Open AccessStudy of novel parallel H-bridge and common-emitter current-source inverters for photovoltaic power conversion system
Author(s) -
Suroso Suroso,
Hari Siswantoro
Publication year - 2022
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.v13.i1.pp500-508
Subject(s) - photovoltaic system , total harmonic distortion , power factor , inverter , h bridge , electrical engineering , waveform , common emitter , power (physics) , current source , maximum power point tracking , volt ampere , harmonics , maximum power principle , computer science , control theory (sociology) , current (fluid) , engineering , constant power circuit , voltage , physics , control (management) , quantum mechanics , artificial intelligence
A novel operation of three-level H-bridge and common-emitter current source inverters (CSIs) proposed for photovoltaic power converters is presented in this paper. Two photovoltaic systems with two different inverter circuits, i.e. H-bridge and common-emitter CSIs, were connected in parallel to supply a sharing ac power load. In order to regulate the power supplied by each inverter system, proportional integral current controllers were employed. Triangular carrier and sinusoidal signals-based modulation techniques were implemented to both inverters. Some parameters such as load current, inverter’s output current, total harmonics distortion (THD), and efficiency were tested and analyzed. Test results showed that in the parallel operation of these inverters, the average THD percentage of the load current was 0.34% for load power factor 0.996 and 0.62 % for load power factor 0.782. Minimum waveform distortion of inverter ac currents during parallel operation can be achieved if the current magnitudes of both inverters were set the same. In the case of efficiency, the maximum efficiency of the system was 89.07%. Operating the H-bridge CSI with a higher magnitude of the output current will result in higher efficiency of the system.