What is a Voltage Stabilizer?

by Mog Lix Shop Online for Industrial Tools, Safety Equipment
A voltage stabilizer is a system which is designed for automatically maintaining a constant voltage level. This device either use a simple feed-forward design or include negative feedback. It may also use an electromechanical mechanism or electronic components. Depending on the design, it may be utilized for regulating one or more AC or DC voltages. Voltage stabilizers are found in various devices like computer power supplies where they stabilize the DC voltages used by the processor and other elements. These devices control the output of the plant in automobile alternators and central power station generator plants. In an electric power distribution system, voltage stabilizers can be installed at a substation or a long distribution lines so that all the customers receive steady voltage independent of how much power is drawn from the line.

Types of Voltage Stabilizers

AC Voltage Stabilizers: AC voltage stabilizers are further divided into three types: 

  • Coil rotation AC voltage regulator: This is an older type of voltage regulator which works on the principle similar to the variocoupler. 
  • Electromechanical regulator: These stabilizers are used to regulate the voltage on AC power distribution lines and are also called as voltage stabilizers or tap-changers. 
  • Constant voltage transformer: This stabilizer uses a tank circuit which is composed of a capacitor for generating a nearly constant average output voltage with varying input current and a high-voltage resonant winding.

DC Voltage Stabilizers: These devices start conduction at a specified voltage and they conduct maximum current for holding the specified terminal voltage.

Automatic Voltage Stabilizer: These type of stabilizers are used on generator sets, emergency power supply, oil rigs, and many others. This is an electronic power device which is used for providing variable voltage. 

Why Voltage Stabilizers are Needed?

Generally, each and every electrical equipment is designed for a wide array of the input voltage. Depending on their sensitivity, the working range of the equipment is limited to specific values. For instance, some equipment can tolerate ± 10 percent of the rated voltage while others can tolerate ± 5 percent or less. The frequent voltage fluctuations are quite common in many areas, especially at terminated lines. The most common reasons for voltage fluctuations are electrical faults, lighting, faulty wiring, and periodic turning off the device. These fluctuations create mishap to the electrical equipment or appliances.

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Created on Jan 23rd 2019 05:23. Viewed 751 times.


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