Taming Heterogeneity and Complexity of Embedded Control

Sliding Control and Optimization in a Full Bridge Boost Converter

Luis M. Sanz^{1 a} — Alan S.I. Zinober ^a — Domingo Biel ^b Enric Fossas ^c — Josep M. Olm ^d

^a Department of Applied MathematicsUniversity of SheffieldSheffield, United Kingdom{ap4lms,a.zinober}@sheffield.ac.uk

^b Department of Electronic EngineeringTechnical University of CataloniaBarcelona, [e-mail]

^c Institute of Industrial and Control EngineeringTechnical University of CataloniaBarcelona, [e-mail]

^d Department of Automatic Control and Computer EngineeringTechnical University of CataloniaBarcelona, [e-mail]

ABSTRACT. The tracking of a periodic signal by the DC-to-DC converter is studied in this paper. The special case of a full bridge boost converter is considered. The boost converter is a nonminimum phase system which is difficult to control. A disturbed load resistance parameter has been taken into account. Furthermore, the periodic signals may be tracked by the output voltage taking into account a number of appropriate restrictive conditions. Semi-infinite optimization techniques are used to solve the constrained power loss minimization problem.

KEYWORDS: DC-to-DC, boost converter, sliding control, tracking, optimization

1. Introduction

Switched mode DC-DC power converters are used in a wide range of power supply systems. Sliding control allows the tracking of a periodic sine output wave in a boost converter which is a nonminimum phase system, i.e., the system has unstable ...