研究目的
To analyze and compare the performance of four MPPT algorithms (P&O, INC, SGESC, and FLC) under varying irradiation levels in terms of tracking efficiency and convergence rate for a 10.2 kW PV array.
研究成果
The FLC-based MPPT controller was found to be the most efficient, tracking the maximum power point rapidly with minimal oscillations under varying irradiation levels. While P&O is simpler, it exhibits oscillations, and INC has slower response times. SGESC shows reduced oscillations but is complex. The findings suggest FLC as the preferred method for applications requiring fast and accurate MPPT in PV systems.
研究不足
The study is based on simulation only, without experimental validation on physical systems. It assumes ideal conditions and does not account for real-world factors like partial shading, temperature variations beyond the simulated range, or hardware imperfections. The algorithms' performance might differ in practical applications due to noise and component tolerances.
1：Experimental Design and Method Selection:
A simulation model was developed in MATLAB/SIMULINK to compare perturb and observe (P&O), incremental conductance (INC), scalar gradient extremum seeking control (SGESC), and fuzzy logic controller (FLC) based MPPT algorithms. The design rationale was to evaluate their efficiency and response time under changing solar irradiation.
2：Sample Selection and Data Sources:
A 10.2 kW PV array was simulated using parameters from the KC200GT solar PV module. Varying irradiation levels (1000, 800, and 500 W/m2) were applied as inputs to the PV model.
3：2 kW PV array was simulated using parameters from the KC200GT solar PV module. Varying irradiation levels (1000, 800, and 500 W/m2) were applied as inputs to the PV model.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: The simulation utilized a boost DC-DC converter with specified inductance (3.636 mH), DC link capacitance (10000 μF), and nominal DC bus voltage (500 V). No physical equipment was used; it was entirely simulation-based.
4：636 mH), DC link capacitance (10000 μF), and nominal DC bus voltage (500 V). No physical equipment was used; it was entirely simulation-based.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The PV array model was implemented using single-diode equivalent equations. Each MPPT algorithm was simulated with specific parameters (e.g., step size of 0.01 for P&O and INC, frequencies for SGESC filters). The irradiation was varied over time intervals, and output power, voltage, current, and duty cycle were monitored.
5：01 for P&O and INC, frequencies for SGESC filters). The irradiation was varied over time intervals, and output power, voltage, current, and duty cycle were monitored.
Data Analysis Methods:
5. Data Analysis Methods: Results were analyzed by comparing tracked power values, tracking time, and efficiency. Data were processed within MATLAB/SIMULINK, with efficiency calculated as the ratio of tracked power to maximum possible power from P-V characteristics.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
