Open AccessExtended switched‐inductor quasi‐Z‐source inverter: Modeling and prototype realization
Author(s) -
Ghodsi Masoud,
Barakati Seyed Masoud,
Wu Bin
Publication year - 2019
Publication title -
international transactions on electrical energy systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 42
ISSN - 2050-7038
DOI - 10.1002/etep.2744
Subject(s) - inverter , inductor , z source inverter , inrush current , modulation index , grid tie inverter , voltage , topology (electrical circuits) , capacitor , control theory (sociology) , electronic engineering , power (physics) , engineering , computer science , maximum power point tracking , electrical engineering , physics , control (management) , artificial intelligence , quantum mechanics , transformer
Summary The Z‐source network idea has opened up a new research area in the power electronics field. In this paper, a new switched‐inductor network, called extended switched‐inductor quasi‐Z‐source inverter (ESL‐qZSI), is proposed. From a topological point of view, the new inverter has an additional inductor and three diodes compared with the switched‐inductor quasi‐Z‐source inverter (SL‐qZSI). The suggested inverter has a DC source ground point, continuous input current, and no start‐up inrush current. This proposed inverter compared with SL‐qZSI in the two investigated scenarios. Scenario 1: the proposed inverter has lesser capacitor voltage stress at the voltage conversion ratio than the voltage stress of SL‐qZSI, which results in lower DC‐link voltage. Scenario 2: the proposed inverter has higher voltage gain with respect to the SL‐qZSI, at the same input source and modulation index. Simulations are carried out using MATLAB/Simulink and compared with experimental ones, to show the validity and effectiveness of the proposed inverter. In order to estimate the losses and efficiency, calculations of power losses and efficiency of the ESL‐qZSI and SL‐ZSI are presented. Simulation and experimental results verify the effectiveness of the proposed inverter.