Logic Control of Static Excitation System in Power Alternators using PLC
I.William Christopher1, G.S.Ashwinraj2, P.Jeneve Vinolia3, M.Kaviya4

1I.William Christopher, Associate Professor, EEE Department, Loyola-ICAM College of Engineering and Technology (LICET), Anna University, Chennai, India.
2G.S.Ashwinraj, Faculty of Information and Communication, College of Engineering Guindy, Anna University, Chennai, India.
3P.Jeneve Vinolia, Management Studies, Loyola Institute of Business Administration, (LIBA), Chennai, India.
4M.Kaviya, Cortex Consulting Private Limited, Chennai, India.
Manuscript received on July 20, 2019. | Revised Manuscript received on August 10, 2019. | Manuscript published on August 30, 2019. | PP: 3971-3978 | Volume-8 Issue-6, August 2019. | Retrieval Number: F9080088619/2019©BEIESP | DOI: 10.35940/ijeat.F9080.088619
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Logic control of Static Excitation System (SES) in Power Alternators deals with the use of PLC to control the terminal output voltage of the Alternator in a more simplified and efficient manner using a closed loop system. A closed loop control with negative feedback is designed, which involves AVR, Pulse Generator, Pulse Amplifier, Limiters, Power System Stabilizers with an Auto and a Manual channel. Disruption in the terminal voltage is caused by faults. These faults were rectified earlier by Electro Mechanical relays. Now we are at a major technological Change of Analog to Digital control. It reduces the complexity of the control system, and eliminates the need of wide range of contactors and coils to energies the relay. The best way to maintain the stability of the system is to identify the need and rectify it. This paper proposes an easy and an efficient design for fault detection and elimination using PLC based excitation system in power alternators.
Keywords: Static Excitation Systems (SES), Static Excitation Equipment (SEE), Power Alternators, Programmable Logic Controller (PLC), Faults