High Speed generator for automotive applications
High Speed generator for automotive applications
(OP)
Hey guys,
I am looking for a high speed generator for making a turbo-generator for LDT. What kind of generators should I use for 2-5 kw at 30,000 R.P.M.? Is there any place where I can get such generators.
Thanks
I am looking for a high speed generator for making a turbo-generator for LDT. What kind of generators should I use for 2-5 kw at 30,000 R.P.M.? Is there any place where I can get such generators.
Thanks





RE: High Speed generator for automotive applications
Alternatively you could develop one, I have contacts in the Australian electric motor world if that helps.
Why not just gear down to a conventional alternator?
or these guys http://www.bowmanpower.com/technology/high-speed-a...
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: High Speed generator for automotive applications
I am running a little tight on budget here. Even if I use a alternator would that not create a resistance to the turbine movement. Is there any way that I could use a permanent magnet motor as a generator. If yes, where can get one?
RE: High Speed generator for automotive applications
Capstone Microturbines contain alternators driven at 25k..75k rpm.
http://www.microturbine.com/prodsol/products/
I have no idea if they sell parts, but some of their illustrations and other sales material may be helpful for rolling your own.
I agree with Greg; a regular car alternator, geared down 3:1 or 4:1, would probably do, especially on a limited budget.
Let me amend that; you will go crazy or broke trying to get gears to survive at 30k rpm; you might do better with Poly-V belts, or even flat belts.
Mike Halloran
Pembroke Pines, FL, USA
RE: High Speed generator for automotive applications
RE: High Speed generator for automotive applications
A conventional alternator will generate plenty of resistance to motion if you adjust it that way.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: High Speed generator for automotive applications
FYI, a permanent magnet generator won't provide any load to the turbine either unless it has a load connected to the motor leads. Similar to how a car alternator will only load the shaft if it has a load connected to it's output.
You'd be designing your own generator or consulting with a manufacturer for a custom design if this was a commercial venture and not a hobbyist attempt.
RE: High Speed generator for automotive applications
PMG is the way to go at 30krpm. Capstone makes PMG's which may work for you. You might also want to contact Brij Bhargava at Ashman Technologies, Santa Barbara. He specializes in high-speed motors. He built a perm magnet motor for an 8kW project of mine several yrs ago.
Darrell Hambley
SENTEK Engineering LLC
Darrell Hambley P.E.
SENTEK Engineering, LLC
RE: High Speed generator for automotive applications
The field is stationary, and so is the stator.
Fingers are rotated between the field and stator - I guess that has the same effect as having a rotating field assembly?
They sweep or pulse the magnetic field across the stator?
Anyway - no brushes. No electric coils spinning at 10000 or 16000 RPM.
Does someone build such a thing for 30,000 rpm? No idea. But that would prob be easier than trying to make a car-style unit live at that RPM.
Jay Maechtlen
http://www.laserpubs.com/techcomm
RE: High Speed generator for automotive applications
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: High Speed generator for automotive applications
A Google search was productive.
One mfgr here:
http://www.ceniehoff.com/
Mike Halloran
Pembroke Pines, FL, USA
RE: High Speed generator for automotive applications
I was wrong and pleased to hear it.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?