研究目的
To propose a new multi-source and Hybrid Energy Storage (HES) integrated converter configuration for DC microgrid applications that effectively handles power fluctuations due to wind, photovoltaic, and sudden load disturbances, with the aim of increasing the lifetime of battery storage and reducing the sizing of the storage unit.
研究成果
The proposed multi-source converter configuration effectively interfaces PV, wind, and a battery-supercapacitor based Hybrid Energy Storage for DC microgrid applications. The system demonstrates satisfactory performance in operating renewable sources at Maximum Power Point and managing energy storage based on power availability. The configuration offers advantages such as fewer switches, inherent voltage boosting, and reduced sensors, making it a viable solution for DC microgrid applications.
研究不足
The limitation of the proposed configuration is that dc-link voltage cannot be tightly regulated when PV is present, although the voltage variation is within the permissible range.
1：Experimental Design and Method Selection:
The study involves the design of a multi-source converter configuration integrating PV, wind, and a supercapacitor-battery based HES. The methodology includes theoretical modeling, control structure design, and simulation and experimental validation.
2：Sample Selection and Data Sources:
The system parameters for simulation and experimental study are detailed, including specifications for PV source, battery pack, supercapacitor pack, wind source parameters, converter parameters, and load parameters.
3：List of Experimental Equipment and Materials:
Includes TerraSAS Photovoltaic Simulator (ETS150), Maxwell supercapacitors (BMOD0058 E016 B02), Exide MRED32R Batteries, SKM100GB063D IGBT based dc-dc converters, linear loads, Keysight dc source, and dSPACE-1104 as a real-time digital controller.
4：Experimental Procedures and Operational Workflow:
The experimental setup involves creating disturbances in PV, wind, and load to evaluate system performance under various operating conditions.
5：Data Analysis Methods:
The performance of the proposed system is verified through simulation and experimental results under various cases, with parameters like dc-link voltage, inductor current, battery current, PV current, wind current, and supercapacitor current being monitored.
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