Maximum Power Point Tracking for photovoltaic systemapplied to DC/DC/AC inverter based on Modular Multi‑level Converter structure

Nowadays, solar power is a potential alternative energy source. To get the best maximum power from solar power, it is necessary to have a strong enough inverter structure and a good control algorithm. This paper presents the Maximum Power Point Tracking (MPPT) algorithm of a solar PV system applied...

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Bibliographic Details
Published inArchives of Electrical Engineering (Online) Vol. 74; no. 2; pp. 425 - 445
Main Authors Cuong, Tran Hung, Thu Anh, An Thi Hoai
Format Journal Article
LanguageEnglish
Polish
Published Warsaw Polish Academy of Sciences 01.04.2025
Subjects
Algorithms
Alternating current
Capacitors
Closed loops
Control algorithms
Control theory
Electric potential
Harmonic distortion
Incremental conductance
Inverters
Maximum power tracking
Modular structures
Modulation
Photovoltaic cells
Power control
Solar energy
Voltage
Weather
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ISSN1427-4221
2300-2506
2300-2506
DOI10.24425/aee.2025.153907

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Summary:Nowadays, solar power is a potential alternative energy source. To get the best maximum power from solar power, it is necessary to have a strong enough inverter structure and a good control algorithm. This paper presents the Maximum Power Point Tracking (MPPT) algorithm of a solar PV system applied to a DC/DC/AC inverter to obtain maximum power, in which the DC/DC rectifier uses a Boost Converter and the DC/AC inverter uses a Modular Multilevel Converter (MMC). The purpose is to convert electricity from the grid-connected PV system. The MPPT algorithm uses the Incremental Conductance – Integral Regulator (INC-IR) method to find the maximum power point quickly and accurately in different weather conditions. The operation of an MMC uses the Nearest Level Modulation (NLM) method combined with a capacitor voltage balance algorithm to generate maximum AC voltage levels and control the capacitor voltage balance in the MMC. The Nearest Level Modulation method has the advantage of providing a very low valve switching frequency to increase the lifetime of the semiconductor valve. A closed-loop circuit with the PI controller performs the grid-connected power control process. This control and modulation process will produce sinusoidal alternating current (AC) and voltage with a sound total harmonic distortion (THD) index. The simulation of the system will be performed on MATLAB/Simulink software to demonstrate the performance of the proposed method and applied to a 21-level MMC
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ISSN:1427-4221
2300-2506
2300-2506
DOI:10.24425/aee.2025.153907