Automatic Voltage Stabilizer, What Is The Basic Principle Of Automatic Voltage Stabilizer?

Automatic Voltage Stabilizer

Due to the instability of the mains supply voltage, especially in some power supply places where the voltage fluctuation is large, it affects the normal operation of electrical equipment and may also cause damage to electrical equipment. The automatic voltage stabilizer is a voltage stabilizing device that can use the working voltage of electrical equipment to be basically stable.

Basic principle

Although there are many types of automatic voltage stabilizers, the working principles of the main circuits are different, but basically (except for AC parameter voltage stabilizers) they are basically composed of input switch sampling circuit, control circuit, voltage

adjustment device, output protection device, drive device, display and and its basic working principle:

1. Input switch: As the input working switch of the voltage stabilizer, a limited current protection air switch type small circuit breaker is generally used, which can protect the voltage stabilizer and electrical equipment.

2. Voltage regulator: It is a device that can adjust the output voltage. It can increase or decrease the output voltage and is the most important component of the voltage stabilizer.

3. Sampling circuit: It detects the output voltage and current of the voltage stabilizer and transmits the output voltage change to the control circuit.

4. Drive device: Since the control electrical signal of the control circuit is weak, a drive device is needed to amplify and convert the power.

5. Drive protection device: A device that connects and disconnects the output of the voltage regulator, generally using relays, contactors, or fuses.

6. Control circuit: It analyzes the sampled circuit detection model. When the output voltage is high, it sends a control signal to reduce the voltage to the drive device, and the drive device drives the voltage regulator to lower the output voltage. When the output voltage is low, it sends a control signal to increase the voltage to the drive device, and the drive device drives the voltage regulator to increase the output voltage, so that the output voltage is stable to achieve the purpose of stable output.

When it is detected that the output voltage or current exceeds the control range of the voltage regulator. The control circuit will control the output protection device to disconnect the output to protect the electrical equipment, and the output protection device is connected to the output under normal circumstances, and the electrical equipment can have a stable voltage supply.