Analysis of Photovoltaic Array Performance Under Partial Shading Conditions
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Date
2015
Authors
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Publisher
MPUAT, Udaipur
Abstract
Optimal photovoltaic array patterns are developed to reduce losses under partial
shading conditions and the performance of the developed system is investigated
using MATLAB based simulation software. The approached design is a passive
design in which following conclusions are arrived.
1. The OTCT interconnections reduce partial shading losses and smooth the P-V
characteristic, thus avoiding a complicated Maximum Power Point Tracking
(MPPT) algorithm.
2. It reduces the possibility of turning ON bypass diodes; thus, they can be avoided
in some situations. However, the OTCT interconnection increases the
complexity of installation and it may require more labor time. Also, the OTCT
interconnection may require additional wires to interconnect the modules.
3. The proposed design is meant to dynamically reconfigure the photovoltaic array
in real time to reduce partial shading losses. The reconfigurable array reduces
partial shading losses caused by difficult-to-predict sources such as clouds and
snow.
4. It reduces the land and installation requirements in large photovoltaic farms.
However, the reconfigurable array requires switches, sensors and controllers
which add to the installation cost.
Description
Analysis of Photovoltaic Array Performance Under Partial Shading Conditions
Keywords
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Citation
Dhupia and Maherchandani, 2015