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OMRON Control Components Selected for Use in a Sun-Tracking Solar Power System in Madrid, Spain

OMRON Corporation (TSE: 6645; ADR: OMRNY; “OMRON”), a global leader in sensing and control technologies, announced that its control components have been used in a sun-tracking solar power system situated near to Madrid, Spain. The system was installed by Electricidad Alsanbo S.A. (“Alsanbo”), a Spanish systems integrator.

The system adjusts the positioning of solar cell panels to ensure that they remain perpendicular to the incident angle of the sun’s rays in order to maximize energy output. As a result, the system is able to generate 30 to 40% more power than traditional stationary systems.

In response to Alsanbo’s need for a total solution, OMRON supplied all of the components necessary for the system’s operation including solar conditioners, programmable logic controllers (PLC), a PLC-based communications interface, programmable terminals, power supplies and limit switches.

Programmed with historical data on the position of the sun, OMRON’s PLCs precisely control the horizontal rotation and vertical tilt of the solar panels to accurately track the sun’s movement.

OMRON’s solar power conditioners convert DC power generated by the solar panels into AC power for household use. They also incorporate a grid interconnection protection function which automatically stops the system operating if a disturbance occurs in the commercial power system or an accident occurs on the power company side of the interconnection.The methods and safety standards concerning interconnection for power companies vary between countries. OMRON optimized this system to conform with the Royal Decree that regulates interconnection in Spain.

Inverters alter electrical frequency in response to data from the PLC on the rotation and tilt angles in order to control the motors that move the solar panels.


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