Working principle of motor voltage regulator Кыргызстан

The working principle of a motor voltage regulator (also known as a servo motor voltage regulator or SVC/SBW voltage regulator) mainly relies on a servo motor (motor) and a carbon brush holder to regulate the stability of the output voltage. Here's how it works:

Voltage monitoring: When the input voltage of the power grid fluctuates, the control circuit of the voltage regulator will monitor the changes in the input voltage in real time.

Servo motor drive: Once a voltage fluctuation is detected, the control circuit sends instructions to the servo motor. The servo motor starts to rotate according to the command, driving the carbon brush holder to slide on the voltage regulator.

Changing the turns ratio: The sliding of the carbon brush holder on the voltage regulator changes the turns ratio of the voltage regulator. This is actually changing the voltage of the compensation transformer, since changes in the turns ratio directly affect the output voltage of the transformer.

Compensation voltage: By adjusting the voltage of the compensation transformer, the voltage regulator can generate a compensation voltage that is opposite to the fluctuations in the grid voltage. After this compensation voltage is superimposed on the grid voltage, the output voltage can be kept stable.

Feedback control: The voltage regulator also has feedback control function. The output voltage is sampled again and fed back to the control circuit to continuously monitor the stability of the output voltage. If the output voltage deviates from the set value, the control circuit will adjust the positions of the servo motor and carbon brush holder again to further adjust the compensation voltage to ensure the stability of the output voltage.

In general, the motor-type voltage regulator adjusts the turns ratio of the voltage regulator through the servo motor and carbon brush holder, thereby changing the voltage of the compensation transformer, generating a compensation voltage that is opposite to the fluctuation of the grid voltage, and ultimately maintaining the stability of the output voltage. . This kind of voltage regulator is usually used in applications that require higher stability and precision, such as industrial automation, medical equipment, precision instruments, etc.