SUN TRACING METHOD OF SUN-AUTOMATIC TRACING DEVICE DRIVING WITH SMALL AND LOW POWER CONSUMPTION WHILE MAINTAINING PHOTOVOLTAIC EFFICIENCY

摘要

PURPOSE: A sun tracing method of a sun-automatic tracing device is provided to reduce an error produced in a sensor method by calculating the celestial sphere position of the sun and tracing the sun and to maintain generation efficiency while reducing the tracing frequency by using a sunlight advancing tracing control method. CONSTITUTION: In a sun tracing method of a sun-automatic tracing device, the position of the sun is calculated as the celestial sphere ecliptic position and an angle of azimuth and an angle of azimuth at the installation position are calculated and programmed. A PV(Photovoltaic) module is driven when an error angle is produced between an angle of azimuth of a normal of the PV module turning to the sun and the angle of azimuth of the sun. The PV module is driven to make the angle of azimuth of the normal of the PV module proceeds the angle of azimuth of the sun to the extent of a second angle when the angle of azimuth of the normal of the PV module is behind the angle of azimuth of the sun to the extent of a first angle. The first angle is 5 degrees. The second angle is 5 degrees.