role of solar tracker

Understand the role of solar tracker

The term solar is used for something that relates to the sun. A tracker   is for describing something that is used to follow another.  A solar tracker does exactly that. It follows movement of sun in its rotation from east to west each day. Solar trackers help to keep solar collectors or solar panels adjusted directly towards the sun when it moves across the sky each day.

In relation to the photovoltaic panels, solar trackers will orient towards sun harnessing more sunlight. Solar trackers are placed in proper position and attached to the solar panels. The range of tilting varies depending on type of the trackers you obtain and install.

role_solar_trackerThe plan is to have ability to tilt solar panels in direction that the sun usually moves during the day. This is the same path is follows the entire years although intensity will be affected by weather changes and seasons. The functionality of tracking is simple. When there are more photovoltaic panels facing directly towards the sun, more power will be generated.

Types of solar trackers

There are active and passive trackers although there are other designs being made for tracking movement of sun in more freely rotating manner.  Solar trackers moving along solar through single or dual axis and simple mechanics in their tracker devices are widely used.  Dual axis trackers help solar panels to move in 2 directions instead of just one. This means that they trap more power from sun because they have more range of directional positioning.

Functioning of solar tracking

double-axis_solar_trackerMovement of trackers is dictated by passive and active drivers. These drivers are completely different. Passive trackers depend solely on the solar heat for guidance and movement of tracker.  Basically, low boiling point compressed gas fluid moves the tracker by flowing to either of its side like teeter totter responding to imbalance that is created by heat from sun.

Active trackers have a controller monitoring position of sun movement so as to direct the motors designed to move trackers.

Before installing solar trackers, it is better for you to have discussion with a solar installer to determine the best position. In general, solar trackers will work in the best way when   fixed   in non shaded areas on flat roofs or on the ground.

When you fix solar trackers you increase the solar energy that your panel traps. The challenge of using a tracker is that it needs more equipment for the solar system such as gears and moving parts that require regular maintenance, replacement of worn out parts and repairs. If the tracker system is damaged when solar panels are at extreme angle, the lost production will be much until the system is fixed. Solar trackers are also prone to damage by storm than actual solar panels.


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