Solar cells represent the fundamental power conversion unit of a photovoltaic system [1,2].
Crystalline silicon cell technology is well established. The modules have a long lifetime (20 years or more) and their best production efficiency is approaching 18%. Solar energy can be utilized in two ways: solar heatingkooling and solar electricity. Some appliances can be connected directly because they work on dc at the system voltage. Other appliances may need a voltage adaptor to adjust Ihe voltage [5] or a power inverter to increase the voltage and change it to the ac forms[?].The application of solar arrays for residential or storage systems have been addressed in [4].Solar arrays were developed for power satellites in the space program [6].
In high power applications, parallel connected converters are often used to provide power [7].