Power Balancing with Zero Sequence Voltage Injection Method for Cascaded H-Bridge Inverter Fed Grid-Connected PV System

Tanguturi, Jitendra; Kumar, Satendra; Keerthipati, Sivakumar

doi:10.1109/isgtasia54193.2022.10003532

Cited by 1 publication

(1 citation statement)

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“…The multilevel inverter outperforms the traditional two‐level inverter in producing AC voltages and currents with reduced harmonic distortion. Many recent papers have focused on multilevel inverter (MLI) topologies, including the flying capacitors inverter, neutral‐point‐clamped inverter [15], cascaded H‐bridge inverter [16], and packed ‘ U ’ cells (PUCs) inverter [17]. PUC is the most commonly used topology in single‐phase applications due to its superior economy compared to other topologies [18].…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of PUC7‐based multifunction single‐phase solar active filter in real outdoor environments: Experimental insights

Khettab,

Kheldoun,

Bradai

et al. 2024

IET Renewable Power Gen

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This paper presents a novel architecture to enhance the performance of grid‐connected photovoltaic (PV) systems through the introduction of several key novelties. Firstly, a packed U‐cell seven‐level (PUC7)‐based single‐phase solar active filter is implemented, offering a comprehensive solution for harmonics mitigation, reactive power compensation, and efficient power extraction from the PV source, while facilitating the injection of real power into the grid. Secondly, the p‐q power injection algorithm is modified to accommodate the extraction of solar power from the PV generator to the grid, simultaneously addressing the need for harmonic current injection to improve power quality. This modification ensures dynamic performance by extracting reference current with harmonic content and solar power information, thereby enhancing the system's overall efficiency. Lastly, the proposed architecture undergoes real outdoor testing, validating its performance in various key aspects including maximum power tracking, reduction of total harmonic distortion in comparison with previous work, operation at unity power factor, and testing the effective operation of the multifunction feature. These contributions collectively demonstrate the effectiveness of the proposed system in enhancing power injection quality and reactive power compensation under real outdoor conditions of PV systems connected to the grid.

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