THEORITICAL BACKGROUND OF SOLAR
TRACKER
18
AEIE, RCCIIT
Chronological Solar
Tracker
•
Works with the rotation of the earth.
•
Have no sensors.
•
Depends on the geographical location.
•
Uses a controller to calculate the moment and position of the earth
with respect to the sun at a given time and location.
Single
Axis Tracker
•
Tracks in a single cardinal direction.
•
It has a single row tracking configuration.
•
More reliable.
•
It has a longer lifespan.
The common categories in which single axis trackers can be classified holds:
•
Horizontal single axis trackers (HSAT).
•
Horizontal single axis tracker with tilted modules (HTSAT).
•
Vertical single axis tracker (VSAT).
•
Tilted single axis tracker (TSAT).
•
Polar aligned single axis tracker (PSAT).
Figure 3.4: Single Axis Tracker
THEORITICAL BACKGROUND OF SOLAR TRACKER
19
AEIE, RCCIIT
Dual Axis Tracker
•
It moves along two cardinal directions (Horizontal & Vertical).
•
The axes are traditionally orthogonal.
•
Its efficiency is much more than any single Axis Tracker.
•
It conventionally follows the movement
of the sun and hence
captivates maximum solar radiations.
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