Open AccessReal time simulation of reduced switch multilevel inverter with PWM switching sequence control
Author(s) -
Kanike Vinod Kumar,
R. Saravana Kumar
Publication year - 2021
Publication title -
international journal of power electronics and drive systems/international journal of electrical and computer engineering
Language(s) - English
Resource type - Journals
eISSN - 2722-2578
pISSN - 2722-256X
DOI - 10.11591/ijpeds.v12.i4.pp2305-2313
Subject(s) - inverter , pulse width modulation , voltage , computer science , matlab , reduction (mathematics) , h bridge , sequence (biology) , total harmonic distortion , modulation (music) , control theory (sociology) , control (management) , electrical engineering , mathematics , engineering , physics , chemistry , geometry , artificial intelligence , acoustics , operating system , biochemistry
Reduction of switch count in symmetrical and asymmetrical reduced switch multilevel inverter designs has been proposed regularly with operation of conventional carrier-based pulse width modulation technique. In this study, a novel structure of symmetrical Hexa shaped model reduced switch seven level output inverter is proposed without any auxiliary switch and H-bridge. Proposed structure offers a smaller number of switch count and voltage sources which results in the cost and complexity reduction of its implementation. To operate the switching sequence of inverter from carrier based APOD, POD and PD methods, suitable logical expression to be realize which gained more prominence. Active utilization of two voltage sources in each mode of operation results in significant reduction of voltage stress across each switch is achieved. A comparative study of proposed MLI with various reduced switch MLIs has been presented. Initially, simulation model implementation has been carried out with MATLAB/Simulink and observed the performance parameters and THD. Simulation results are carried for the comparison of the results obtained in the real time work performed on OPAL-RT 5700 simulator .