Current Sensorless Regulation for Converters via Integral Fuzzy Control

Kuang-Yow LIAN
Hui-Wen TU
Chi-Wang HONG

Publication
IEICE TRANSACTIONS on Electronics   Vol.E90-C    No.2    pp.507-514
Publication Date: 2007/02/01
Online ISSN: 1745-1353
DOI: 10.1093/ietele/e90-c.2.507
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electronic Circuits
Keyword: 
T-S fuzzy system,  observer-based control,  output regulation,  buck converter,  separation principle,  

Full Text: PDF(397.8KB)>>
Buy this Article


Summary: 
In this paper, we propose an integral-type T-S fuzzy control scheme to deal with the regulation problem of buck converters without current sensors. This current sensorless control of converters provides the output voltage to achieve zero steady-state error and is with high robust performance. The stability of the overall closed-loop system is rigorously analyzed by using Lyapunov's method. Based on an appropriate assumption, the separation principle can still succeed in the control problems. Hence, the controller and observer gains can be separately obtained by solving LMIs via Matlab's toolbox. The observer-based controller is realized with Simulink and digital signal processors (DSPs). The simulation and experimental results verify the feasibility of the proposed schemes and show the satisfactory performance for the power converters.