6 replies to this topic

[ktm911]

Hello to this forum..as proud owner of an 04' QuadRam and a few other classic dodge vehicles over the years I am sure I've landed in the right place and that this forum will be most helpful and applicable to my ongoing needs!!.

I currently have a non automotive project needing 36volt power and am interested if utilizing some new breed of alternator/mopar part is an option. Based on insight posted here: http://www.allpar.co...lternators.html it sounds that there may be alternators/certain model cars out there that could be the answer to my design problem?

Project in a nutshell goes as such: I want to replace a six 6v deep cycle battery array (36v system..actually about 40v based on cell voltages produced from 6v batteries) in an automatic ride on floor scrubber (NSS Champ z29) with a generator set such that I have a constant duty machine. Instead of having a 90min-2hr run time on 650lbs of expensive batteries that tend to last only a couple/few years I would have an approx 120lb system running off a propane powered 17.5hp (less?) Kawasaki engine (approx. 3200 rpm or ? based on pulleys) which I already am familiar with and use on other floor machinery. Gen set would be very similar to a commercially produced telecommunications backup generator as found here: http://www.alpha.com...haGen-DCX-3000/ which can supposedly handle a constant 36v at 70amps. Would by one of those used but hey I already have a good motor and want to run off propane anyway for indoor environments. My needs are expected to be approx 70-80amps constant as I have calculated how many amps I charge back in the machine and the machine itself has a main breaker of 90amps. I plan to leave my machines side panel off and install an expanded metal floor for the gen set to sit on. Extra cooling for the gen set would be provided through the area by a harvested portable leaf blower.
So anyways, I need an alternator that is wound or rectified to put me out the 40 volts and prefurably do it based around a 12volt starting system... If anyone has good info on how to go about this or insight on limitations I have to consider I would be most appreciative.. THANX!

[ktm911]

So far it looks like moving up in voltage did not happen based on this info: http://en.m.wikipedi...ectrical_system

[AC TC]

There are generators for heavy equipment like forest machines, fire trucks etc that allows both welding
and a 110/ 220 v output and double acting as mains alternator for the machine.

[ImperialCrown]

If it would do trickle charge duty and not be subject to high loads, a solid state DC-DC converter could do the job.
12 volts in and ~44 volts out would keep 3-12 volt batteries in series charged and ready for work. 36 volts would be too low for 3-12.6 volt car batteries.
Something along the lines of PST-DC1248?:  http://www.powerstream.com/dcdc.htm

Edited by ImperialCrown, February 2, 2012 at 05:53 pm.

[ktm911]

Nope, need about 40volt dc at 70-80amp in order to be able to replace the array.. I don't want the big batteries in the machine at all. But thanx for looking.

Edited by ktm911, February 4, 2012 at 11:38 pm.

[AC TC]

II would drop the electric idea and design a hydraulic drive instead..
A gasengine electric welding machine is another option.

[Bob_Sheaves]

36vdc here:

http://www.americanpowerinc.com/Brute 270 Alternator.htm

Specialty Leece Neville alternators.

The board doesn't like that link-type it in manually with spaces between "Brute" and "270" and "Alternator" as shown.