Photovoltaic applications

Abstract

Carbon fibers/polymer matrix composites tend to be used more widely instead of aluminum structures in the aircraft and aerospace industry. There are many reasons that explain the increasing interest for this class of composites due to the lightweight, high strength, high stiffness, good fatigue life, excellent corrosion resistance and low cost manufacturing. Moreover, a considerable effort is paid to improve the thermal/electrical conductivity and the electromagnetic shielding effectiveness of lightweight composites. It is well known that in operation, the engines of the aircraft generate a large amount of electrical current during start up. This electrical current is undesirable and must be conducted away. Otherwise, the electronic components need to be protected against electromagnetic waves produced by other sources placed inside or outside the aircraft. This paper concerns the state-of-the-art of the lightweight composites and deals with discussing solutions, new material recipes and testing results. This approach refers to the possible use of coated carbon fibers, carbon nanotubes and ferrite additive.

Irradiance sensitivity of the model parameters of photovoltaic cells

“…All the measurements are carried out by LabVIEW software application [31]- [33]. Specific numerical example considers a PV panel with silicon monocrystalline cell Saturn, that the diameter of the cell is 100 mm.…”

Photovoltaic Systems and Applications

“…The adoption of module-integrated inverters requires the installation of a relatively high number of inverters, each one with its protections, directly on the field, paying attention to the fact that the inverters have to withstand different climatic conditions. Yet, the adoption of module-integrated inverters allows for individual and independent control of the mono inverters, with possibility of minimising the losses due to different www.intechopen.com electrical behavior of the modules (that is, the mismatching of the current/voltage characteristics) and may bring some benefits in increasing the system availability, since the occurrence of an inverter failure affects only a mono module and the relatively low failure rate of the inverter may prevail over the increase of the number of inverters installed with respect to the other solutions (Andrei et al, 2007).…”

Wireless Monitoring and Remote Control of PV Systems Based on the ZigBee Protocol

“…Studies on photovoltaic phenomena have drawn the attention to the problem of PV behavior under varying environmental conditions [6]. The major problem is the strong dependence of a PV system response on many extrinsic factors such as temperature, insolation, cloudiness and pollution [7].…”