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Emulation of gas engine dynamics in uninterruptible power supply system
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School of Electrical Engineering |
Master's thesis
Electronic archive copy is available via Aalto Thesis Database.
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en
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43
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Abstract
In the quickly changing world of energy and environmental sustainability, replacing gas engines with efficient, eco-friendly models is increasingly essential [1]. Gas engines are reliable sources of electricity, but their reliance on fossil fuels is a major disadvantage. The gasoline engines pollute the environment and increase the concentration of greenhouse gas levels. Reducing the reliance on gasoline engines aligns with global efforts to develop sustainable power production technology, foster renewable energy sources, and combat climate change.
Data centers require a very reliable power source in order to function continuously, prevent data loss, and reduce downtime. Uninterruptible Power Supply (UPS) systems are crucial for maintaining this constant power supply, guarding against blackouts, and maintaining the stability of critical data center functions. This thesis investigates using a UPS system to emulate gas engine dynamics (GED).
The study models a dynamical system in two parts: first, the gasoline engine dynamical model that generates mechanical torque and rotor speed references; second, the Permanent Magnet Synchronous Generator (PMSG) model, where the gas engine model’s outputs are fed as inputs to the PMSG model to produce the required electrical power, which then serves as a reference for the UPS system to ensure stable, uninterrupted power.
Next, the UPS’s functionality is looked at, with a focus on its ability to provide steady, dependable electricity. The generated emulation models (gas engine and PMSG) are validated by simulations, showing how well they regenerate the dynamics of gas engines and PMSG. The findings demonstrate that the UPS provides control and efficiency. It is a workable backup power option when reference input is produced by their integrated model. Nevertheless, additional output regulation strategies, such as fast frequency reserve, aid in reducing the dynamical influence of gas engines for application-specific needs.
In conclusion, UPS technology’s simulation of gas engine dynamics offers a practical and sustainable backup power option.