simply so the going for walks voltage is sufficient for battery charging. Divide the tool voltage thru the   
 nominal going for walks voltage of each module. To determine the huge style of modules in parallel the   
 array output required (Ah) is cut up thru the output of each module (Ah). However this method   
 does now not exercise in this research as it does now not hold in thoughts many things and in a hybrid tool   
 power flows need to be recounted from hour to hour.  
 2.8.4 Sizing The Charge Controller/ Battery Charger  
 Generators in renewable systems are used to power the battery charger, particularly   
 withinside the path of horrible weather, or to supply heavy loads. They can be routinely or manually   
 controlled. In most systems, each diesel, petrol or fueloline driven turbines are used (Hove,   
 2000).   
 A battery charger converts the AC output to DC for the reason of battery charging. The battery   
 charger ought to be determined on such that it converts the 240 volt, 50 Hz AC to DC on the favored bus   
 voltage of the battery storage bank. It ought to be able to provide a right away modern as an awful lot as the   
 maximum allowable price price of the batteries. The  essential factors to bear in mind whilst   
 selecting a battery charger are the tool voltage and the maximum price of price of the   
 batteries. There won`t be a battery charger with exactly the maximum modern distinct so a   
 charger with lower modern may be chosen. The most probably available charger may be 24 Volt   
 60 Amps. The period of the battery charger is determined thru the size of the battery bank (Hove,   
 2000).  
 A price controller ought to be sized to byskip the anticipated non-prevent modern from the   
 array (or sub-array) into the battery, and ought to be able to withstand short peak   
 currents due to sunnier than ordinary conditions. It is essential that the controller be   
 efficaciously sized for the cause that expenses associated with the controller are a first-rate deal extra than the   
 rate of initially installing a slightly big controller. A module will generally have a   
 maximum modern output it is its rated short circuit modern (whilst battery voltage is   
 low). It is possible for irradiance levels to obtain 3000 watts/m²; the short circuit modern is   
 generally rated for irradiance levels of 1 thousand watts/ m². Charge controllers ought to be sized   
 therefore, to adjust 130% of a module`s ordinary short circuit modern. The period of a