Comparison of integer and fractional order robust controllers for DC/DC converter feeding constant power load in a DC microgrid. (December 2017)

• Record Type: Journal Article
• Authors: NasimUllah, ; Asghar, Muhammad; Khattak, Abraiz; Rafiq, Muhammad Mohsin
• Is Part Of: Sustainable energy, grids and networks. Volume 12(2017)
• Page Start: 1
• Page End: 9
• Publication Date: 2017-12
• Subjects: Constant power loads -- Converters -- DC microgrid -- Terminal sliding mode controllers -- Fractional calculus; Renewable energy sources -- Periodicals; Smart power grids -- Periodicals; Electric power systems -- Periodicals; 333.794
• DOI: 10.1016/j.segan.2017.08.003
• Languages: English
• ISSNs: 2352-4677

Abstract

Abstract: DC/DC converter's when feeding the constant power loads (CPLs) are sensitive to the instabilities due to the induced negative impedance characteristics. An efficient control system is crucial to overcome the de-stabilization problem for the DC/DC converters. This article proposes an integer and fractional order terminal sliding mode (TSMC) controllers for DC/DC boost converter feeding the constant power load (CPL) in a typical DC microgrid configuration. Novel integer and fractional order nonlinear sliding manifolds are proposed and based on the Lyapunov theorem terminal sliding mode controllers (TSMC) are formulated and its stability is guaranteed. Finally, numerical simulations are presented to compare the performance of the integer TSMC, fractional TSMC and classical SMC.