A Robust Control Scheme for Renewable-Based Distributed Generators Using Artificial Hydrocarbon Networks

Antonio Rosales, Pedro Ponce, Hiram Ponce and Arturo Molina
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Antonio Rosales: School of Engineering and Sciences, Tecnologico de Monterrey, Campus Ciudad de Mexico, Ciudad de Mexico 14380, Mexico
Pedro Ponce: School of Engineering and Sciences, Tecnologico de Monterrey, Campus Ciudad de Mexico, Ciudad de Mexico 14380, Mexico
Hiram Ponce: Facultad de Ingeniería, Universidad Panamericana, Ciudad de Mexico 03920, Mexico
Arturo Molina: School of Engineering and Sciences, Tecnologico de Monterrey, Campus Ciudad de Mexico, Ciudad de Mexico 14380, Mexico

Energies, 2019, vol. 12, issue 10, 1-18

Abstract: Distributed generators (DGs) based on renewable energy systems such as wind turbines, solar panels, and storage systems, are key in transforming the current electric grid into a green and sustainable network. These DGs are called inverter-interfaced systems because they are integrated into the grid through power converters. However, inverter-interfaced systems lack inertia, deteriorating the stability of the grid as frequency and voltage oscillations emerge. Additionally, when DGs are connected to the grid, its robustness against unbalanced conditions must to be ensured. This paper presents a robust control scheme for power regulation in DGs, which includes inertia and operates under unbalanced conditions. The proposed scheme integrates a robust control algorithm to ensured power regulation, despite unbalanced voltages. The control algorithm is an artificial hydrocarbon network controller, which is a chemically-inspired technique, based on carbon networks, that provides stability, robustness, and accuracy. The robustness and stability of the proposed control scheme are tested using Lyapunov techniques. Simulation, considering one- and three-phase voltage sags, is executed to validate the performance of the control scheme.

Keywords: distributed generators; renewable energy; virtual synchronous generator; robust control; intelligent control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
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