Title :
Small-signal analysis and simulation of fuzzy controlled buck converter
Author :
Chen, Lezhu ; Xu, Yanxia ; Liu, Yan-Fei ; Jin, Rencai
Author_Institution :
Key Lab. of Power Electron. & Motion Control, Anhui Univ. of Technol., China
Abstract :
In this paper, a fuzzy control method is introduced for Buck converter and a Proportional-Differential (PD) like fuzzy controller is designed. The nonlinear characteristics of the PD like fuzzy controller in small-signal range are analyzed. The analysis shows that the PD like fuzzy controller is equivalent to a modified PD controller which provides an additional correction action. The PD like fuzzy controller can provide faster correction than the conventional PD controller. Therefore, the dynamic performance of the closed loop system could be improved. The simulation under fuzzy control is compared with the simulation under Voltage Mode Control, using Matlab/Simulink. The simulation results demonstrate that fuzzy control has superior performance as compared with Voltage Mode Control.
Keywords :
PD control; fuzzy control; power convertors; fuzzy control method; fuzzy controlled buck converter; proportional-differential; small-signal analysis; Analytical models; Automatic control; Buck converters; Computational modeling; Control systems; DC-DC power converters; Error correction; Fuzzy control; PD control; Voltage control;
Conference_Titel :
Industrial Electronics and Applications, 2009. ICIEA 2009. 4th IEEE Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-2799-4
Electronic_ISBN :
978-1-4244-2800-7
DOI :
10.1109/ICIEA.2009.5138316
