Can an inverter control the speed of an excitation motor?

If you want to connect the excitation coil to change the speed of the motor, basically no, first of all, the excitation coil changes the speed, which is achieved by changing the magnitude of the excitation flux, so that is, changing the excitation current, changing the output frequency can change the effective value of the output current, but the effect is not obvious.

Furthermore, because the excitation coil is a coil, the characteristic of the coil is to prevent the change of current, that is, the method of speed regulation by changing the excitation current is very slow.

Inverter: Variable-frequency drive (VFD) is a power control equipment that uses inverter technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply. The inverter is mainly composed of rectifier (AC to DC), filtering, inverter (DC to AC), braking unit, drive unit, detection unit, microprocessor unit, etc.

You said electromagnetic speed control motor, right? It can be controlled, but the original governor is to detect the speed feedback to adjust the excitation current, the proportion of feedback after the inverter adjusts the speed changes, it is easy to cause the excitation to burn the magnetic field coil, it is recommended to use an ordinary motor, otherwise the amount of maintenance will be large in the future!

A small change will do! After adding the inverter, you have to continue to use the original excitation part to adjust the excitation to the maximum. You can use a frequency converter to regulate the speed with the motor.

Hehe, the frequency converter is to change the frequency of the current to change the speed.

How do you install the exciter?

Packed in**?

No. The synchronous motor is controlled by the closed-loop control of the speed of the servo drive.

The output frequency of the inverter is determined by the speed of the synchronous motor, and the frequency is adjusted accordingly when the motor speed changes, and the adjustment method is calculated by the angle collected by the encoder for electrical angle calculation, and the calculation of the electrical angle is determined by the encoder angle and the number of magnetic pole sectors.

After calculating the electrical angle, the direct current is adjusted into a three-phase electric current through SVPWM and sent to the motor, and if you want to increase the running speed of the motor, you only need to increase the output current (torque).

To control the speed of the motor, you can use voltage regulation and frequency conversion.

Nowadays, the frequency conversion method is commonly used, and the speed of the motor is changed by changing the operating frequency of the motor through the frequency converter. The frequency of the inverter can be set at will, and the motor will have different speeds for different output frequencies.

For specific applications, please consult some information on frequency converters. Learn how the inverter works and how to control the speed of the motor.

Extended information: The speed of the engine is related to the number of work times per unit time or the effective power of the engine, that is, the effective power of the engine changes with the different speeds. Therefore, when indicating the effective power of the engine, its corresponding speed must also be indicated.

Usually a speed sensor is used to measure the speed of the engine corresponding to the signal teeth on the flywheel.

The engine can generally reach 700-1100r min at idle.

The maximum rotational speed is the maximum value that can be achieved under certain conditions. For example, the speed of the motor spindle in the hard disk, that is, the maximum speed that the hard disk platter can achieve under normal working voltage conditions.

If it is a squirrel cage three-phase asynchronous motor, it can be controlled by a frequency converter.

Different motors have different speed control schemes.

At present, there are several seven speed regulation methods.

1. Pole change logarithmic speed regulation method.

Second, the frequency conversion speed regulation method.

3. Cascade speed regulation method.

Fourth, the winding motor rotor string resistance speed regulation method.

Fifth, stator pressure regulation and speed regulation method.

Sixth, electromagnetic speed regulation motor speed regulation method.

7. Hydraulic coupling speed regulation method.

However, at present, the most chosen method is the frequency conversion speed regulation method.