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| Main Authors: | , , , , |
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| Format: | Recurso digital |
| Language: | |
| Published: |
Zenodo
2025
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| Online Access: | https://doi.org/10.5281/zenodo.18073619 |
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Table of Contents:
- The excitation system maintains generator voltage and control reactive power flow. Older excitation system is provided with slip rings and brushless dc generator mounted on synchronous machine. Modern excitation system consists of a generator and they are brushless. Change in reactive power mainly affects the voltage magnitude. The generator reactive power is controlled using generator excitation control system called Automatic Voltage Regulator (AVR). With increase in reactive power, there is drop in voltage magnitude of generator. Potential transformers sense the variation in voltage magnitude, which is rectified and compared to set input reference. The field exciter and its terminal voltage is controlled by amplified signal. As a result, current of generator filed is increased, which further results in increase in generator EMF. Hence reactive power is increased to new stable value, raising the terminal voltage to desired value. This paper presents the different modelling of AVR using MATLAB and its associated toolbox for varying power system parameters. Keywords: Reactive Power, Voltage Control, Automatic Voltage Regulator, Simulink