The photovoltaic tracking array is designed to align with the sun’s movement in order to optimize the solar energy absorbed by the photovoltaic surface. Tracking arrays optimize energy production by effectively capturing both direct and diffuse sunlight. The system is also known as a solar tracking array or tracking array.
Also See: What are Monoaxial Trackers?
Types of Solar Tracking Array
The solar array can be mounted in either a fixed position or on a sun-tracking rack that precisely follows the movement of the sun. There are primarily two main types of track racks: those with a single axis of rotation and the other one with two axes of rotation, also known as sun-tracking. The following are the two most common orientations of PV arrays.
1. Single-Axis Tracking
It enables the solar array to follow the movement of the sun from east to west. It is commonly used with flat-plate systems and sometimes with concentrator systems.
2. Two-Axis Tracking System
It is employed mainly in PV concentrator systems, ensuring that the solar array continuously faces the sun. It is primarily used with PV concentrator systems. Tracking arrays with two axes allow for the capture of the highest amount of daily energy.
In general, a single-axis tracker can generate an additional 15% to 25% of energy per day compared to a fixed solar panel setup. A dual-axis tracking system, a further enhancement of approximately 5% on top of that can be expected along with this setup. However, the actual benefits will vary to some extent depending on the location and time of year.
Also See: What is Dual Axis Tracking?