ABSTRACT:
This paper presents a new concept of module integrated
converters called PV balancers for photovoltaic applications. The proposed
concept enables independent maximum power point tracking (MPPT) for each
module, and dramatically decreases the requirements for power converters. The
power rating of a PV balancer is less than 20% of its counterparts, and the
manufacturing cost is thus significantly reduced. In this paper, two
architectures of PV balancers are proposed, analyzed, realized, and verified
through simulation and experimental results. It is anticipated that the
proposed approach will be a low-cost solution for future photovoltaic power
systems.
SOFTWARE: MATLAB/SIMULINK
BLOCK DIAGRAM:
(a)
Architecture I of PV balancers
(b)
Architecture II of PV balancers
Figure
1. Two possible architectures of PV balancers
EXPECTED SIMULATION RESULTS:
Figure
2. Output voltages of PV balancers in Architecture I
Figure
3. Output voltages of PV balancers in Architecture II
CONCLUSION:
A
new concept of module-integrated converters called PV balancers has been proposed
and verified in this paper. The proposed concept enables independent maximum
power point tracking (MPPT) for each module, and dramatically decreases the
requirements for power converters. PV balancers may have a significant economic
value for photovoltaic systems in the future. Future work will be focused on
power converter optimization, dc bus voltage control, and developing a highly
efficient inverter for PV balancers.
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