How Automatic Voltage Regulator Works? What Are the Uses and Benefits of Automatic Voltage Regulator

The automatic voltage regulator (AVR) is an electric system that maintains steady voltage level of electrical equipment at the same load. The AVR controls voltage fluctuations to provide a steady, stable power supply. The voltage can be tapped, spiked or increased and electrical equipment can be destroyed without an automatic voltage regulator. AVR, therefore, has a servomechanism system inside it that searches for correct voltage when spikes arise in order to preserve the necessary voltage level that eventually protects your appliance. ???????

How Automatic Voltage Regulator works?

It is founded on the theory of detecting errors. The output voltage of the AC generator is generated by a voltage source and then fixed, filtered and compared to the source. The imbalance between the current voltage and the reference voltage is referred to as the error voltage. This error voltage is increased by an amplifier and then delivered to the primary exciter or pilot exciter.

Thus, the enhanced error signals monitor the key or pilot agitation through a buck or boost motion (i.e. controls the fluctuation of the voltage). Exciter output control contributes to control of the main alternator terminal voltage. 

Uses of Automatic Voltage Regulator 

The main uses of an AVR are as follows:

• It regulates the processor voltage and the operation of the computer is closer to steady state equilibrium. 
• It separates the reactive load between the parallel-operated alternators. 
• Automatic voltage regulators minimize the overvoltage that happens due to abrupt device load failure. 
• It increases the system's enthusiasm under fault conditions such that there is optimum synchronization capacity at the time of fault clearance. 

Whenever there is a drastic change in the load of the alternator, there should be a modification in the excitation mechanism to have the same voltage under the current load setting. This can be achieved with the aid of the automated voltage regulator. The automated voltage regulator device works in the exciter region and adjusts the output voltage of the exciter and the field current. During the violent fluctuations, the ARV does not respond quickly. 

Benefits of Automatic Voltage Regulator 

• They're cheap.
• Very reliable output voltage regulation
• Give good tolerance for device errors and overload
• Increased resistance for power factor and frequency variations
• Strong Line Insulation
• Wide variety of KVA rating, voltage and configuration options available

An AVR is required to retain voltages within the specified range that can be handled by electrical devices using that voltage. As they keep a consistent voltage level for electrical equipment loads demanding a stable, consistent supply of voltage, it is important that you make use of AVRs to guarantee that your equipment is safe. If you do not use an AVR, the voltage will choke, spike or pulse and destroy your electrical equipment. 

In order to get a fast response, quick-acting voltage regulators are used based on the concept of overshooting the target. When the load increases the excitation of the device often increases in the overshoot mark theory. Before the voltage increases to the equivalent value of the elevated excitement, the regulator decreases the excitement of the right value. 

For more detailed information regarding the uses and benefits Automatic Voltage Regulators, and how it, speak to Multilinkeng Today!