ELTRY250
Chap 04
Lab 04
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System Components
Introduction
In this experiment, you will get familiar with the major components in PV systems
and common type of the energy storage systems. You will learn different type PV
systems.
Equipment
1.
2.
3.
4.
5.
6.
7.
8.
Three 175 W, PV Module
Incandescent light bulb
10 KΩ, resistor (Do not use with PV Module)
10 KΩ, 10 W Potentiometer (Do not use with PV Module)
Fluke DMM
Daystar Irradiance meter
DC power supply
2 Alligator – alligator wires
Procedure
1. Utilize the manufacturer label on a PV module and complete the following table:
PV Module specification
Manufacturer
Model Number
Electrical Rating Condition
Maximum Power
Current @ Maximum Power
Voltage @ Maximum Power
Short Circuit Current
Open Circuit Voltage
Min. diode Bypass current
Max. Series Fuse Rating
2. Connect 3 PV modules in series.
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ELTRY250
Chap 04
Lab 04
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Name:
System Components
3. Connect the incandescent light bulb across the above series modules.
4. Measure the voltage across the light bulb and the current through the light bulb.
Direct Coupled System
Irradiance
Voltage
Current
5. Connect the 10 KΩ potentiometer to the Ohm-meter as shown below
10 K
1
2
3
+
Ohm
-
Ohm Meter
6. Rotate the shaft of the potentiometer all the way counter clockwise and make sure
the reading on the ohmmeter is 0 Ω. If it is not zero, change the potentiometer
connection.
7. Rotate the shaft clockwise in ¼ steps and record the resistance in the following
table.
Potentiometer Resistance
Potentiometer Shaft Position
Measured Resistance
Fully Counter Clockwise
¼ Clockwise
½ Clockwise
¾ Clockwise
Fully Clockwise
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ELTRY250
Chap 04
Lab 04
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Name:
System Components
8. Construct the following circuit (Use Power Supply set to 12 V, instead of
PV Module).
+
A
R1
-
10 K
3
Amp Meter
1
R2
2
10 K
+
1
2
PV Module
-
V
Volt Meter
9. Turn the shaft of the potentiometer all the way counter clockwise.
10. Rotate the shaft clockwise in ¼ steps and record the amp-meter and voltmeter
reading in the following table.
11. Calculate the voltage drop across the potentiometer and record it in the following
table.
Potentiometer
Shaft Position
Measured
Resistance Value
(From above table)
Measured
Current
(mA)
Measured
Voltage
(V)
Calculated
Voltage
(V)
Fully Counter
Clockwise
¼ Clockwise
½ Clockwise
¾ Clockwise
Fully Clockwise
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ELTRY250
Chap 04
Lab 04
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Name:
System Components
12. Draw the schematic diagram for a Self regulating PV system.
Schematic, Simple Self Regulating PV System
13. Draw the schematic diagram of a charged controlled stand alone with load control
Schematic, Charged Controlled Stand Alone with Load Control PV System
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ELTRY250
Chap 04
Lab 04
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System Components
14. Draw the schematic of a charged controlled stand alone without load control
Schematic, Charged Controlled Stand Alone without Load Control PV System
15. Draw the schematic diagram of a stand alone system for AC load
Schematic, Stand Alone System for AC Load
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ELTRY250
Chap 04
Lab 04
System Components
16. Draw the schematic diagram of a grid tied PV system
Schematic, Grid Tied PV System
17. Draw the schematic diagram of a Net Metering System
Schematic, Net Metering System
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Chap 04
Lab 04
System Components
18. Draw the schematic diagram of a Dual Metering System
Schematic, Dual Metering System
Conclusion
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