Prototype super-capacitor photovoltaic streetlight with xLogic SuperRelay functionality
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Date
Authors
Gouws, Rupert
Van Niekerk, Elizbe
Journal Title
Journal ISSN
Volume Title
Publisher
IRET (Institute of Research in Engineering and Technology)
Abstract
In this paper, the authors present and discuss the
design of a prototype super-capacitor photovoltaic (PV)
streetlight with xLogic SuperRelay (PLC) functionality.
Deep-cycle batteries used in solar electrical systems, generally
have low efficiencies, long charging times, are temperature
sensitive and have a limited amount of charging and
discharging cycles. This paper evaluated the effect of
super-capacitors as an energy source for a PV streetlight in
South Africa. An xLogic SuperRelay (PLC) is used to control
the charging and discharging profiles of the super-capacitors
and deep-cycle batteries. The following three design topologies
are evaluated and presented: 1) deep-cycle batteries as an
energy source, 2) super-capacitors as an energy source, 3)
combination deep-cycle batteries and super-capacitors as an
energy source. The experimental results obtained show that the
deep-cycle batteries provide a constant supply to the load,
while the super-capacitors charge and discharge with a linear
curve. The results show that it is too expensive to replace
deep-cycle batteries with super-capacitors, but a combination
provides the most energy efficient solution
Description
Citation
Gouws, R. & Van Niekerk, E. 2013. Prototype super-capacitor photovoltaic streetlight with xLogic SuperRelay functionality. International journal of emerging trends in electrical and electronics, 7(1):34-39. [http://ijetee.org/]