbine being driven by what? What application?


EDIT: whoops read that wrong... lol

Does it matter for the alternator?
 
Last edited:
Qaiphyx said:
EDIT: whoops read that wrong... lol

Does it matter for the alternator?

I just need an alternator design, which I assume 3 phase would work best, and rough estimated size for 20kW output. Isnt it just 3 magnets rotating along three other things producing a sine current?

I just don't know the specifics of it, like what the magnets rotate along and how to wire it all up. Or how to find out how much horsepower I would need from the turbine to turn it.
 
Is this device something you must create from scratch or can you adapt existing hardware?
If you are willing to use existing hardware, used 3ph industrial motors are cheap. You can load them and use them as generators.
 
montoyas7940 said:
Is this device something you must create from scratch or can you adapt existing hardware?
If you are willing to use existing hardware, used 3ph industrial motors are cheap. You can load them and use them as generators.

I can use existing hardware, I would prefer to build from scratch though as I like to know the in an outs of everything. Plus would it not be more inexpensive to build it myself?
 
Qaiphyx said:
would it not be more inexpensive to build it myself?
I wouldn't think so.
 
  • #10
The application would be to power whatever runs on electricity. Would 1 phase be best for this or 3 phase??
 

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