研究目的
To propose an analytical method to evaluate the system with IDCCM for different shading pattern/intensity, irradiance, and temperature, and to validate the analysis through experimental test-rig.
研究成果
The IDCCM improves energy yield when the PV system is subjected to certain shading patterns over several hours of operation. However, its superiority cannot be generalised due to continuous internal power losses in the absence of partial shading and the inability of the central inverter to track the global peak correctly under partial shading. The proposed analytical method provides a good estimation of the system performance with IDCCM.
研究不足
The IDCCM is ineffective at high shading intensity and experiences continuous power losses due to its internal operations when shading is absent. The performance of the IDCCM varies for different shading conditions and depends on the peak tracking capability of the central inverter.
1：Experimental Design and Method Selection:
The study involves the development of a simulation model of the PV system using the two-diode model and Matlab/Simulink tools for analysis under partial shading conditions.
2：Sample Selection and Data Sources:
A 2?kWp experimental test-rig is set up with SPV 1020 boost-type IDCCM devices. The performance is benchmarked against the conventional system that utilises bypass diodes.
3：List of Experimental Equipment and Materials:
SPV 1020 IDCCM devices, Solar World SW 250 modules, PM6000 power analyser from Voltech Instruments, CMP11 pyranometer from Campbel Scientific, PT 100 thermocouple.
4：Experimental Procedures and Operational Workflow:
The system is subjected to different shading patterns and intensities, and the performance is measured and compared.
5：Data Analysis Methods:
The output power computation is based on their corresponding P–V curves, and the energy yield is calculated and compared.
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