Design and performance comparison of LQR Nonzero Set Point, Sliding Mode, and Current Mode digital controllers for Cuk converter

Author

Shadmand, Mohammad B. ; Shirkhani, Arsham S. ; Pasupuleti, Murali

Author_Institution

Dept. of Electr. & Comput. Eng., Texas A&M Univ., College Station, TX, USA

fYear

2013

fDate

8-11 July 2013

Firstpage

1

Lastpage

6

Abstract

This paper performs the evaluation and comparison of performance after a load change of three control strategies-LQR Nonzero Set point (NZSP), Sliding Mode and Current Mode control for Cuk converter with non-idealities in components. The application consists of driving the contrast pins of an LCD based screens, requiring 50 Watts power delivered to the load. The Cuk converter with a variable input is employed to maintain the uniform output current and voltage through its operation of driving the contrast pins. State space averaging is used to model the system. All the controllers are implemented and compared against the settling time, efficiency to evaluate the best control strategy for the selected application.

Keywords

DC-DC power convertors; current-mode circuits; digital control; driver circuits; linear quadratic control; state-space methods; variable structure systems; Cuk converter; LCD based screens; LQR controllers; contrast pins; current mode digital controllers; load change; nonzero set point controllers; power 50 W; sliding mode controllers; state space averaging; uniform output current; Aerospace electronics; Capacitors; Inductors; Steady-state; Switches; Voltage control; Cuk Converter; Current Mode Controller; Digital Controllers; LQR Controller; Sliding Mode Controller;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics for Distributed Generation Systems (PEDG), 2013 4th IEEE International Symposium on

Conference_Location

Rogers, AR

Type

conf

DOI

10.1109/PEDG.2013.6785633

Filename

6785633