ABSTRACT:
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.
KEYWORDS:
1.
DC-DC Boost converter
2.
MATLAB/Simulink
3. Modeling
4. Photovoltaic
5. Simulation
6. Solar power
SOFTWARE: MATLAB/SIMULINK
BLOCK
DIAGRAM:
Fig. 1 Simulink Model of proposed system
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.
CONCLUSION:
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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