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Investigation of cascaded multilevel inverter based dynamic voltage restorer using fuzzy control
M.S.V. Praveen Kumar, R. Rakesh, , ,
Published in Institute of Advanced Scientific Research, Inc.
2018
Volume: 10
   
Issue: 4 Special Issue
Pages: 837 - 843
Abstract
The Dynamic Voltage Restorer (DVR) has recently been introduced to protect the sensitive power loads from the detrimental effects of voltage sags/swells and other voltage disturbances. Configurations and control schemes for the DVR varies depending upon the nature and characteristics of the load to be protected. Multiple levels of loads require a completely different approach to the design and control of a suitable DVR owing to the inherent inertia of the Inverters and their capability to withstand short-duration, shallow sags/swells, in addition to its tolerance to phase angle jumps. In this paper a DVR with fast response, simple and efficient controller is proposed for fulfilling the voltage restoration requirements for Multilevel Inverter is presented in this paper. The proposed DVR employs the Fuzzy Logic based feedback controller which utilizes the error signal (the difference between the reference voltage and actual measured load voltage) to control the triggering of the switches of an inverter using a Sinusoidal Pulse Width Modulation (SPWM) scheme. The proposed DVR utilizes the energy from 17 Levelsymmetric multilevel inverter. Modeling and simulation of the proposed DVR are implemented in MATLAB/SIMULINK platform. Simulation results have shown that the proposed DVR was efficient in mitigating balanced, unbalanced, multistage and consecutive sags, as well as swellsrestorer, is presented. © 2018, Institute of Advanced Scientific Research, Inc. All rights reserved.
About the journal
JournalJournal of Advanced Research in Dynamical and Control Systems
PublisherInstitute of Advanced Scientific Research, Inc.
ISSN1943023X