The motor of the core and winding coil is what we commonly see in our daily life, and what is the heating principle of this Mitsubishi servo motor by comparing it with other motors? We know that the winding has resistance, and the loss will occur when energized, and the loss is proportional to the current square of the resistance, which is the copper loss effect. Both the copper and iron losses of Mitsubishi inverters will be manifested in the form of heat, which will affect the efficiency of the motor.
The stepper motor generally seeks positioning accuracy and torque output, the efficiency is relatively low, the current is generally relatively large, and the harmonic component is high, and the frequency of current alternation also changes with the speed, so the stepper motor generally has a heating condition, and the condition is more severe than that of the general communication motor. If the current is not a standard direct current, or if it is not a sine wave, harmonic losses will occur; There is also a kind of iron loss, which is that the iron core has a hysteresis eddy current effect, and the loss will also occur in the alternating magnetic field, and its size is related to the data, current, frequency, and voltage.
Mitsubishi servo motor agent said that motor heating will also cause loss of parts, although motor heating generally does not affect the life of the motor, most customers do not need to pay attention. However, when it is severe, it can have some negative effects. For example, there are some occasions where excessive heating of the motor is not allowed, such as medical equipment and high-precision testing equipment. Therefore, the heating of the motor should be controlled as necessary. For example, the change of structural stress and the small change of internal air gap caused by the different thermal expansion coefficients of each part of the motor will affect the dynamic response of the motor, and it will be easy to lose step at high speed.
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