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How to power 8 of these?
Last Post 20 Sep 2012 02:11 PM by Nathaniel. 3 Replies.
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isebastion
New Member
New Member
Posts:2

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17 Sep 2012 08:07 PM
    My project needs a generator that creates 2,000 watts peak and 150 amps peak in order to run 8 electric motors.

    We are going to be powering 8 small electric motors. Here are the requirements for each motor:

    80 Volts Peak Each
    1.37 HP Peak Each
    1025 Watts Each
    16,305 RPM
    17.7 Amps Each.

    Here is the link to the PDF of each electric motor: http://thingap.com/pdf/2011/TG2320-ss-2011.pdf

    I need a power source that can power all of these. We are looking for a generator type set up that can kick in once that batteries reach 80% discharge.

    Sorry for the terrible first explanation.

    Hopefully you can lend some advice now?
    5 minutes ago

    The on board generator would kick in to completely run all the motors at once when the batteries reach 80% discharge.
    Nathaniel
    Basic Member
    Basic Member
    Posts:193

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    18 Sep 2012 02:50 PM
    Your generator specifications do not add up. 150 amps at 80 volts is 12,000 watts not 2,000 watts.

    Will need at least a 12,000 watt generator.

    80% discharge on your batteries is quite deep. Are they specifically deep discharge batteries? If not they will not last long.

    Are you going to drive through the batteries and recharge them or are you going to charge them with a separate circuit? If you are going to drive through the batteries you are going to need more then 80 volts and more power out of the generator than the 12 KW. The exact values will depend on the type of batteries you use (e.g. lead acid, NiCad, NMH, LiPO).

    Niel Leon
    engineering.com
    isebastion
    New Member
    New Member
    Posts:2

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    19 Sep 2012 08:51 PM
    Yeah. You are right. It is 12,000 watts. I made a typo. They are lithium polymer batteries specifically designed to be sucked dry quickly.

    Since I have posted this questions, we have changed motors to one that provides the same torque and hp, but require 1/3 less watts and amps to run. This has brought it down to an 8,000 Watt system which is getting closer to manageable.

    Thanks for the heads up. I appreciate it.

    Nathaniel
    Basic Member
    Basic Member
    Posts:193

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    20 Sep 2012 02:11 PM
    Yes, LiPO batteries are design for high currents, but their life is still significantly if you regularly draw them down to deeply.

    Niiel
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