RAMPS on 24V

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Intro

Do Stepper Motors Work Better at Higher Voltage?

  • Steppers have less torque at higher speed
  • Power of a stepper is constant - if power is torque x velocity, then torque decreases with higher velocity
  • The mechanism for loss of torque is back EMF from inductance and back EMF from rotation
  • With high velocity, back EMF of inductance is significant as a fraction of motor power. At high enough speed, inductance overtakes and motor stalls. This is the region when higher voltage allows stepper motor to overcome the effect of inductance. So at Max speed - higher voltage produces more torque for a stepper motor.

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