Solar Tracking Control Systems to Increase Efficiency of Solar Modules

The Simatic S7-1200 control system, provided by Siemens, tracks the movement of the sun all through the day and the year.

The new control system loaded with precise astronomical data assists the solar panels mounted over the movable type of tracking systems to follow the movement of the sun. The new control systems assists in tracking the sun, specific to the location of installation of the system.

The movable type of solar panels assisted by S7-1200 control system from Siemens receives higher level of solar energy than the fixed type of systems and generates 35% more power.

Each unit of S7-1200 control system supplied by Siemens incorporates the ‘Simatic Library for Solar Position Algorithm’ licensed by the National Renewable Energy Laboratory (NREL) in the U.S. The installed algorithm enables the control system to assess the position of the sun up to 0.0003° accuracy and adjust the solar PV modules accordingly. The dual-axis tracking system is fitted with three-phase AC motors for power and to control the movements of the module all through the day and also to prevent overshadowing the neighboring modules. The installed software performs its astronomical computations by utilizing  factors such as latitude, longitude and the correct time. The control system is programmed to save the modules during adverse weather conditions.