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Solar
Trackers
A solar tracker provides a convenient means of
mounting modules and enables the panels to automatically follow the
sun during the day and throughout the seasons, giving 30-40% more
power than a fixed array. Output power is not only maximised,
but is uniform - an advantage for applications such as pumping water.
They are particularly useful in high sunlight areas
or for large solar pumping systems and give substantial benefits in
summer (marginal in winter).
They are worthwhile when the cost of the tracker
increases the array output for less than buying equivalent extra solar
modules, especially when the greatest power demand occurs in summer.
For water pumping applications trackers offer a
significant increase in the amount of water pumped and provide a
smooth flow of water from dawn to dusk, allowing the pump to start
earlier and continue later in the day. They can double the
amount of water produced in summer, when it is typically needed
the most.
Other advantages of a tracked array are allowing
morning, afternoon and intermittent periods of bright sunlight to be
captured. These trackers use an optical solid-state sensing
system to keep a PV array precisely facing the sun. Sun sensors
mounted on the controller monitor the differential amount of sunlight
on opposing sensors. The controller then seeks to equalize the
sunlight received by opposing sensors by moving the PV array.
During cloudy conditions it moves to the horizontal
position in order to maximise output from the diffuse sunlight
conditions. At daybreak it automatically returns to the sunrise
position.
Lorentz
Solar Trackers
Single Axis Trackers
These
have a manually adjustable tilt angle of 0 - 45 °and automatic
tracking of the sun from East to West.
They use
the PV modules themselves as light sensor to avoid unnecessary
tracking movement and for reliability. At night
the trackers take up a horizontal position. Powered
directly from one of the PV modules (12 to 200 V) or for battery
charging applications from an additional 10 Wp PV module.
Low power
consumption of ~ 1.25 kWh per year.
Trackers
(except the ETA-DIY)
include: mounting pole; galvanised steel frames to fit all
commercial solar panels without any drilling required; all hardware
necessary for installation; control electronics; drive unit;
installation instructions.
|
Model Number |
Description |
Mast Height |
East/West Range |
Elevation
Range |
Data sheets |
|
ETA-400 |
For up to 4 m² array
Can be used with up to 5 x BP380,
4 x BP3125 or 3 x BP3165 modules |
Requires 50-90mm diameter
pole -not included
|
180º |
0-45º |
ETA-400 |
|
ETA-1000 |
For up to 10
m² array
Can be used with up to 8 x BP3165 modules |
2.5m |
180º |
0-45º |
ETA-1000 |
|
ETA-1500 |
For up to 15
m² array
Can be used with up to 12 x BP3165 modules |
2.5m |
180º |
0-45º |
ETA-1500 |
|
ETA-DIY |
For up to
10 or 15
m² array - includes all fixings, motor and controller |
Steel pole or
frames -not included |
180º |
0-45º |
n/a |
Deger
Solar Trackers
These
simple reliable trackers automatically track the sun by rotating the
PV array around the pipe mast then tilt for elevation position with
the bottom edge of the array remaining parallel to the ground.
Dual
Axis Trackers
Dual axis
trackers track the sun both East to West and North to South for
added power output (approx 40% gain) and convenience. Trackers
include: mounting pole; anodised aluminium frames to fit all
commercial solar panels without any drilling required; all hardware
necessary for installation; control electronics; drive units for
azimuth & elevation axes; installation instructions. The DEG-300EL
requires a 50-90mm diameter mounting pole (not included).
All
models are suitable for latitudes 25° to 90°.
Higher
masts are available or alternatively trackers are available without
masts.
When
ordering please state how many & what type of modules are to be used
and what system voltage is (grid-connect or stand-alone)
Design
windspeed of 160km/h (100mph). 2 year warranty.
|
Model Number |
Description |
Mast Height |
East/West Range |
Elevation
Range |
Data
Sheets |
|
DEG-300EL |
For up to 3 m² array |
Not Included |
200º |
15-90º |
DEG-300EL |
|
DEG-5000NT |
For up to 40
m² array |
3.3m |
360º |
10-90º |
DEG-5000NT |
|
DEG-7000NT |
For up to 60
m² array |
3.3m |
360º |
10-90º |
DEG-7000NT |
|
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SOL-Conector Control System
|
This sensor
detects the brightest spot in the sky and controls the drive
motors to direct the solar array towards the sun. During
overcast conditions the array is adjusted to face the
brightest part of the sky.
One SOL-Conector
is used for each axis and these are powered using an Energy
Converter. This can be powered either directly from the
solar module or string, from a battery in stand-alone
systems, from the AC grid or from an additional 1-5Wp PV
module for self-sufficient systems. Converters with
operational voltage of either 9 - 34 V or 40 - 370V DC or 40
- 265Vac are available which need to be selected at time of
order. |
Uses less
~ 5Wh per day, negligible compared to potential increase in energy
provided by tracking a PV array. It does not use any energy at
night.
Data Sheet
WindGuard
Product code: DEG-WG16
Available
for the DEG-1600EL as an option this enables the tracker to be
automatically parked in horizontal position in occasions of extreme
wind. Includes anemometer & control unit.
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