Automatic AC Voltage Regulators

With the rapid development of society, there is an increasing number of electrical equipment. The aging and lagging development of power transmission and distribution facilities, as well as poor design and insufficient power supply, result in unstable voltage, either high or low, and a wide range. And the various loads we use now, including some large inductors, capacitors, switching power supplies, etc., not only obtain electrical energy from the power grid, but also affect the power grid itself, causing the power supply quality of the power grid or local power grid to deteriorate, resulting in waveform distortion or frequency drift of the mains voltage. In addition, unexpected natural and man-made accidents, such as earthquakes, lightning strikes, open circuits, or short circuits in power transmission and transformation systems, can endanger the normal supply of electricity and affect the operation of loads. Unstable voltage can cause fatal injuries or malfunctions to equipment, affecting production, causing delivery delays, and unstable quality. An AC voltage regulator is a power supply device that can automatically adjust the output voltage. The function of an AC voltage stabilizer is to stabilize the power supply voltage that fluctuates greatly and does not meet the requirements of electrical equipment within its set value range, so that various circuits or electrical equipment can work normally at the rated working voltage.

A fully automatic AC voltage regulator is a device that does not require manual intervention. When voltage fluctuations occur, the regulator will automatically operate and adjust the voltage to the appropriate rated voltage range. At present, fully automatic AC voltage regulators can be roughly divided into three categories: automatic adjustable power supplies, parameter adjustable power supplies, and switching power supplies. The advantages and disadvantages of different types of voltage regulators vary. When choosing a voltage regulator, we need to choose different types based on the characteristics of the environment.

A.There are three types of automatic voltage regulators for communication:

1. Mechanical adjustment type: The advantages are simple structure, low cost, and small output waveform distortion. Disadvantages: Easy to burn, slow pressure adjustment.

2. High power compensation type: The advantages are good anti-interference performance, high voltage regulation accuracy, fast response, and simple circuit. Disadvantages: Large input current distortion, low source power factor, and phase shift between output voltage and input voltage.

3. Change tap type: The advantages are simple circuit, wide voltage regulation range, and low price. Disadvantages: Low voltage regulation accuracy and short working life.

B.Switching stabilized power supply:

Advantages: Good voltage stability and strong control function. Disadvantages: Complex circuit and high price.

C.Adjustable voltage regulator power supply:

Advantages: Simple structure, high reliability, strong anti-interference ability. Disadvantages: High energy consumption, high noise, heavy weight, and high cost.

D.Application of AC voltage stabilizer:

Voltage stabilizer application: It can be widely used in monitoring equipment, precision machine tools, computed tomography (CT), precision instruments, testing equipment, elevator lighting, imported equipment, production lines and other places that require stable power supply voltage in industrial and mining enterprises, oil fields, railways, construction sites, schools, hospitals, postal and telecommunications, hotels, scientific research and other departments; It is also used for users with low or high supply voltage and large fluctuations at the end of low-voltage distribution networks, as well as electrical equipment with large load changes. It is particularly suitable for all voltage stable electrical places that require high grid waveforms.