Open AccessDesign of a New Duty Cycle Modulation to Improve the Energy Quality of an Insulated Production System
Author(s) -
Clément Kengnou Donfack,
Charles Hubert Kom,
Jean Jacques Mandeng,
Paune Felix
Publication year - 2021
Publication title -
european journal of electrical engineering
Language(s) - English
Resource type - Journals
eISSN - 2116-7109
pISSN - 2103-3641
DOI - 10.18280/ejee.230404
Subject(s) - inverter , duty cycle , pulse width modulation , total harmonic distortion , control theory (sociology) , harmonic , voltage , three phase , modulation (music) , matlab , harmonics , computer science , engineering , control (management) , electrical engineering , physics , quantum mechanics , artificial intelligence , acoustics , operating system
In this article, we propose a new strategy for controlling three-phase inverters of renewable energy sources, based on the Duty Cycle Modulatiom (DCM) control using the Park and Fortescue transformation (DCM-dq-dih). Our goals in setting and using this strategy are, on the one hand, to induce a lower harmonic rate as compared to the SPWM (Sinusoidal Pulse Width Modulation) strategy and on the other hand, this control technique enables the inverter to deliver balanced voltages, be it in the event of load unbalance. Our design is built on the basis of the known mode of DCM control of single-phase inverters. Thus, the control of our three-phase inverter is carried out by three DCM modules whose set-points come from the direct, reverse and homopolar strings reconstructed in a Park landmark. This new strategy was tested on the MATLAB Simulink environment for a load of 160 kW. The test results show a reduced Total Harmonic Distorsion (THD) of 2.7 times compared to the THD produced by the SPWM control strategy. In addition, regulation of the symmetrical components during load unbalance is ensured so that the inverter always delivers constant and balanced voltages.