Simple adaptive fuzzy logic controller for three-phase PWM Boost Rectifiers

Rolando P. Burgos, Eduardo P. Wiechmann, Jose R. Rodriguez

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Citations (Scopus)


Fuzzy logic Controllers (FC) have been implemented and studied on various types of static power converters. However, their improvement in converters' performance is not clear compared to classical control theory controllers. This is especially true in systems where precise models exist, such as in the PWM Boost Rectifier (PWM-BR). Another use of FC has been to tune and adapt controllers synthesized by classical control theory, where they have achieved good results. This paper takes advantage of these trends and proposes a simple Adaptive Fuzzy Controller (AFC) which offers an improved dynamic response when compared to conventional FC. The AFC adaptive nature is achieved by modifying its normalizing factors and gains, and by using an inner loop which adapts the output normalizing gain. Thus, the AFC is capable of reducing the PWM-BR overvoltage and settling time by 75% and 90% compared to a conventional FC. Consequently improving the switches' voltage utilization factor by 11.3%. The converter's fast response is attained by using a space vectors modulation which also improves the converter's voltage utilization by presenting a unity ac-dc gain. The paper presents a complete analysis and design procedure of the AFC and PWM-BR system, together with an extensive evaluation under transient conditions. All these show the feasibility of the proposed control scheme.

Original languageEnglish
Title of host publicationIEEE International Symposium on Industrial Electronics
Editors Anon
Number of pages6
Publication statusPublished - 1998
EventProceedings of the 1998 International Symposium on Industrial Electronics, ISIE. Part 1 (of 2) - Pretoria, S Afr
Duration: 7 Jul 199810 Jul 1998


OtherProceedings of the 1998 International Symposium on Industrial Electronics, ISIE. Part 1 (of 2)
CityPretoria, S Afr

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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