研究目的
To design an optimal hybrid neuro-fuzzy/fuzzy controller for a photovoltaic lead-acid battery charging system that improves tracking accuracy and reduces complexity through the use of multi-objective genetic algorithm (MOGA) and genetic algorithm (GA).
研究成果
The optimal hybrid SNFC/SFLC-based MPPT and VR approaches derived from MOGA and GA significantly improve the performance of PV battery charging systems. The proposed controller outperforms existing controllers in terms of transient response, stabilized accuracy, charging time, and energy utilization and charging efficiency, while also reducing computational complexity and increasing reliability.
研究不足
The proposed controller operates less effectively under cloudy weather, and the study does not consider partially shaded conditions with multiple peaks in the power or weather variations of winter and summer solstice.
1:Experimental Design and Method Selection:
The study employs a hybrid neuro-fuzzy/fuzzy controller design based on MPPT technique and voltage regulation for a photovoltaic lead-acid battery charging system. The design includes parameter optimization of NFC and FLC using MOGA and GA.
2:Sample Selection and Data Sources:
A 12 V, 50 Ah LA battery is utilized. PV module specifications at standard test conditions are used, with irradiance and temperature varied to simulate different weather conditions.
3:List of Experimental Equipment and Materials:
Includes a PV module, buck converter, battery, and controllers. The buck converter is designed with a 20-mH inductor and a 1:5-mF capacitor.
4:Experimental Procedures and Operational Workflow:
The controllers are optimized using MOGA and GA, with performance evaluated under rapidly-changing weather conditions based on several criteria including transient response, stabilized accuracy, charging time, and energy utilization and charging efficiency.
5:Data Analysis Methods:
Performance is analyzed based on the sum of absolute error (SAE), energy utilization efficiency, charging efficiency, and computational complexity.
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