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Design Solar Plant For House and offices by itself (Understanding Purpose, not Practical)



KISSAN  SOLAR EDUCATION



CALCULATE RATING of Solar's Equipment : Are Your Looking for SOLAR DESIGN for your Home, Offices by Itself ?




Energy Flow Diagram in a Solar System for Home, Offices

To know Rating of Each equipment , you should calculate from Reverse Direction of Energy Flow Diagram.

Step 1 : Calculate Load Requirement : Number of load you want to run from Solar.



Important Calculation  

1. Total wattage of Load  : (watt * quantity ) =  9*2 + 60*1 +150*1 . . . . . +250*1 =628 Watt 
2. Total Energy Consumed By load : (wattage * number . of hour used) =  9*5*2 + 60*8*1 + .......+ 250*3*1 = 2820 Wh

Step 2 : Find out Size of Inverter ,

                        

Important :  
Output Energy of Load  = 2820 wh

We need to find out Rating of inverter and  Input of Inverter or output of Battery : 
Every inverter has Efficiency mentioned by manufacturer : 90% to 95 %. Let take 93 %



Rating of Inverter = Total wattage at output need = 628 VA = 650 W inverter

Step 3 : Size of Battery : 




To find Size of Battery, we need two Important Parameter of Battery 
1. DoD ( Depth of Discharge)
2. Efficiency of Battery


Depth of Discharge : This indicates how much charge you can take from battery for reliable operation and life of battery. Ex if DoD is 70%, you can discharge 70 %  of battery, after 70%, it is recommendation to re charge quickly the battery .
Lead Acid battery has 50% DoD
Excide Battery has 80% DoD







You can also consider Autonomy i.e no. of days do you want to keep charge storage in battery.

For 2 days, total charge required,  total rating of battery need = 3 * 381 = 1143 Ah


Step 4 : Size of Charge controller and MPPT : 





Here, Input energy of Battery is considered 4566 Wh, but according to problems it must 3653Wh.

Step 5 : To find out Rating of Panel , No. of Panel :



In Every area there is given peak hour of sunshine i.e. number of hours sunshine become maximum, 
You can find this from google

if you are in Saket, Delhi =  

Annual Average : 4.33 kWh/m2/day

If you are in Ranchi jharkhand = 

Annual Average : 5.15 kWh/m2/day







Here Size of Charge controller will 12 V, 82A


Assignment Question :  

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