Chosen diagnostic methods of photovoltaic modules
Solar modules under ordinary working condition are exposed to amount of degradation factors which deteriorate their properties. The most important degradation of PV modules during operation are optical, electrical and thermal degradation. The result of these factors is performance degradation of the modules, or even can caused their fault. It is important to find the cause of the fault and its timely removal. The choice of convenient diagnostic method can reduce financial losses and increases safety of photovoltaic power plant. The example of tests performed on PV modules by using infrared (IR) thermography and, potential induced degradation (PID) are presented in this paper.
Faults in photovoltaic modules and possibilities for their detection by thermographic studies
This paper presents a review of the studies of photovoltaic modules through passive thermography. The different types of faults in photovoltaic panels and their representation in the thermographic images are considered. The factors that influence the study and the ways to avoid them are described.
Representation of systems disturbed by wide band noise
In this paper, a method of handling and working with wide band noise is developed. We represent wide band noise as a distributed delay of white noise and use it to reduce a nonlinear system disturbed by wide band noise to a nonlinear system disturbed by white noise. An application of this reduction to a nonlinear filtering problem under a wide band noise disturbance is discussed.