The deployment of hybrid solar energy systems, particularly concentrated photovoltaic-thermal (CPV-T) systems capable of simultaneously generating electrical and thermal energy, has attracted increasing attention due to their potential for enhanced efficiency. Among the various strategies investigated to enhance system performance, dynamically controlled concentrating mirrors, such as heliostats, have demonstrated exceptional effectiveness. This study examines the impact of dual-axis sun-tracking mirrors on CPV-T efficiency under realtime operational conditions. The proposed system integrates three coaxial mirrors mounted on two motorized axes, enabling continuous and precise sun tracking through adjustments of both vertical and horizontal angles to optimize solar radiation capture. The system employs an open-loop controller to drive the motorized axes, ensuring accurate mirror alignment without the need for feedback sensors. By employing movable mirrors, the stationary photovoltaic-thermal (PV-T) device benefits from sustained exposure to solar irradiance and precise alignment of all three mirrors towards the PV-T module, leading to significant performance improvements. Experimental findings confirm that this dynamic tracking mechanism, driven by the open-loop controller, enhances system efficiency, highlighting its potential for advancing CPV-T technology.
