Today, the voltage stabilizers have become mandatory for office, commercial and industrial use. The voltage stabilizers aim at protecting any machine and electronic equipment from voltage fluctuations. They maintain constant voltage irrespective of change in the incoming voltage and the external conditions. During the 1990s, manual stabilizers were widely used to buck the voltage. These stabilizers are equipped with electromagnetic relays to deliver constant voltage. After some years, electronic circuitry came into existence and was considered an alternative to automatic voltage regulators.
Main components of servo stabilizer. However, the latest technology of the voltage stabilizer is servo stabilizer as of now. Knowing how important it is to get one quality servo stabilizer for industrial purpose, we come up with a detailed guide of servo stabilizer.
What is Stabilizer?
Voltage fluctuation can cause damage to the load. If there are sudden load changes due to some faults in the power system, voltage fluctuation occurs. There are times when these voltage fluctuations can reduce the life span of any home appliances. So, industries make use of the voltage regulator to ensure that there is a stable supply of voltage to the load and to make sure that there is no or minimal cause of voltage fluctuations. Knowing how important it is to use a voltage regulator to avoid fuse problems, the stabilizer is employed in many commercial applications.
A stabilizer is a device which is used to maintain a steady state. Depends on the quality and specification of the voltage, there are different types of stabilizers out there to maintain stability for a certain time. In general, the stabilizer is used to maintain a stable voltage quantity in the power system is known as a voltage stabilizer. It works when the control element is used to process the unregulated input to regulated output.
A voltage stabilizer is designed in such a way that it can maintain a stable voltage level to ensures constant power supply even if there is any changes or fluctuations in the voltage supply to protect the appliances. When voltage regulator provides a constant voltage level to the home appliances it is called as a voltage stabilizer. The need and importance of this voltage stabilizer are vast and hence it is the most important device in commercial industries.
There are different types of voltage regulators out there such as electromechanical voltage regulators, automatic voltage regulators, active regulators etc. In the same way, there are various types of voltage stabilizers out there such as automatic voltage stabilizers, DC voltage stabilizers, AC voltage stabilizers. Let us see how it works exactly.
We can study the working of the voltage stabilizer by analyzing the different types of voltage stabilizers.To maintain a constant level of voltage, a voltage regulator is used. It is a device designed to automatically manage all the constant level of voltage. There are many types of Voltage regulator. For instance, one can be using a feed-forward design approach while the other one can be using negative feedback.
Types of Voltage Regulator
Generally, we can divide the voltage regulator into 3 types. They are
– Electronic Voltage Regulators
– Electromechanical Regulators
– Automatic voltage regulator
Electronic Voltage Regulator
The electronic voltage regulator is made from a series of Diodes. Due to its V-I curves shape, the voltage across all the diodes slightly changes. It is because of the change in input. The designs work fine if the precise level of voltage and efficiency does not play an important role.
Electromechanical regulators are used for maintaining the constant voltage supply on AC power distribution lines. Electromechanical Regulators are known as voltage stabilizers. To be used in the autotransformer, these regulators adapt servomechanism operations.
The voltage regulation is completed by doing the coiling of the sensing wire. It makes an electromagnetic field. The field attracts the moving ferrous core to the gravitational force. As a result, when the voltage increases, so do the current. Also, the magnet is connected to a power switch. It opens when the magnet moves into the field. When the voltage decreases, So does the current and hence the spring tension is released. Therefore, by this, the switch is closed and the power starts flowing once more. The servomechanism is used for just switching the tap when the voltage range does not lie in the specified value. The secondary voltage of the electromechanical regulator can be changed to get the desired values of the output voltage.
Automatic voltage regulator
The automatic Voltage regulator is generally used in power stations. It has automatic voltage regulators (AVR) by which it can stabilize and maintain the voltages when the generator load changes. Traditional voltage regulators used to use the electromechanical system while today the automatic voltage regulator uses solid-state devices. Basically, an AVR compares all the output voltage of the generator to a set point. It then sends a signal using which the excitation is adjusted.
Relay type of voltage stabilizer
In this type, stabilizer constitutes an electronic circuit, relay circuit, controller unit, rectifier, and some tiny components. Whenever voltage falls or raise, the control circuit switches the relay to connect the tapping to the output voltage. It changes the output voltage level to 10%. This is why it is used only for low rating appliances in office, home and industry as well. There are times when some electrical equipment may suffer from several limitations such as less durability, power down, unexpected performance, coil damage etc.. To avoid these fluctuations in the multinational companies, the relay type voltage stabilizer makes much sense. Despite it is the outdated stabilizer, it is widely used for low power applications in schools, office etc.
Difference between oil cooled & air-cooled stabilizers
There are two types of servo models available in the market today. The one is servo air cooled stabilizer and the other is servo oil cooled stabilizer. Both of these stabilizers work on the same principle. However, the way they show their efficiency is unique.