Search documents

Browse topics

Document details

Application of Ultracapacitors in Autonomous PV Systems
W. Grzesiak, T. Maj, E. Klugmann-Radziemska
Capacitance, Stand-Alone PV System, Ultracapacitors
Components for PV Systems
Subtopic: Balance of System Components
Event: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain
Session: 4AV.3.59
2957 - 2960
ISBN: 3-936338-24-8
Paper DOI: 10.4229/23rdEUPVSEC2008-4AV.3.59
0,00 EUR
Document(s): paper


Ultracapacitors, (called also supercapacitors, double-layer capacitors, gold capacitors and power capacitors) present a novelty in the DC power engineering, especially in the sphere of energy storing up and restoring process. Featuring general parameters similar to those of storage batteries – they single out by an ability of fast charging with high current values, as well as by fast discharging, while high power and current levels are offered. Moreover, the ultracapacitors are featured by a much higher attainable number of charging and discharging cycles (reaching one million value) in comparison with common storage batteries. Besides, they are manufactured of materials of little toxicity. Considering that a single ultracapacitor features a very low working voltage at an enormous capacity as well – indispensable is the solely series ultracapacitors’ connection to build a battery of the desired working voltage. Such a connection must be accompanied by proper technical means in form of an outfit of electronic units serving as inspection of the impassable permissible voltage on individual capacitors, creating the entire battery. In its introduction the presented paper discusses the structure, characteristics and features of ultracapacitors. Their capacitance’s measurement results, a realized ultracapacitor battery project (6x3000 F/2,7V) as well as the accompanying electric and electronic safety units’ design will be presented. Particularly the discussed batteries’ application in the technical region of gaining and storing the photovoltaic energy instead of using the classic storage batteries will be considered. A preliminary technical and economical comparative analysis of both battery types will be presented.