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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	Datasheets
ETA-400	For up to 4 m² array Can be used with up to 5 x BP380,4 x BP3125 or 3 x BP4175 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 BP4175 modules	2.5m	180º	0-45º	ETA-1000
ETA-1500	For up to 15 m² array Can be used with up to 12 x BP4175 modules	2.5m	180º	0-45º	ETA-1500
ETA-2000	For up to 20.5 m² array	2.75m	90º	0-30º	ETA-2000
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
DEG-7000NT	For up to 60 m² array	3.3m	360º	10-90º

 

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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