研究目的
To propose an improved H-bridge multilevel inverter for grid integration of photovoltaic power conversion systems, enhancing power quality through balanced active power sharing, bidirectional power flow, and multifunctional objectives including reactive power support and load harmonic mitigation.
研究成果
The proposed modified H-bridge multilevel inverter efficiently integrates photovoltaic power conversion systems with the grid, improving power quality through balanced active power sharing, reactive power support, and load harmonic mitigation. The system demonstrates high efficiency and compliance with IEEE-519 standards, making it suitable for grid-connected photovoltaic applications.
研究不足
The study does not address the performance of the MPPT under uneven insolation conditions and the system's response to grid side and load side disturbances, which are under progress in the laboratory.
1：Experimental Design and Method Selection:
The system is designed with a modified H-bridge multilevel inverter for grid-connected photovoltaic power conversion systems, utilizing incremental conductance (IC) algorithm for maximum power point tracking (MPPT).
2：Sample Selection and Data Sources:
Solar panel simulator used as input for the hardware setup.
3：List of Experimental Equipment and Materials:
IGBT switch SKM75GB12T4, dSPACE 1104 controller, Fluke 43B for measurement, and MATLAB/Simulink for simulation.
4：Experimental Procedures and Operational Workflow:
The system is simulated in MATLAB/Simulink, and a laboratory prototype is developed. The hardware testing includes measuring output waveforms, harmonics, and power using Fluke 43B.
5：3B.
Data Analysis Methods:
5. Data Analysis Methods: The performance is evaluated through simulation and experimental results, focusing on power quality, efficiency, and harmonic mitigation.
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