## Thursday, August 8, 2013

### PPT On Solar PV System Design

Solar PV System Design Presentation Transcript:
1.Solar PV & Diesel GENERATOT Hybrid System Design

2.System Sizing

3.System Calculations:
Anatomy:    48 hrs (continued)

Whr    =    watt (load) x hrs
25000 x 48
=    120,000  x 1.3 (losses)
=    156,000

PV Panels Required:

Panel Size:    =    156,000/5.5
=    28363.6363 Watts
=    28.36 KW  or 29 KW

System available with Client is 35 KW

4.PV Panels Required for 35 KW systemSystem     =    35000/ 230
=    152.17  or 153
Recommended     154 Panel

5.Battery Calculations
Battery Sizing :
0.85 for battery loss
0.8 for depth of discharge

Battery Capacity (Ah) =   Total Watt-hours per day used by appliances x Days of autonomy                                                     (0.85 x 0.8 x nominal battery voltage)

=    60,000  x  2
32.64

=    3676.47 Ah

No. of Batteries Required    =  24  batteries (2 volt and 4000 Ah)

6.Solar Charge Controller:
According to standard practice, the sizing of solar charge controller is to take the short circuit current (Isc) of the PV array, and multiply it by 1.1 for MPPT and 1.3 for PWM

Charge controller        =    8 x 8.25 x 1.1
=    72.6 Ampere
Therefore  10 , 80A (T80  charge controller will be required  for system to fulfill the 600 A) .

7.Inverter Sizing
An inverter is used in the system where AC power output is needed. The input rating of the inverter should never be lower than the total watt of appliances. The inverter must have the same nominal voltage as your battery.
For stand-alone systems, the inverter must be large enough to handle the total amount of Watts you will be using at one time. The inverter size should be 25-30% bigger than total Watts of appliances. In case of appliance type is motor or compressor then inverter size should be minimum 3 times the capacity of those appliances and must be added to the inverter capacity to handle surge current during starting.
Client –Energy has 20 KW inverter which is more than requirements.

8.Battery Selection:
Applications:
¦ Utility (stations and substations)
¦ Power Distribution
¦ Switchgear
¦ Telecom Equipment
¦ Solar/Photovoltaic
¦ UPS
24 batteries will be connected in series  to obtain 48 volts and  capacity will remains constant 4000 Ah which is Client requirement

9.Equipment Selection

10.Inverter:
Single Phase bidirectional dual mode hybrid  inverter for mini grid system
Pure sine wave out put
Single phase configuration
High efficiency more than 94%
Automatic/manual generator control

11.System  layout