Finite-time Adaptive Sliding Mode Control of DC Microgrids with Constant Power Load

• Type: Article in International Conference Proceedings Book
• Date: 2021

Authors

Shekoufeh Neisarian (Author) Other; Mohammad Mehdi Arefi (Author) Other; Navid Vafamand (Author) Other; Mohammad Javadi (Author) Other; Sérgio F. Santos (Author) Other; João P. S. Catalão (Author) FEUP

Conference proceedings International

Title: 2021 IEEE MADRID POWERTECH

Pages: 1-6

14th IEEE Madrid PowerTech Conference (IEEE POWERTECH)

ELECTR NETWORK, JUN 28-JUL 02, 2021

Indexing

ISI Web of Knowledge - 8 Citations

Scopus - 13 Citations

Other information

Authenticus ID: P-00V-JF4

DOI: 10.1109/powertech46648.2021.9495071

Abstract (EN): Due to recent advances in power electronic systems, direct current (DC) microgrid (MG) topology is considered as a promising solution to unite pollution-free renewable energy sources and DC loads. This paper investigates the issue of finite-time robust adaptive stability and tracking issue of a nonlinear direct current (DC) microgrid (MG) comprising a buck converter, linear resistive loads, and nonlinear constant power loads (CPLs). The developed approach is based on a sliding mode controller (SMC) and a nonlinear and nonsingular sliding surface. It is proved that the tracking error converges to zero in a finite-time in the presence of matched disturbance input and uncertainties. The novel controller manipulates the buck converter of the source side to regulate the DC bus voltage by counteracting the destabilizing effect of CPLs and disturbances. Further, the finite value of the convergence time is presented and the effects of the SMC parameter on the stability and transient performance are evaluated. Lastly, numerical simulations are conducted to illustrate the merits of the developed control approach in the viewpoints of fast reference tracking and robust stability.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6