研究目的
To propose a novel method for Maximum Power Point Tracking (MPPT) in photovoltaic systems under uncertainty using Interval Type-2 Fuzzy Logic System (IT2FLS) and Taguchi method for robust design.
研究成果
The proposed robust design of an optimal interval type-2 fuzzy logic system effectively realizes MPPT under varying insolation and temperature conditions. The Taguchi method significantly reduces the number of experiments while considering critical and independent scenarios. The study demonstrates that the proposed method outperforms traditional methods in terms of power output and efficiency, and it is more robust against uncertainties associated with ever-changing insolation and temperature.
研究不足
The study focuses on a standalone PV system with specific levels of solar irradiation and temperature. The applicability of the proposed method to grid-connected systems or under different environmental conditions is not explored.
1:Experimental Design and Method Selection:
The study employs an IT2FLS to tune the duty cycle of a DC/DC converter, with control gains and IT2 membership functions optimized using an approximate gradient-descent algorithm. Taguchi’s orthogonal scenarios are used to evaluate PV power generations under different meteorological conditions.
2:Sample Selection and Data Sources:
The study considers various levels of solar irradiation (400, 700, and 1000 W/m2) and temperatures (10°C, 25°C, and 40°C) to develop scenarios.
3:List of Experimental Equipment and Materials:
The experimental setup includes a PV system with a boost converter and load, a real-time simulator OPAL-RT (OP5600), and a TI DSP Chip (eZdsp TMS320F28335).
4:5).
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The proposed method is implemented using a DSP Chip-in-the-Loop (DIL) simulation. The control gains and parameters of the IT2 membership function are tuned for each scenario, and an analysis of the mean (ANOM) of the signal-to-noise ratio is performed.
5:Data Analysis Methods:
The performance index 'Signal-to-Noise Ratio' (SNR) is used to evaluate the power generation under various scenarios. The main effect of each factor on the SNR is analyzed to achieve the robust design.
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