Individual secondary optical components in a spectral splitting solar concentrator utilizing a microlens array require multiple photovoltaic (PV) cells, which leads to the complexity of system alignment and a high cost. In order to improve the integration of the PV cells and thermal management, a spectral splitting concentrator coupled to double-light guide layers has been proposed. Using one-axis tracking, we further investigate the optical performance of the concentrator combined with a cylindrical microlens array with double vertically staggered light guide layers in detail. The results show that this solar concentrator maintains a good acceptance angle of ±2 deg in the east-west direction and an acceptable angle of ±14 deg in the perpendicular direction on both low and high spectrums, achieving a concentration ratio of 10×. Finally, the capability of lateral displacement tracking has been explored for an aperture angle of ±24 deg in this concentrator.
For the improvement of space photovoltaic cell efficiency, an astromesh deployable concentrator for space concentrating
photovoltaic (CPV) system is proposed. A deployable solar parabolic concentrator with an aperture radius of 3 m and a
concentration power of 35 kW has been designed. The astromesh deployable concentrator has a high degree of solar
concentration, lightweight, and easy deployment, which has an advantage over inflatable deployable concentrator and
rigid concentrator. We analyse the performance of the CPV system simulated by software Lighttools, and the results
indicate the CPV system can generate 270W electrical energy per kilogram, so the utilization of solar energy have been
enhanced effectively. This system can be used for the support of various spacecrafts power and space solar power