Implementation of a DC-DC converter with variable structure control of switched systems

• Main Author: Cardim, Rodrigo [UNESP]
• Publication Date: 2011
• Other Authors: Teixeira, Marcelo C.M. [UNESP], Assunção, Edvaldo [UNESP], Covacic, Márcio R., De Seixas, Falcondes J.M. [UNESP], Faria, Flávio A. [UNESP], Mainardi Júnior, Edson I. [UNESP]
• Format: Conference object
• Language: eng
• Source: Repositório Institucional da UNESP
• Download full: http://dx.doi.org/10.1109/IEMDC.2011.5994929; http://hdl.handle.net/11449/72675
• topic: DC-DC Converters; LMIs; Lyapunov-Metzler inequalities; Strictly Positive Real Systems; Switched Systems; Variable Structure Control; Strictly positive real; Switched system; Variable structures; Continuous time systems; Controllers; Design; Electric machinery; Electric vehicles; Flight control systems; Fracture mechanics; Hardware; HVDC power transmission; Industrial applications; Robust control; Spatial variables control; SPICE; State feedback; Switching systems; Variable structure control; DC-DC converters

This paper presents a control method for a class of continuous-time switched systems, using state feedback variable structure controllers. The method is applied to the control of a two-cell dc-dc buck converter and a control circuit design using the software PSpice is proposed. The design is based on Lyapunov-Metzler-SPR systems and the performance of the resulting control system is superior to that afforded by a recently-proposed alternative sliding-mode control technique. The dc-dc power converters are very used in industrial applications, for instance, in power systems of hybrid electric vehicles and aircrafts. Good results were obtained and the proposed design is also inexpensive because it uses electric components that can be easily found for the hardware implementation. Future researches on the subject include the hardware validation of the dc-dc converter controller and the robust control design of switched systems, with structural failures. © 2011 IEEE.