In a collaborative effort by a Chinese-Canadian research team, a new solution for photovoltaic (PV) module mounting has emerged, targeting wood racking systems. These novel mounting mechanisms, comprising two types of spacers and two types of clamps, are designed to be easily 3D printed using commonly available materials.

Dimensions of the 3D printed mounting mechanisms. (Image Credit: University of Western Ontario)

Wood-based racking systems, particularly suitable for ground-mounted agrivoltaic setups, have traditionally lacked compatibility with standard front surface attachments seen in aluminum racking systems. However, this limitation has been addressed with the introduction of the 3D printed clamps, offering a versatile solution for solar module mounting on wood structures.

The research, spearheaded by the University of Western Ontario, emphasizes the advantages of wood racks, including distributed manufacturing feasibility, cost-effectiveness per watt of materials, and resistance to corrosion. Moreover, these 3D printed mounting mechanisms are positioned as environmentally friendly alternatives, boasting lower embodied energy and carbon compared to conventional materials.

Simulation studies conducted using Abaqus software have revealed promising performance metrics for the proposed mounting mechanisms. Various designs, including T-shaped and U-shaped clamps, were evaluated for stress distribution, with the former demonstrating superior results.

Real-world applicability was confirmed through the printing and installation of multiple prototypes, highlighting ease of installation and compatibility with standard lag bolts. Additionally, an economic analysis was conducted, considering material costs, power consumption, and production time.