Title :
Systematic approach to robust nonlinear voltage control of buck/boost converter
Author :
Sasaki, Seigo ; Inoue, Tadashi
Author_Institution :
Dept. of Electron. Eng., Nat. Defense Acad., Yokosuka, Japan
Abstract :
Nonlinear state feedback controllers are systematically derived to achieve output voltage control of a buck/boost converter behind variations of input voltage and resistive load. The controller design is carried out on the basis of a state averaged model of the converter, which is a bilinear system. The control problems are treated as nonlinear H∞ state feedback control problems for the bilinear system, and are solved via the Lyapunov-based game theory approach. Convex programming technique gives concrete controllers solving the problems via considering a domain of voltage and current in the converter circuit. Computer simulations show efficiency of the control system and the control system design approach
Keywords :
DC-DC power convertors; H∞ control; Lyapunov methods; convex programming; nonlinear control systems; robust control; state feedback; voltage control; Lyapunov-based game theory; bilinear system; buck/boost converter; computer simulations; converter circuit; convex programming technique; input voltage; nonlinear H∞ state feedback control; nonlinear state feedback controllers; resistive load; robust nonlinear voltage control; state averaged model; Circuits; Concrete; Control system synthesis; Control systems; Game theory; Nonlinear control systems; Nonlinear systems; Robust control; State feedback; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual
Conference_Location :
Galway
Print_ISBN :
0-7803-5692-6
DOI :
10.1109/PESC.2000.880514
