ABSTRACT:
The demand for power supply and depletion of the
conventional energy sources are increasing drastically. So to overcome this
problem, the best alternative power generation for conventional fossil fuel is
Photovoltaic solar cell based system
because of its advantage of pollution free and its availability in abundance
with free of cost. In the MPPT based PV system the converters are the most
sensitive part. Therefore to provide uninterrupted power supply without compromising
the quality of power, reliability evaluation of interleaved boost converter
becomes necessary. MATLAB/Simulink is used for the simulation studies and to determine
the power losses of various components of the converter which is used in
calculating the failure rates and reliability of the interleaved boost
converter. Reliability studies of IBC have not been studied much. However there
exists few literature in which reliability expression has been developed using
Markov technique which is a more complex method as compare to Reliability Block
Diagram (RBD). Therefore this paper proposes reliability modeling and
reliability evaluation of Interleaved boost converter in MPPT based
photo-voltaic system by using simple RBD method.
KEYWORDS:
1.
Maximum Power Point Tracking (MPPT)
2.
Photovoltaic systems
3.
Reliability
4.
Failure rate
5.
Reliability Block diagram(RBD)
6.
Interleaved Boost Converter (IBC)
SOFTWARE:
MATLAB/SIMULINK
CONCLUSION:
The
modeling of Interleaved boost converter is discussed stepwise along with its
simulation results with the help of MATLAB/SIMULINK. The failure rates of each
component of IBC and the whole IBC are determined. The RBD model is developed
for a conventional boost converter and IBC and those are a series system and a
parallel system respectively. With the help of this RBD the overall reliability
evaluation and MTTF calculation are done for the IBC used in grid connected PV
system. The interleaved boost converter acts as a power converter and MPP
tracker as well because of its high reliable nature. The reliability evaluation
can be done for the other topologies of these converters which are implemented
in various other power generation system.
REFERENCES:
[1]
TRISHAN ESRAM AND PATRICK L. CHAPMAN, “COMPARISON OF Photovoltaic Array Maximum
Power Point Techniques”, IEEE Transactions on Energy Conversion, Vol.22,
No.2, June, 2007.
[2]
A. E. Khosroshahi, M. Abapour, and M. Sabahi, “Reliability evaluation of
conventional and interleaved DC-DC boost converters,” IEEE Trans. Power
Electron., vol. 30, no. 10, pp. 5821-5828, Oct. 2015.
[3]
M.H. Taghvaee, M.A.M. Radzi, S.M. Moosavain, H. Hizam, and M.H. Marhaban, “A
current and future study on non-isolated DC-DC converters for photovoltaic
applications,” Renew. and Sustain. Energy, vol. 17, pp. 216-227, 2013.
[4]
D. Sera, R. Teodorescu, and P. Rodriguez, “PV panel model based on datasheet
values,” In Proc .IEEE. ISIE, pp. 2392-2398, Jun. 2007.
[5]
M. G. Villalva, J. R. Gazoli, and E. R. Filho, “Comprehensive Approach to
Modeling and Simulation of Photovoltaic Arrays,” IEEE Trans. Power
Electron., vol. 24, no. 5, May. 2009.
