Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Motor voltage higher than battery voltage

  1. Aug 2, 2012 #1
    what happens if you connect a 36v electric motor to a 24v battery? Is that going to ruin the battery/motor?
     
  2. jcsd
  3. Aug 2, 2012 #2
    It'll probably just run slow
     
  4. Aug 2, 2012 #3

    jambaugh

    User Avatar
    Science Advisor
    Gold Member

    A typical PM DC motor will run slower and at lower torque at lower voltage and may not turn at all. If it stalls it may drain the battery and damage it. However your example of 24V battery on 36V motor should run fine. Typically the voltage rating of the motor is the max for continuous use. DC motors are often used as variable speed motors where you lower the voltage to reduce speed. (AC motors don't work that way though.)

    Of course the reverse case can be a concern for your battery and motor, i.e. running a motor at higher than rated voltage will draw a lot of current, possibly damaging the battery and over heat the motor burning it out if run continuously.
     
  5. Aug 2, 2012 #4
    ok so basically I should be fine as long as I only throttle up to 24 volts?
    do throttles usually increase/decrease the voltage or current?
     
  6. Aug 2, 2012 #5

    psparky

    User Avatar
    Gold Member

    To Jaredmt....

    Just for fun, what do you think would happen if you hooked up that battery up to a 36 volt AC motor?
     
    Last edited: Aug 2, 2012
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Motor voltage higher than battery voltage
  1. New to higher voltage (Replies: 1)

Loading...