Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Using 'Fuzzy Logic' to Optimize Hybrid Solar/Battery Systems

26.02.2015

Sizing techniques play an essential role in the design of renewable energies for hybrid energy systems, and now, a team of researchers is using a "fuzzy logic" algorithm to determine optimal sizing for hybrid photovoltaic panel/battery systems

How did fuzzy logic help a group of researchers in Tunisia and Algeria create an ideal photovoltaic system that obeys the supply-and-demand principle and its delicate balance?


Chokri BEN SALAH/Control and Energy Management Lab. (CEMLab), Department of Electrical Engineering, National School of Engineers of Sfax, BP. W, 3038, Sfax, Tunisia.

This image shows the fuzzy logic algorithm which reads the consumption energy and the monthly average of daily solar radiation and gives the output of the system which is the PVP surface and the battery capacity.

In the Journal of Renewable & Sustainable Energy, from AIP Publishing, the group describes a new sizing system of a solar array and a battery in a standalone photovoltaic system that is based on fuzzy logic -- a many-valued logic system designed to reason outputs by considering a range of possibilities rather than a simple, binary yes or no, as with classical logic.

"The fuzzy logic system accepts the consumed energy and the monthly average of daily solar radiations as inputs and then outputs photovoltaic panel surfaces and the battery capacity," explained Chokri Ben Salah, a researcher in the Control and Energy Management Lab in the Department of Electrical Engineering at the National School of Engineers of Sfax, as well as an assistant professor at the Higher Institute of Applied Science and Technology of Sousse in Tunisia.

"Our method applies Matlab/Simulink interfaces, which aren't complicated compared with other forms of simulation and model-based design," said Ben Salah. In fact, it's possible to build up a graphic integrated user interface to facilitate the usage of the proposed system. The group verified system performance with different inputs by simulations using calculated outputs.

Their results demonstrated the effectiveness of this approach, Ben Salah added. For example, an expansion-planning model of photovoltaic panels and battery systems for a domestic "smart" house performed well in simulations.

The sizing photovoltaic/battery system provides the capacity of batteries used in the hybrid system and determines the surface of the PVP to be used. Its primary significance is "characterized by its simplicity in the usage and its efficiency in optimizing the cost and losses," they report.

In terms of applications, the system may find use in a number of areas, including domestic dwellings, public buildings and industrial electrical settings, as well as for agricultural water pumping in the field.

What's the next step for the team's work? "An extension of the present system is possible -- such as appending a wind or fuel cell energy source," noted Ben Salah. "Our system can also be improved by adding an electrolyzer system to permit it to convert lost photovoltaic solar energy into hydrogen that can be stored in a special tank and then be used elsewhere."

The article, "New optimally technical sizing procedure of domestic PVP/Battery system," is authored by Chokri Ben Salah, Kheireddine Lamamra and Anis Fatnassi. It appears in the Journal of Renewable and Sustainable Energy on Tuesday, February 24, 2015 (DOI: 10.1063/1.4907923). After that date, it can be accessed at: http://scitation.aip.org/content/aip/journal/jrse/7/1/10.1063/1.4907923

The authors of this paper are affiliated with the National School of Engineers of Sfax (Tunisia), University of Bejaia (Algeria), National School of Engineers of Monastir (Tunisia).

ABOUT THE JOURNAL

The Journal of Renewable and Sustainable Energy is an interdisciplinary, peer-reviewed journal produced by AIP publishing that covers all areas of renewable and sustainable energy-related fields that apply to the physical science and engineering communities. See: http://jrse.aip.org/

Contact Information
Jason Socrates Bardi, AIP
jbardi@aip.org
240-535-4954
@jasonbardi

Jason Socrates Bardi, AIP | newswise

More articles from Power and Electrical Engineering:

nachricht Researchers take next step toward fusion energy
16.11.2017 | Texas A&M University

nachricht Desert solar to fuel centuries of air travel
16.11.2017 | SolarPACES

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

Im Focus: Novel Nano-CT device creates high-resolution 3D-X-rays of tiny velvet worm legs

Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.

During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....

Im Focus: Researchers Develop Data Bus for Quantum Computer

The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.

Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...

Im Focus: Wrinkles give heat a jolt in pillared graphene

Rice University researchers test 3-D carbon nanostructures' thermal transport abilities

Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

NASA detects solar flare pulses at Sun and Earth

17.11.2017 | Physics and Astronomy

NIST scientists discover how to switch liver cancer cell growth from 2-D to 3-D structures

17.11.2017 | Health and Medicine

The importance of biodiversity in forests could increase due to climate change

17.11.2017 | Studies and Analyses

VideoLinks
B2B-VideoLinks
More VideoLinks >>>