Fuzzy based optimal switching angle-PWM controller for 27-level asymmetric multi-level inverter

This work aims to improve the operation of multi-level inverter with reduced switching losses, thereby propose a new structure for an MLI with a reduced component count. A 27-level asymmetric Multi Level Inverter (MLI) with a minimal number of static switches is considered as a test system. The prop...

Full description

Saved in:
Bibliographic Details
Published in:Journal of intelligent & fuzzy systems 2020-01, Vol.39 (6), p.8507-8519
Main Authors: Varghese, Lijo Jacob, Sira Jacob, Suma, Banumathi, S., Ravi, Logesh, Vairavasundaram, Subramaniyaswamy, Jacob Raglend, I.
Format: Article
Language:English
Subjects:
Asymmetry
Comparative studies
Controllers
Fuzzy control
Fuzzy logic
Hardware
Harmonic distortion
Inverters
Optimization
Performance measurement
Prototypes
Switches
Switching
Topology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This work aims to improve the operation of multi-level inverter with reduced switching losses, thereby propose a new structure for an MLI with a reduced component count. A 27-level asymmetric Multi Level Inverter (MLI) with a minimal number of static switches is considered as a test system. The proposed MLI is developed with three input DC sources and thirteen power electronic switches. The hardware prototype is developed for 40 V and 3.5 A output. The control logic is developed in dsPIC30F410 controller. The main objective of this work is to effectively bring down the Total Harmonic Distortion (THD) of the resulting output voltage by analyzing the harmonic spectrum of the proposed MLI configuration with various low frequencies switching techniques and optimizing their switching angles and to choose an appropriate switching state using fuzzy logic controller (FLC). The proposed FLC covers wide range of operating conditions i.e. 10 switching states and variables 9*9 rules to predict the suitable switching angel. The performance metrics of the proposed structure of 27-level MLI has been evaluated upon simulation results and experimental results based on hardware prototype. The comparative study also carried out with the recent MLI topologies.
ISSN:1064-1246
1875-8967
DOI:10.3233/JIFS-189168