Reasonable Range Of Stepper Motor Heating

- Mar 04, 2019-

Reasonable range of stepper motor heating



The various types of motors we usually see have iron cores and winding coils inside. The winding has resistance, and the power will generate loss. The loss is proportional to the square of the resistance and current. This is the copper loss we often say. If the current is not a standard DC or sine wave, harmonic loss will occur. The core has hysteresis. The eddy current effect, also in the alternating magnetic field, is also related to the material, current, frequency, and voltage. This is called iron loss. Both copper loss and iron loss are manifested in the form of heat, which affects the efficiency of the motor.Stepper motors generally pursue positioning accuracy and torque output, low efficiency, relatively large current, high harmonic content, and alternating current frequency with speed. The AC motor is serious.


Reasonable range of stepping motor heating


The extent to which the motor is allowed to heat up depends mainly on the internal insulation rating of the stepping motor. The internal insulation properties are destroyed at high temperatures (above 130 degrees). Therefore, as long as the internal does not exceed 130 degrees, the motor will not damage the ring, and the surface temperature will be below 90 degrees. Therefore, the stepper motor surface temperature is normal at 70-80 degrees. The simple temperature measurement method is useful for point thermometers, and can also be roughly judged: the hand can be touched for more than 1-2 seconds, not more than 60 degrees; the hand can only touch, about 70-80 degrees; a few drops of water quickly It is more than 90 degrees.


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