What is the reason for the unstable speed of the inverter? How can two different inverters have the same speed?

What is the reason for the unstable speed of the inverter?

There may be many reasons for the unstable speed of the inverter, the most common ones include:

Load change: When the load changes greatly, it will cause changes in the inverter output voltage or current waveform, resulting in unstable output speed.

Improper PID parameter settings: Improper PID parameter settings can also lead to unstable speed, such as the proportional coefficient, integral time, differential time and other parameters are set too large or too small.

Feedback signal problem: The inverter uses feedback signals to sense the actual operating conditions of the motor. If the feedback signal is abnormal or damaged, it will also cause unstable speed.

Power supply problem: Poor voltage stability of the input power supply, poor contact of the power supply line or impure power supply waveform can also cause unstable output speed.

Inverter failure: Damage to the IGBT module, aging of the capacitor, and failure of the motor drive circuit can also lead to unstable speed.

For the problem of unstable inverter speed, it is necessary to find the specific cause through careful inspection and analysis, and make adjustments and repairs according to the specific situation. It is recommended that when using the inverter, use it correctly according to the requirements of the operation manual and pay attention to regular maintenance and care.

How to synchronize the speed of two different inverters

To synchronize the operation of two different inverters, the following steps are required:

Select the same inverter model and parameters to ensure that the two inverters have the same control logic and output characteristics.

According to actual needs, select the same control method, such as constant speed, constant torque, constant pressure, etc.

Set the same output parameters such as speed, current, voltage, etc. in the two inverters to ensure that the electrical signals they output are consistent.

The two inverters are linked through a communication interface or an external encoder to ensure that their output signals change synchronously.

During the debugging process, the PID parameters of the two inverters need to be adjusted and optimized to ensure that their control response speed and stability are consistent.

In short, to make two different inverters run synchronously, you need to select the same model and parameters, set the same output parameters, achieve linkage through communication interface or encoder, and adjust and optimize the PID parameters to ensure that their control response speed and stability are consistent.

What is the reason for the unstable speed of the inverter control?

There may be many reasons why the inverter control speed is unstable. The following are some common reasons:

Power supply voltage fluctuation: Power supply voltage fluctuation will cause output voltage instability, thus affecting the control of the inverter.

Unbalanced load: Unbalanced load will cause the output current of the inverter to be unstable, thus affecting the control.

Incorrect inverter parameter settings: Incorrect inverter parameter settings will lead to unstable control.

Internal fault of the inverter: Internal fault of the inverter will cause unstable control.

Mechanical problems: Mechanical problems, such as bearing wear, loose transmission parts, etc., can cause unstable inverter control.

To solve the problem of unstable control, you need to first find the specific cause and then make targeted adjustments and maintenance.