|Modeling and analysis of Grid-Connected Multilevel PV Inverter with Distributed MPPT Techniques|
|B Yella Reddy, Bingi Gangadhar Yadav|
|Cite This Article:|
Modeling and analysis of Grid-Connected Multilevel PV Inverter with Distributed MPPT Techniques, International Journal of Innovative Research in Technology(www.ijirt.org) ,ISSN: 2349-6002 ,Volume 6 ,Issue 3 ,Page(s):7-14 ,July 2019 ,Available :IJIRT148536_PAPER.pdf
|Cascaded multilevel inverter, distributed maxi- mum power point (MPP) tracking (MPPT), modular, modulation compensation, photovoltaic (PV).|
|This paper presents a modular cascaded H-bridge multilevel photovoltaic (PV) inverter for single- or three-phase grid-connected applications. The modular cascaded multilevel topology helps to improve the efficiency and flexibility of PV systems. To realize better utilization of PV modules and maximize the solar energy extraction, a distributed maximum power point tracking control scheme is applied to both single- and three-phase multilevel inverters, which allows independent control of each dc-link voltage. For three-phase grid-connected applications, PV mismatches may introduce unbalanced supplied power, leading to unbalanced grid current. To solve this issue, a control scheme with modulation compensation is also proposed. An experimental three-phase seven-level cascaded H-bridge inverter has been built utilizing nine H-bridge modules (three modules per phase). Each H-bridge module is connected to a 185-W solar panel. Simulation and experimental results are presented to verify the feasibility of the proposed approach.|
|Unique Paper ID: 148536|
Publication Volume & Issue: Volume 6, Issue 3
Page(s): 7 - 14
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