Artigo em periódicoOpen Access
Novel Robust Methodology for Controller Design Aiming to Ensure DC Microgrid Stability Under CPL Power Variation
LUCAS-MARCILLO, KEVIN E.2019LUCAS-MARCILLO, KEVIN E.; PLAZA, DOUGLAS A.; BARRA, WALTER; MEDEIROS, RENAN L. P.; ROCHA, ERICK MELO; VACA-BENAVIDES, DAVID A.; RIOS, SARA J.; HERRERA, EFREN V
Resumo
Resumo
In recent years, dc microgrid (MG) is increasing rapidly in electric power grids and other isolated systems, integrating more efficiency and suite better some of the renewable energy sources, storage units, and dc loads. However, dc MG stability analysis becomes a challenge when constant power loads (CPLs) are applied to dc bus, which introduces destabilizing effects in the system due to its negative impedance characteristics. This paper presents a novel robust controller, based on linear programming based on the Chebyshev theorem as a robust control technique considering the Kharitonov’s theorem that ensures the minimization of the total deviation from the desired performance in a closed-loop system, specified by a family of characteristic polynomials. The purpose of the proposed controller is to tightly regulate the dc bus voltage, ensuring MG stability due to the effects of power variation on CPLs. The simulation and experimental tests are performed by using a MATLAB/Simulink simulator and a developed prototype of the DC MG system, respectively, to ratify the robustness and effectiveness of the proposed method of robust controller design.
Autoria
Autores do grupo (1)
A lista completa de autores está no topo da página. Abaixo, apenas os pesquisadores do e-Controls vinculados a esta publicação.
palavras-chave
Palavras-chave
DC microgridconstant power loadrobust controller designKharitonov's theoremlinear programmingDC bus voltage regulationmicrogrid stabilitypower variation
Volume
7
Páginas
64206-64222
Editora
Institute of Electrical and Electronics Engineers (IEEE)
Status
Published
links
Links e arquivos
Artigo em periódico