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  #1  
Old 03-13-2009, 08:08 PM
Efiero Efiero is offline
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Default Generator to electric motor

Hi just wondering if some one could take a generator head like sold on ebay and turn it into a motor and what it would take i ask because you can buy them alot cheaper than a motor

Last edited by Efiero; 03-14-2009 at 07:48 PM.
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  #2  
Old 03-14-2009, 07:52 PM
Efiero Efiero is offline
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Default Re: Generator to electric motor

come on some one must know if one of these can work probly not but it not going to hurt to ask
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  #3  
Old 03-14-2009, 11:43 PM
gottdi
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Default Re: Generator to electric motor

Generators are motors. Motors are generators. : )
Generators specifically are quite heavy. They may work just fine but you need a controller. That is the problem.
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Old 03-15-2009, 12:30 AM
Efiero Efiero is offline
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Default Re: Generator to electric motor

Ok if it is a motor than you can buy this giant motor for 650 bucks its about 400 lbs and 15.5 inch diam

Last edited by Efiero; 03-15-2009 at 05:26 AM.
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Old 03-15-2009, 07:00 AM
Efiero Efiero is offline
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Default Re: Generator to electric motor

Oh one more ? is there a way to figure how many RPM this would turn with 120 volts from the generator specs would this be a DC or an AC motor DC i think right
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Old 03-15-2009, 07:36 AM
gottdi
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Default Re: Generator to electric motor

Generators are typically AC. They put out AC so you can plug in and use the power rather directly. Yes there are some generators that produce DC but not many. I have two. Your photo is most likely an AC Generator Head. I don't think you can rate the input voltage by the output voltage. If it can put out 240 then it should take 240 no problem. Remember that the generator is being driven by an ICE engine. Most likely at a nominal rpm too.
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Old 03-15-2009, 07:38 AM
gottdi
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Default Re: Generator to electric motor

Too heavy for most EV conversions. Unless you are going to do a big truck or something like that. I'd say it is mostly for industrial use and best left in that application. If you want AC drive then get an AC designed for traction and not Generation.

Pete : )
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Old 03-15-2009, 07:40 AM
Efiero Efiero is offline
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Default Re: Generator to electric motor

Ok lf it is an AC is there a way to figure out how many rpms it will turn with a given voltage and are ac controlers much more $ than the DC
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Old 03-15-2009, 07:52 AM
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Default Re: Generator to electric motor

Here is an eBay link to those AC generator heads with specifications in the ad.

http://cgi.ebay.com/eBayISAPI.dll?Vi...m=230330039815

I'm not impressed with some of the features:

-Very Heavy
-Brushed AC and only spins up at 1800 RPM
-Class B insulation where most EV motors are Class H and can withstand more heat
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Old 03-15-2009, 07:53 AM
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Default Re: Generator to electric motor

Quote:
Originally Posted by Efiero View Post
Ok lf it is an AC is there a way to figure out how many rpms it will turn with a given voltage
Usually, for 60 Hz AC, 1800 or 3600 RPM, depending if it 4 pole or 2 pole. And that would be for 115/230 VAC. Larger generators would probably have taps for both.

Quote:
and are ac controlers much more $ than the DC
Typically, yes.

Your idea here may be technically possible, but not practically feasible.

Regards,

major
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