研究目的
Investigating a PV system formed by the combination of a multilevel boost converter and a neutral point clamped inverter operating under partial shading, with a focus on maximum power point tracking using Fibonacci search.
研究成果
The combination of a multilevel boost converter and a neutral point clamped inverter with Fibonacci search-based MPPT effectively operates under partial shading conditions. The system demonstrates good performance in tracking the global maximum power point, with self-balanced capacitor voltages in the MBC.
研究不足
The study focuses on a specific configuration of PV panels and converters, and the effectiveness of the Fibonacci search MPPT under partial shading conditions. The scalability to larger systems and different shading patterns is not explored.
1：Experimental Design and Method Selection:
The study combines a multilevel boost converter (MBC) with a neutral point clamped (NPC) inverter for PV systems under partial shading. It employs Fibonacci search for MPPT and a current control scheme for the boost converter.
2：Sample Selection and Data Sources:
Two PV panels in series are used, with simulations and experimental setups to validate the theoretical studies.
3：List of Experimental Equipment and Materials:
Includes PV panels, MBC with specific components, NPC inverter, and a Digital Signal Processor (DSP) for control signals.
4：Experimental Procedures and Operational Workflow:
The system is tested under four shading scenarios, with simulation and experimental validation of the MPPT algorithm and system performance.
5：Data Analysis Methods:
MATLAB?/Simulink? for simulation; experimental results are compared with simulations to validate the theoretical studies.
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