chanelink logo
CHANELINK
English

What is the out of step phenomenon of synchronous motors

Categories:
Motor
Tags:
29
1
See translation
04-22

The out of step phenomenon of synchronous motors refers to the phenomenon that during synchronous operation, due to certain interference, the motor speed cannot be stable at the rated speed, and fluctuates within a certain range around the rated speed.

synchronous motor

This kind of fluctuation is called stepping out.
The main reasons for synchronous motor stepping out are electrical factors, such as voltage fluctuations in the power supply and changes in resistance in the motor winding.

 

Mechanical issues may also lead to loss of step, such as bending of the rotor shaft, wear of bearings, etc.
Stepping out has a significant impact on the operation of synchronous motors. Step loss can lead to a decrease in the power factor of the motor, affecting the power factor of the entire power system. Misalignment can lead to an increase in temperature rise of the motor and shorten its service life. Misalignment can also generate noise and vibration, which can have an impact on the surrounding environment and human health.

 

In actual operation, it is necessary to regularly inspect and maintain the synchronous motor to ensure its normal operation. At the same time, measures need to be taken to prevent stepping out, such as stabilizing the power supply voltage, regularly inspecting and maintaining the motor itself, etc.

C

    • Aaron

      04-23
      2、 Reasons for synchronous motor stepping out
1. Unstable power supply voltage: If the input voltage of the synchronous motor is unstable, it can cause the motor speed to be unstable or even out of step.
2. Load change: The motor is prone to out of step phenomenon under load changes or sudden changes.
3. Frequency change: The speed of the synchronous motor is related to the frequency of the power supply. If the frequency of the power supply changes, it will cause the synchronous motor to lose step.
4. Harmonic interference: Modern power electronic equipment is widely used, which can generate electromagnetic wave interference of various frequencies, leading to synchronous motor out of step phenomenon.
5. Improper motor design: The design parameters of the motor, such as pole number, rotor length, etc., do not match the frequency of the power supply used, which may also lead to synchronization failure of the synchronous motor.
        See translation
        Reply
      Relevant recommendations
      Collect
      Report