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Attaching an alternator to a tractor to power an inverter


 
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Greenfrog
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PostPosted: Thu Jan 31, 2019 5:17 pm    Post subject: Attaching an alternator to a tractor to power an inverter Reply to specific post Reply with quote

I have pto pulley on my CC108 and 129. I want to attach an automotive alternator via a belt to generate AC volts to run an inverter....
Question: what type, size, etc. might work best?

How to mount?attach? ... I would rig up something
Any suggestions?
Wiring.?
Will it work?
 
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jeffcat
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PostPosted: Thu Jan 31, 2019 5:54 pm    Post subject: Re: Attaching an alternator to a tractor to power an inverte Reply to specific post Reply with quote

Lots of how to videos on Utube. You need a very small altinator like Hitachi makes, a darn fast engine or engine pulley to altinator ratio speed, a very large storage battery, and a honking big inverter. Will never work like a portable generator from Lowes. Made a super duper portable battery charger many years ago with a ten horse motor if memory serves and no inverter just straight big storage battery. It really worked but not very practical. Just take a garden tractor and jumper cables.
 
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Bob
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PostPosted: Thu Jan 31, 2019 6:15 pm    Post subject: Re: Attaching an alternator to a tractor to power an inverte Reply to specific post Reply with quote

"I want to attach an automotive alternator via a belt to generate AC volts to run an inverter...."

Your post is a bit confusing, by definition, inverters convert DC current to AC current, so you don't want AC Volts to run an inverter, IMHO.

I'm gonna GUESS you want a 120 Volt AC power source?

If that's what you want, I think CC dealers sold PTO driven AC generators, for sure DEERE did.

Here's a link to a thread posted by someone who fabricated one.
CC generator

 
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greentoad
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PostPosted: Fri Feb 01, 2019 6:24 am    Post subject: Re: Attaching an alternator to a tractor to power an inverte Reply to specific post Reply with quote

I'm gonna build one of these suckers. Already have an inverter that is 2000W/4000PEAK.
Do I have to put a battery in-between the alternator and the inverter is the VR on the alternator good enough to regulate input voltage?
 
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Texasmark1
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PostPosted: Fri Feb 01, 2019 7:02 am    Post subject: Re: Attaching an alternator to a tractor to power an inverte Reply to specific post Reply with quote

Watts in (VxA, PF=1 if talking about AC circuits) equals watts out minus losses....746 watts per 1 HP. Keep in mind that to work for you, if you are using an RPM rated unit, you may be running a 400 cu inch engine at redline RPMS to get the RPM ratio to run your 400 watt generator/alternator at 400 watts. Neighbor's boy had one years ago, don't remember anything about the unit but I installed it in his truck, of similar sized engine, at his request, and what I said above is what happened. Efficiency??????? Totally sucked! Turned me off them right away.

Course technology and all today, surely things are better now.
 
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Married2Allis
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PostPosted: Fri Feb 01, 2019 7:19 am    Post subject: Re: Attaching an alternator to a tractor to power an inverte Reply to specific post Reply with quote

Belt-driven Pincor generators were once available to install on Cub Cadets using the front end PTO mount. A QA42 snowblower mount may be a good start to building a platform for a belt-driven generator like this one available from NT. Your IH 129 would handle 5000 watts - requires 11hp and 3600 rpm. It's safe for electronics, has +/- 5% THD rating. Probably more practical than rigging up a large inverter.

 
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jeffcat
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PostPosted: Sun Feb 03, 2019 7:58 pm    Post subject: Re: Attaching an alternator to a tractor to power an inverte Reply to specific post Reply with quote

You absolutely need a battery to act as a buffer. The whole system will be totally unstable and most likely one or both will fry very quickly. Maximum smoke.
 
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Texasmark1
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PostPosted: Wed Feb 27, 2019 4:53 pm    Post subject: Re: Attaching an alternator to a tractor to power an inverte Reply to specific post Reply with quote

6.7 hp to get your 5kw, plus 10-20% loss for efficiency has you up at 8 hp. 11 hp requirement would leave you 3 hp for transient loads, make for a very
good power source to drive through things like compressor starts pulling on the generator. If you can stand the price, sounds like a winner. I bought
quite a few things from NT and their ratings worked just fine for me.
 
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DoubleO7
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PostPosted: Sat Mar 16, 2019 6:52 am    Post subject: Re: Attaching an alternator to a tractor to power an inverte Reply to specific post Reply with quote

CVPost-Greenfrog wrote:
(quoted from post at 22:17:34 01/31/19) I have pto pulley on my CC108 and 129. I want to attach an automotive alternator via a belt to generate AC volts to run an inverter....
Question: what type, size, etc. might work best?

How to mount?attach? ... I would rig up something
Any suggestions?
Wiring.?
Will it work?

You can get 120 AC volts the hard and complicated way or the easy, clean and simple way.
Get a Fabco Powermite 110, it even looks exactly the same as a Cub Cadet starter/generator.
Paint it the CC yellow and everyone would think it was a factory option.
 
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