Document Type : Research Paper


1 Electrical Engineering Department, College of Engineering, University of Mosul, Mosul, Iraq

2 Electrical Engineering Department, Collage of Engineering, University of Mosul , Mosul, Iraq


When connecting two generators together (in parallel), there are conditions that must be met and fulfilled before commencing the electrical connection process, which are known as synchronization conditions. In this paper, the loss of equality voltages which is one of the synchronization conditions will be represented when performing the connection process using Matlab and surveying the impact of this on the performance of the system and the extent of damage that may result from it. The presented analysis shows the influence of faulty synchronization on the following physical quantities: internal voltage, stator current, stator voltage, angular mechanical speed, terminal voltages which are the most vulnerable. In addition, knowing the type of fault (short circuit fault) caused by the faulty synchronization condition. In this paper, over and under voltage schemes have been implemented by using MATLAB/SIMULINK.


Main Subjects

[1]     S. Sheeba Rani1, V. Gomathy, R. Geethamani, Rameez Khan.R, Mohan Raj.D. Embedded Design in Synchronization of Alternator Automation. International Journal of Engineering & Technology, 7 (2.24) (2018) 460-463.
[2]     Adam Gozdowiak. Faulty Synchronization of Salient Pole Synchronous Hydro Generator. Energies 2020, 13, 5491; doi:10.3390/en13205491.
[3]     Erdal Bekiroglu,Alper Bayrak. Automatic synchronization unit for the parallel operation of synchronous generator. Article May 2009 DOI: 10.1109/EURCON.2009.5167720.
[4]     Michael J. Thompson. Fundamentals and Advancements in Generator Synchronizing Systems. SEL Journal of Reliable Power, Volume 3, Number 1, March 2012.
[5]     Ahmad I. Abo Dabowsa. Design of an Automatic Synchronizing Device for Dual- Electrical Generators Based on CAN Protocol. A Thesis Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science in Electrical Engineering. June ,1432-2011.
[6]     Pengfei Tian1, José M. Guerrero2, Kumar Mahtani1, and Carlos A. Platero.   Instantaneous Specific Protection Method against Faulty Synchronizations of Synchronous Machines.   Citation information: DOI 10.1109/ACCESS.2021.3089853, IEEE Access 9.
[7]     Thompson, M.J. Fundamentals and advancement in generator synchronizing systems. In Proceedings of the 65th Annual Conference for Protective Relay Engineers, College Station, TX, USA, 2–5 April 2012; pp. 203–214.
[8]     Pablo Marchi, Pablo Gill Estevez, Francisco Messina, Cecilia G. Galarza. Loss of Excitation Detection in Synchronous Generators Based on Dynamic State Estimation. Downloaded on April 08,2020 at 23:14:50 UTC from IEEE.
[9]     W.JARZYNA. A survey of the synchronization process of synchronous generators and power electronic converter. Bulletin of the polish academy of science,vol.67, No.6,2019.
[10] Arif Iqbal, Girish Kumar Singh. Teaching synchronization of synchronous generator using virtual laboratory. IETE Journal of Education , 16 Mar 2022