Open AccessFuzzy-Logic Method And Sliding-Mode Control For Induction Motor 424 Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP) © Copyright: All rights reserved. Retrieval Number: F11190886S219/2019©BEIESP DOI:10.35940/ijeat.F1119.0886S219 Journal Website: www.ijeat.org Figure 1. Block diagram of conventional DTC (CDTC) Figure2. Control principle of conventional DTC B. DTC Using Switching Table The fundamental idea behind the DTC concept is to achieve decoupled
Author(s) -
S. Revathi,
M. Jasmine,
S. Philomina
Publication year - 2019
Publication title -
international journal of engineering and advanced technology
Language(s) - English
Resource type - Journals
ISSN - 2249-8958
DOI - 10.35940/ijeat.f1119.0886s219
Subject(s) - control theory (sociology) , direct torque control , torque ripple , stator , induction motor , vector control , torque , fuzzy logic , computer science , inverter , control engineering , engineering , noise (video) , steady state (chemistry) , control (management) , voltage , artificial intelligence , physics , electrical engineering , chemistry , image (mathematics) , thermodynamics
Direct torque control (DTC) is known to generate fast and robust control for induction motor drives. Even though, in classical DTC, there exists a notable ripple in torque and flux during steady state, which can be reflected towards the speed response and generating undesirable acoustic noise. This paper introduces two approaches based on variable structure control (VSC) and fuzzy logic control (FLC) to mitigate steady state chattering problem while preserving the merits of DTC operation. The inverter is controlled directly on the basis of stator flux and the torque errors, by selecting most appropriate voltage vector from switching logic table. A comparative study is performed for the three control topologies including conventional DTC and simulation results are presented and discussed. It is concluded that SMC and intelligent control based technique provide better characteristics in steady state operation with regards to the conventional DTC