Use of renewable energy and in particular solar energy has brought significant attention over the past decades. Photovoltaic (PV) power generation projects are implemented in very large number in many countries. Many research works are carried out to analyze and validate the performance of PV modules. Implementation of experimental set up for PV based power system with DC-DC converter to validate the performance of the system is not always possible due to practical constraints. Software based simulation model helps to analyze the performance of PV and a common circuit based model which could be used for validating any commercial PV module will be more helpful. Simulation of mathematical model for Photovoltaic (PV) module and DC-DC boost converter is presented in this paper. The model presented in this paper can be used as a generalized PV module to analyze the performance of any commercially available PV modules. I-V characteristics and P-V characteristics of PV module under different temperature and irradiation level can be obtained using the model. The design of DC-DC boost converter is also discussed in detail. Simulation of DC-DC converter is performed and the results are obtained from constant DC supply fed converter and PV fed converter.
- DC-DC Boost converter
- Solar power
Fig. 1 Simulink Model of proposed system
EXPECTED SIMULATION RESULTS:
Fig.2 PWM Pulse generation
Fig. 3(a) Input Voltage of DC-DC Boost Converter
Fig. 4(b) Output Voltage of Boost Converter constant DC input supply
Fig. 5 (c) Output current of Boost Converter constant DC input supply
Fig. 6 (a) Input voltage of PV fed converter
Fig. 7 (b) Output voltage and current waveform of PV fed converter
Fig. 8. Change in irradiation level of PV Module
Fig. 9. Output Voltage and Current waveforms of Boost Converter at
different irradiation level.
A circuit based system model of PV modules helps to analyze the performance of commercial PV modules. A general model of PV module is developed using commonly used blocks in the form of masked subsystem block. I-V and P-V characteristics outputs are generated for MSX 60 PV module under different irradiation and different temperature levels and the model is simulated for GEPVp-200-M Module under various conditions as presented in the data sheet. The results obtained from the simulation shows excellent matching with the characteristics graphs provided in the data sheet of the selected models. Thus, the model can be used to analyze the performance of any commercial PV module. The DC-DC boost converter is also simulated and the results are obtained from the converter with constant DC input supply and by interconnecting the PV module with it. The results shows close match between the output of converter with constant DC input and the PV fed converter. The output voltage and current of the PV fed DC-DC boost converter obtained for change of irradiation levels at constant temperature is also presented.
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