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 solution for current flow through diode with series resistance
A simple analytical expression is presented for the current flow in a diode driven by a voltage source through a series resistance. The proposed solution is based on the Lambert W-function. The new expression leads to an efficient method for extracting series resistance from measured current-voltage data. Experimental results are presented which validate the proposed solution and extraction method.
Biodiversity, conservation, and sustainable development
This important book highlights the conflicts between economic growth and the conservation of nature in the context of sustainable development. It places particular emphasis on biological diversity and examines possible policies for resolving conflicts which arise from the contrasting goals of conserving the natural environment and economic growth.