# ECET425L Lab 2- Solar Panels Objectives: Â· Learn some basic solar panel terminology Â· Be able to d

ECET425L
Lab 2- Solar
Panels
Objectives:
Â·
Learn some basic solar panel
terminology
Â·
Be able to distinguish between
different solar panel types and efficiencies
Â·
Understand how solar panels can
be used in series and parallel
Parts List:
Â·
12 volt solar panel-PV(photovoltaic)
Â·
Solar Panel Spec Sheets in Doc Sharing
Introduction:
The first solar
cell was developed over 100 years ago. Solar panels are arrays of solar cells
and are used to capture the sunâ€™s energy or insolation and convert it into
energy. There are many different types of solar panels and we will look at
several different ones.
Step 1: Solar Panel Definitions
Define
the following as pertaining to solar panels:
OCV
or Open Circuit Voltage
SSC
or Short Circuit Current
Maximum
Power Point Voltage
Maximum
Power Point Current
Polycrystalline
Solar Panels
Moncrystalline
Solar Panels
Amorphous
Solar Panels
Organic
Solar Panels
Solar
Panel Concentrator
Off
Grid PV System
Grid
Tied PV System
Charge
Controller
Inverter

Step 2: Questions about the Solar Panel
Spec Sheet
1.
What is the OCV of your 12 volt
solar panel?

2.
What is the SSC of your 12 volt
solar panel?

3.
What is the output power of

4.
Define the STC parameters for
PV panels.

Step 3: Procedure
1.
Measure the OCV of your solar
panel in the sun or with a 100 watt incandescent bulb shining on it.

2.
Measure the SSC of your solar
panel in the sun or with a 100 watt incandescent bulb shining on it.

3.
What is the physical size of

4.
What is the efficiency of your
solar panel from your calculations? Use
an insolation value of 1000 watt/meter^2

5.
State how many sun hours it
would take for one of your solar panel s to fully charge your 12 volt 5
amp-hour battery?

6.
What is the OCV and SSC with
your two solar panels in parallel?

7.
What is the OCV and SSC with
your two solar panels in series?

Step 4: Calculations and Series Parallel
Connections
1.
Using aBP 4200J 200 Watt Solar
Panel how many panels would be need for a 300 volt DC 1000 watt system?

2.
A typical 10k watt sine wave
inverter would require how much current from a 48 volt battery system at full
output power? Assume 80% efficiency. Remember Power=Voltage*Current

3.
If only 12 volt 250 amp-hour
batteries are used.
What is the configuration
for a 48 volt 1000 amp-hour system? How many in series and how many in
parallel? What is the configuration for
a 72 volt 250 amp hour system?
How long can a 12 volt 4 amp
pump operate from one 250Ah battery with a 50% DOD?