研究目的
To study, analyze and implement the autonomous current sharing technique by using two parallel connected Solar Photovoltaic (SPV) systems with maximum power point tracking controller (MPPT) considering cable resistances.
研究成果
The article presents a droop control mechanism in de-rated SPV systems that accurately shares current and works perfectly at different case study scenarios. The system has been executed with various load conditions, showing perfect operation at all conditions. Experimental results reveal equal current sharing to the loads and adequate rest delivered to energy storage systems under all conditions.
研究不足
The study acknowledges the potential instability of the system if the cable’s resistance is changed and aims to compensate for current mismatch due to cable resistance.
1：Experimental Design and Method Selection:
The study involves the use of two parallel connected Solar Photovoltaic (SPV) systems with MPPT controllers, considering cable resistances. The methodology includes controlling the duty cycle of MPPT controllers to minimize current sharing mismatch across the load.
2：Sample Selection and Data Sources:
The experiment uses SPV systems connected to a common load, with data collected under various irradiation and load conditions.
3：List of Experimental Equipment and Materials:
Solar Photovoltaic systems, MPPT controllers, buck converters, cables with resistances, and resistive loads.
4：Experimental Procedures and Operational Workflow:
The experiment involves connecting two buck converters in parallel with the help of cables and feeding to the load, varying the output voltage to observe the variation in the current shared across the load by both converters.
5：Data Analysis Methods:
The analysis includes observing the current sharing across the load under different conditions and verifying the effectiveness of the adaptive gain tuning technique.
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