Modeling and analysis of Grid-Connected Multilevel PV Inverter with Distributed MPPT Techniques

B Yella Reddy; Bingi Gangadhar Yadav

Modeling and analysis of Grid-Connected Multilevel PV Inverter with Distributed MPPT Techniques

Authors: B Yella Reddy, Bingi Gangadhar Yadav

Unique Paper ID: 148536
Volume: 6
Issue: 3
PageNo: 7-14

Keywords: Cascaded multilevel inverter distributed maxi- mum power point (MPP) tracking (MPPT) modular modulation compensation photovoltaic (PV).

Abstract:
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.

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Cite This Article

ISSN: 2349-6002
Volume: 6
Issue: 3
PageNo: 7-14

Modeling and analysis of Grid-Connected Multilevel PV Inverter with Distributed MPPT Techniques

Available:https://ijirt.org/Article?manuscript=148536

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Journal no 47859

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