*3.3.5 Regulator calculations*

*Solar Cells - Theory, Materials and Recent Advances*

**3.3 Sizing photovoltaic calculations**

*3.3.1 Calculate the number of module*

*3.3.2 About The Efficiency*

*3.3.3 Load calculations*

P = 6\*3.3 = 20 W

1.Battery efficiency = 0.90

3.Inverter efficiency = 0.85

The Power = voltage\*current

Total power = 20 W \*1 = 20 W

Battery capacity = 148/12 = 12.31AH

P (W/h) = 20\*6 = 120 W/h

The cell Production = 18

The available capacity 70AH

*3.3.4 Battery calculations*

2.Charge controller efficiency = 0.90

4.Conversion factor for DC load = 0.81

5.Conversion factor for AC load = 0.72

income to run any device operates on–off actuation 6 hours.

(Ipmax and Vpmax are provided by the manufacturer).

illuminated.

Fuse 1.6 A, Switch (on\off), Zener 12 voltage, DC haloseen lamp 12 v Potentiometer 1MΩ. A new microscope circuit was designed on experimental board and expert in university lab using a power supply unit, it was adjusted on DC current 3A and 12 V, the board connected to the supply and turned on the lamp was

System sizing calculations are important, because unless the system components are balanced, energy (and ultimately, money) is wasted. A microscope needs 20w

To calculate the number of panels required to cover a given load, you just need to know the current and voltage at the point of maximum power: IPmax and Vpmax

Total power (Energy consumption) = the power\*number of devices

The required power of cells = energy consumption/system factor

The required battery capacity = battery capacity/depth of discharge

Power (watts/hour) = total power\*required time loads

The required power of cells = 120 W/0.81 = 148 Wh Battery capacity = the required power/system voltage

The No. of Modules = battery capacity/cell production The No. of Modules = 12.31/18 = 0.68 ≈ 1modules

The required battery capacity = 12.31/0.4 = 30

**446**

The charge controller load current = maximum current cell\*the number of modulus

Isc = 3.5A

Appropriate regulator = 3.5\*1 = 3.5A
