Stability of electric characteristics of solar cells for continuous power supply

Abstract

This paper investigates the output characteristics of photovoltaic solar cells working in hostile working conditions. Examined cells, produced by different innovative procedures, are available in the market. The goal was to investigate stability of electric characteristics of solar cells, which are used to day in photovoltaic solar modules for charging recharge able batteries which, coupled with batteries, supply various electronic systems such as radio repeaters on mountains tops, airplanes, mobile communication stations and other remote facilities. Charging of re charge able batteries re quires up to 25 % higher volt age com pared to nominal output volt age of the battery. This paper presents results of re search of solar cells, which also apply to cases in which continuous power supply is required.