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Diesel / Electric Locomotive Technology

2634 Views 75 Replies 13 Participants Last post by  SeattleTrainGuy
I wish to follow the technology of the diesel / electric locomotive, as I have a 1983 Isuzu P/U with a 58hp, 4 cyl diesel engine, that I would like to have power one of my 10kw generator heads, with a 120v or 240v electric motor powering my rear axle.

My intention is to remove the 5-speed manual transmission and put one of my 10kw generator heads in its place, then idle the engine at the RPM necessary to achieve 60Hz, and direct-wire the A/C 120 or 240V drive motor to the generator head to supply power to the motor.

It doesn't make sense to me to spends thousands of dollars on batteries, along with adding the extra weight, then having to recharge the batteries, when I already have a complete power source.

If anyone knows where I should be searching, please point me in that direction? Thanks!
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So you must think that I joined this site because I already knew all of the information that I propose to seek here?
It certainly sounded you already identified a direction and had some of the answers.
Here is a little cheat sheet for you regarding the numbers:

58HP - 43.3kW
10kW - 13.4HP
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This is what I am after. Thank you.

So it appears that I would require at the least a 43-45kW motor, and I am assuming here that you're referring to a D/C motor? I don't see many people on EV forums talking about A/C powered motors because of the batteries.
I am talking straight power. If I were to guess, DC motors are less than 30% of what's being talked about. You should stick around in observer mode :)
Remember this when you're thinking about offering information; I am building a 20kW generator that will produce 240V A/C power, to supply that electricity to an electric drive motor. That's it. The generator just happens to be bolted in my pickup and it has wheels. This would be nothing different than you buying a 20kW generator to provide emergency backup power for your home. I'm just using it in a different application, and regulating the speed of the electric drive motor with a controller. That's all.
With a 20kW generator you're still short more than 2 times on power. Is your generator single phase ?
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So then your setup would look something like

1PH generator [3PH AC -> DC -> 1PH AC] -> VFD [AC-> DC -> 3PH AC] -> induction motor

Do you see any problems with that ? :)
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Have you seen a lot of single phase motors above 10HP ? I don't believe I've ever seen voltage/rpm regulation for a single phase motor.
Sounds like you've decided that you need a single phase 27HP (20kW) motor for your project, and some way to control the RPMs for it. Leaving aside the second part, you should shop around and see if you can find such motor in existence. I don't believe they exist, not even close.
You're limited to 20kW right now from your power source. You can't get 58HP (43kW) from a 20kW power source, regardless of the type of motor you hook up to it. What am I missing ?
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You can get either AC or DC motor rated for 60HP, but you won't be able to squeeze out 60HP out of either unless you have twice the power than what you got now. Regarding AC there are a lot more different kinds of motors, and I was specifically saying you won't find a SINGLE phase motor rated for that much power, all high powered AC motors are 3 phase.
A battery bank can be constructed for virtually any voltage given that power requirement. Assuming 5C maximum rate of discharge, to pull 40kW you'd need at least 83Ah at 96V or say 166Ah at 48V.
You should just read other impossible threads on this board, there is lots of knowledge here :)
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