Development of mechanical coupling and exciter system in synchronous generators

Authors

DOI:

https://doi.org/10.15587/1729-4061.2021.246619

Keywords:

synchronous generator, mechanical coupling, exciter system, rectifier, three-phase generator, diesel generator

Abstract

Power is generated in a variety of ways, including renewable energy, nuclear power, and burning of fossil fuels. The majority of our power is currently generated by burning fossil fuels, mostly natural gas and coal, to spin turbines attached to an electromagnetic generator. The main advantage of AC generation is that the voltage levels can be altered up and down with transformers, allowing electricity to be sent across long distances to the loads that demand it. The excitation system demand for large synchronous generators with a few hundred-megawatt ratings becomes very enormous. The challenge of transmitting such a big amount of power through high-speed sliding contacts becomes daunting. Mechanical coupling with exciter for synchronous generators is essential to mitigate such problems as the corrected output is linked directly to the field winding. This paper aims to develop a simulation of a 3-phase diesel engine-based 2 MVA/400 V synchronous generator with mechanical coupling and an exciter system. The developed simulation of the synchronous machine is set to deliver 25 % of its rating value (500 kW) till the time of 3 sec. Then, additional power of 1 MW is switched at t=3 sec via a 3-phase circuit breaker. The dynamic response of field current and field voltage of the simulation shows reasonable step performance as the steady-state time is less than 3 sec. The control of the excitation system allows the generator to maintain voltage, control reactive power flow, and assist in maintaining power system stability. The simulation was accurate when measuring the voltage and current under these changes. This analysis can help to investigate further integration with renewable energy sources.

Supporting Agency

  • The authors gratefully acknowledge the Department of contracting, Energy Transmission Company, south region-Basra-Iraq for the support.

Author Biography

Raad Lafta Damij, Energy Transmission Company

Head of Department

Department of Contracting

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Published

2021-12-24

How to Cite

Damij, R. L. (2021). Development of mechanical coupling and exciter system in synchronous generators . Eastern-European Journal of Enterprise Technologies, 6(8 (114), 34–40. https://doi.org/10.15587/1729-4061.2021.246619

Issue

Vol. 6 No. 8 (114) (2021): Energy-saving technologies and equipment

Section

Energy-saving technologies and equipment

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Copyright (c) 2021 Raad Lafta Damij

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