Applied Digital Control for Localization of the Maximum Power of Photovoltaic Generators
This paper describe the development of a digital control applied in energy generation using photovoltaic cells in joint with the other generator system (a diesel generator, for example) the technique consist in the localization of the maximum power point (pick power tracking) of photovoltaic cells utilizing digital control. Its application is attractive to isolated load system, such as isolated communication system and data transmission located in remote Amazon areas
Exact analytical solutions of the forward non-ideal diode equation with series and shunt parasitic resistances
Abstract Exact closed form solutions based on the Lambert W -function are presented to express the forward current–voltage characteristics of non-ideal single-exponential diodes containing all possible combinations of series and shunt parasitic resistances. It is shown that these expressions could be useful for carrying out highly accurate computations at speeds almost as fast as those possible when using less precise approximate solutions based on common elementary functions.
Improved approximate analytical solution for generalised diode equation
A mathematical function for representing the generalised normalised diode equation is presented. This function, being simple, accurate and, more importantly, continuous, provides solutions for the generalised normalised diode equation which are in excellent agreement with numerical calculations