The Difference Between Digital AVR and Excitation System And Their Applications

The equipment we are using these days requires a lot of electric energy. The whole workspace is based on the appliances that use electricity to function. The main issue that we face with these electrical appliances is that though they are designed to take the pressure of power surges etc. in most of the cases the short term or long term damage to the sensitive parts of the machinery in not avoidable.

It is important to have a barrier between the power supply and the equipment so that they do not get affected by high or low voltage.

Digital AVR (Automated Voltage Regulators) and their applications

These voltage controllers are generally used in small setups. They are designed to take control over the output of a brushless excited synchronized generator. It is very common to install the generators in a rugged environment. The controller should be designed in such a way that it does not get affected by high or low temperature and humidity. These small regulators are very flexible as well. They have jumper selection option for single or three phase sensing.

These Digital AVR provides the ability to shed power load. They help in recovering generator speed and prevent damage that can be caused by the generator. They also help the machinery to pick up the critical load. In the case of over excitation, the regulator shut downs the generator and saves it from damage. Most of the regulators come in Plug and Play format thus the replacement or installation is very simple.

Digital Excitation and Control Systems and their applications

These voltage controllers known as Digital Excitation System are used in larger setups like power plants or generators which serve whole buildings. These are versatile control systems designed for synchronous generators and motors. These are ideal for new and retrofit applications. Most of the control systems can be customized and thus can provide solutions engineered to meet a wide variety of applications.

There are a number of protective functions integrated into the controller. These functions mainly avoid system damage caused by power surges. These controllers improve system reliability and stability by coordinating dual setting groups to match system conditions. In short, these controls avoid costly generator damage and help in improving the overall system performance.

What are the benefits of using Digital Excitation Systems

What are Digital Excitation Systems?

The digital excitation system is a synchronous part of a generator that generates electrical energy. This digital excitation system is responsible for controlling and protecting this synchronous machine if it finds itself under any stress or faulty conditions.

For instance, when in power plants, a sluggish terminal voltage recovery will affect the motor and contribute in breaking the system down. It is here, that the digital excitation systems come into play and improve performance. They are customized in mini sizes for small machines and in large sizes for big machines; employed majorly in power generating plants, namely, Hydropower plants, thermal power plants and the likes.

These basically are modern voltage control systems that bring in use power and flexibility for controlling machines.

A Digital Excitation System is based on Digital Signal Processor (DSP) based control device. These are user-friendly and easily accessible, with uncomplicated processes to operate and minimum possibility of trial and error.
They operate from a few MVA/ampere to more than 2100MVA/10000Ampere.

Why use Digital Excitation Systems?

They are extremely stable than the older excitation systems that were used in power plants that use state of the art integral power stabilizing system. This happens by adjusting the field current extremely fast to the changing operational conditions.

The operating interface and parameters of a digital excitation system are much safer and effective, in contrast to its older counterparts. It has various inbuilt protection functions in the controller that primarily stop and help reduce system damage.

Digital excitation system also improves reliability and stability of the system by coordinating dual settings groups to protect the generation system conditions.
The DSP-based control system has an AC power which is tapped off from the stepped down generator terminal which is rectified and then fed to the generator; therefore, controlling the generator voltage output.

The Digital Excitation System is a much more comprehensive way to control voltage and Amtech Power provide safely customized and properly engineered digital excitation systems in India.