Study on the use of discretized sliding-mode controller in DC-DC switching regulators

Author

Maity, Somnath ; Roy, Debjyoti

Author_Institution

Dept. of Electr. Eng., Nat. Inst. of Technol., Rourkela, India

fYear

2012

fDate

12-14 Jan. 2012

Firstpage

22

Lastpage

27

Abstract

In this paper, we study the application of discretization of equivalent SM controller in DC-DC buck converters. Based on this control logic, we derive the two-dimensional (2-D) piecewise smooth (PWS) discontinuous map of the converter system. Some inherent dynamical properties of system´s steady-state behaviors (i.e., the bifurcation behaviors) are also studied. The presented one- and two-parameter bifurcation digrams show the domains of existence of different oscillatory modes and their sequence of occurrence of the converter system, which are quite different from the bifurcation behaviors observed in 2-D PWS continuous maps [1].

Keywords

DC-DC power convertors; bifurcation; discrete systems; switching convertors; variable structure systems; 2-D PWS continuous maps; DC-DC buck converter system; DC-DC switching regulators; control logic; discretized sliding mode controller; equivalent SM controller; inherent dynamical properties; one-parameter bifurcation diagrams; oscillatory modes; steady-state behaviors; two-dimensional piecewise smooth discontinuous map; two-parameter bifurcation diagrams; Bifurcation; Conferences; Orbits; Switches; Tin; Trajectory; 2-dimensional piecewise smooth (PWS) discontinuous map; DC-DC converter; Sliding mode (SM) control; complexity; digital sliding mode controller;

fLanguage

English

Publisher

ieee

Conference_Titel

Variable Structure Systems (VSS), 2012 12th International Workshop on

Conference_Location

Mumbai, Maharashtra

ISSN

2158-3978

Print_ISBN

978-1-4577-2066-6

Electronic_ISBN

2158-3978

Type

conf

DOI

10.1109/VSS.2012.6163472

Filename

6163472