Abstract: A sun tracking method is disclosed. The method can track the position of sun continuously, without the need to install an optical sensor, to calculate a sun-tracking solar orbit function, and to calibrate the mechanical structure periodically. The method comprises the steps outlined below. (A) A motor of an attitude control device is driven for changing attitude of a photovoltaic cell device to sense and record a short-circuit current by a short-circuit current measuring device directly or in cooperation with the switching behavior of a switch power unit of a maximum power tracking control device, or to sense and to record an output power by a power measuring device. (B) A maximum value of the short-circuit current or the output power is calculated. (C) The motor-driving device is driven for modulating the photovoltaic cell device to an attitude corresponding to the maximum value of the short-circuit current or the output power.

Abstract: The present invention discloses a light sensing system and a control method thereof. The light sensing system comprises a body, a plurality of first light sensors, a base, a plurality of second light sensors and a processing module. A through hole is disposed on the body. The first light sensors are disposed symmetrically on the body and generating a plurality of first sensing signal after sensing lights correspondingly. The base is arranged under the body. The second light sensors are disposed symmetrically on the base, while the geometric center of the second light sensors corresponds to the geometric center of the through hole. The second light sensors generating a plurality of second sensing signals correspondingly after sensing lights via the through hole. The processing module connects to the first and the second light sensors, and controls the light sensing system according to the first and the second sensing signals.

Abstract: This invention discloses a solar sensing system and a solar tracking method thereof. The solar sensing system comprises a solar module, an azimuth sensor unit, an elevation sensor unit and a driving unit. The azimuth sensor unit and the elevation sensor unit are disposed on the surface of the solar module. The azimuth sensor unit senses sunlight to generate an azimuth signal. The driving unit receives the azimuth signal to turn the solar module until the azimuth sensor unit is aligned precisely towards the sunlight. The elevation sensor unit senses the sunlight to generate an elevation signal. The driving unit receives the elevation signal to turn the solar module until the elevation sensor unit is aligned precisely towards the sunlight. If the azimuth sensor unit and the elevation sensor unit are aligned precisely towards the sunlight, the solar module will also be aligned precisely towards the sunlight.

Abstract: The present invention discloses a pointing error correcting system and method thereof applied for a concentrated photovoltaic or solar heat energy system comprising a processing module, a driving module, a tracker and a measuring module. The method comprises steps of calculating a position of a celestial body; controlling the driving module to drive the tracker pointing toward the celestial body; calculating an error value between the pointing of the tracker and the celestial body measured by the measuring module through a coordinate transforming method; and correcting the driving module to drive the tracker pointing the celestial body.

Abstract: A sun tracking method is disclosed. The method can track the position of sun continuously, without the need to install an optical sensor, to calculate a sun-tracking solar orbit function, and to calibrate the mechanical structure periodically. The method comprises the steps outlined below. (A) A motor of an attitude control device is driven for changing attitude of a photovoltaic cell device to sense and record a short-circuit current by a short-circuit current measuring device directly or in cooperation with the switching behavior of a switch power unit of a maximum power tracking control device, or to sense and to record an output power by a power measuring device. (B) A maximum value of the short-circuit current or the output power is calculated. (C) The motor-driving device is driven for modulating the photovoltaic cell device to an attitude corresponding to the maximum value of the short-circuit current or the output power.

Abstract: This invention discloses a solar sensing system and a solar tracking method thereof. The solar sensing system comprises a solar module, an azimuth sensor unit, an elevation sensor unit and a driving unit. The azimuth sensor unit and the elevation sensor unit are disposed on the surface of the solar module. The azimuth sensor unit senses sunlight to generate an azimuth signal. The driving unit receives the azimuth signal to turn the solar module until the azimuth sensor unit is aligned precisely towards the sunlight. The elevation sensor unit senses the sunlight to generate an elevation signal. The driving unit receives the elevation signal to turn the solar module until the elevation sensor unit is aligned precisely towards the sunlight. If the azimuth sensor unit and the elevation sensor unit are aligned precisely towards the sunlight, the solar module will also be aligned precisely towards the sunlight.

Abstract: The present invention discloses a light sensing system and a control method thereof. The light sensing system comprises a body, a plurality of first light sensors, a base, a plurality of second light sensors and a processing module. A through hole is disposed on the body. The first light sensors are disposed symmetrically on the body and generating a plurality of first sensing signal after sensing lights correspondingly. The base is arranged under the body. The second light sensors are disposed symmetrically on the base, while the geometric center of the second light sensors corresponds to the geometric center of the through hole. The second light sensors generating a plurality of second sensing signals correspondingly after sensing lights via the through hole. The processing module connects to the first and the second light sensors, and controls the light sensing system according to the first and the second sensing signals.

Abstract: The present invention discloses a pointing error correcting system and method thereof applied for a concentrated photovoltaic or solar heat energy system comprising a processing module, a driving module, a tracker and a measuring module. The method comprises steps of calculating a position of a celestial body; controlling the driving module to drive the tracker pointing toward the celestial body; calculating an error value between the pointing of the tracker and the celestial body measured by the measuring module through a coordinate transforming method; and correcting the driving module to drive the tracker pointing the celestial body.