Project presentation for FURAP project funded by the Research Council of Oman (TRC), prepared by Dr. Ali H. A. Alwaeli

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Sohar University Renewable Energy LAB

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5. Photovoltaics (PV) – Solar Cells
• Photovoltaics convert sunlight into DC current that can be used for
various application, and through the use of inverter it is converted
to AC current.
• Types of PV systems:
1- Stand alone: DC current is drawn from the solar cell and directly
powering the application (DC machines), or with the use of inverters
and batteries, to operate (AC machines).
2- Grid tie: Draws current form the solar cell and powers the
application required, also links to the mains to feed excess capacity
back to the local mains electrical grid.
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6. Typical Photovoltaic systems:
Block Diagram of typical Stand-alone PV system:
Block Diagram of typical Grid-tie PV system:
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7. Typical Photovoltaic systems:
Actual photo of a Stand-alone PV system and Grid-tie PV system:
Sohar University Renewable Energy Lab -
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8. Photovoltaic (PV) power water pump
• Using a Stand-Alone PV system to power a water pump to move the
water from the water well to the watering location (farm).
• Typical Block Diagram of Stand-Alone PV water pumping System:
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9. Photovoltaic (PV) power water pump
• The proposed system is the most optimized system for the Omani
conditions, and it has been designed using REPS.OM software and
implemented within Sohar University campus.
• Schematic representation of the system :
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System Components:
The system consists of two subsystems:
1- PV modules system
a) PV module-array
b) Batteries
c) Charger Controller
d) Inverter
2- Water Pump system
a) Water Pump
b) Water storage container
c) Water well

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PV system
PV module-arrays:
Number of PV arrays: 6 arrays
Voltage of each array: 12 volts, 150 W
Total power: 900 W
Efficiency of PV arrays is 13.9 to 15 %.
Batteries:
Number of batteries: 2 batteries
Voltage of each battery: 12 volts and 200 Ah

12. ( system specifications )
System specifications are found by understanding the various
input/output relationships of the system components.
The analytical method is used, where a number of equations are used
to be able to design the system.
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( system specifications )

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( system specifications )

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( system specifications )

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( system specifications )

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Numerical Methods:
( HOMER AND REPS.OM )

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Numerical Methods:
( HOMER AND REPS.OM )

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Numerical Methods:
( HOMER AND REPS.OM )

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Numerical Methods:
( HOMER AND REPS.OM )

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Comparison between Diesel and PV systems:

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Noting that diesel generator emit the following
green-house gases, contributing to Global
worming

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Numerical Methods:
( HOMER AND REPS.OM )

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Photos of the working process throughout 3
months time period:

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Photos of the working process throughout 3
months time period:

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Photos of the working process throughout 3
months time period:

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Photos of the working process throughout 3
months time period:

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Photos of the working process throughout 3
months time period:

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Photos of the working process throughout 3
months time period:

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Photos of the working process throughout 3
months time period:

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Before starting the implementation of the
system:

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After implementing of the system:

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Conclusions:
• REPS.OM software shows the most optimum PVWPS for Oman with
a cost of energy of 0.18 $/kWh.
• PVWPS designs using HOMER and REPS.OM are economically and
environmentally better than the diesel system.

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Project Participation through various activities
and social events:

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Project Participation through various activities
and social events:

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Project Participation through various activities
and social events:

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Project Participation through various activities
and social events:

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Project Participation through various activities
and social events:

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Project Participation through various activities
and social events:

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Project Participation through various activities
and social events:

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Project staff:

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Dr. Hussein A Kazem

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This research received:
Research Project Grant Funding from
The Research Council of the Sultanate of Oman.
The Research Grant Agreement No. is
ORGSUEI11010 and FURAP/C2/HK/ENGEE.
I would like to acknowledge the support of the
Research Council of Oman.

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Thank you very
much for your
attention :D