Improvement of the flexible support photovoltaic module system: A new type of cable-truss support structure system

The flexible support photovoltaic module structure system has advantages such as large span, fast construction speed, and suitability for complex environments. However, this kind of system has the disadvantage of insufficient stiffness and weak wind resistance. In this paper, a new type of cable-truss support photovoltaic module structure system with excellent wind resistance is proposed. Firstly, the superiority of the new system is proved by the aspects of static and dynamic performance. Then, the wind-vibration response is analyzed by the wind tunnel test. Finally, the influence of some design parameters on the system is revealed through finite element parameter analysis. The results show that the mechanical properties of the new system can be improved by 10.3 % and can resist the wind speed of 36 m/s. The initial tension of the stability cable, span, and cable spacing are the main factors affecting the system stiffness. The initial tension of the component cable and the photovoltaic module inclination have little influence on the stiffness. The reduction in the deflection-span ratio or the rise-span ratio requires greater initial tension from the component cables and stability cables. The research results are of great significance to the application of photovoltaic power generation technology.