Chongqing Huanyu Automobile Sales Company , https://www.huanyuauto.com
Engineering Supervision for Bifacial PV Systems
Bifacial photovoltaic modules have the ability to harness sunlight from both the front and back sides, converting it into usable electricity. This dual-sided efficiency significantly enhances the performance of solar projects, boosting yields and reducing the levelized cost of energy (LCOE). As a result, bifacial PV modules are gaining popularity across various solar applications, from rooftop installations like awnings and canopies to large-scale ground-mounted systems.
The growing demand for bifacial PV systems underscores the need for specialized engineering oversight. Unlike conventional monofacial PV designs, which follow established codes and standards, bifacial systems lack specific guidance within existing regulations. Additionally, equipment manufacturers often offer conflicting advice, driven by their own interests. Navigating these complexities to create an optimized bifacial PV system—one that complies with regulations, maintains warranties, minimizes risks, and balances cost with energy output—demands extensive expertise and hands-on experience.
Designing a bifacial PV system requires careful consideration of current flow, as it is directly proportional to irradiance. Since bifacial arrays collect light from both sides, they operate at higher current levels than monofacial ones under similar conditions. Ensuring safety and compliance involves designing all DC circuits to handle these increased currents, as well as verifying that inverters and other power electronics function within safe operational limits. Failure to adhere to these guidelines can compromise equipment integrity and void warranties, transferring liability to the EPC contractor or project owner.
Performance modeling for bifacial systems must account for worst-case scenarios, such as unusually high irradiance or changes in ground reflectivity after severe weather events. Overly conservative assumptions might inflate projected outputs, leading to unrealistic expectations and potential disputes over performance guarantees. A precise performance model should factor in rear-side shading, mismatches, soil accumulation, seasonal variations in albedo, and long-term degradation trends to accurately predict actual energy generation.
Value engineering in bifacial PV projects presents unique challenges compared to traditional single-sided setups. Unlike monofacial systems where a single model suffices for both design and performance prediction, bifacial projects require separate models tailored to each purpose. Balancing these models ensures neither safety nor financial feasibility is compromised. However, inconsistencies among manufacturers' data sheets make interpreting bifacial gains particularly tricky. While standardization efforts are ongoing, current discrepancies necessitate thorough analysis by knowledgeable engineers.
Optimizing a bifacial PV system involves striking a delicate balance between enhancing performance and controlling expenses. Underestimating gains could jeopardize safety, whereas overestimation may strain budgets without delivering corresponding returns. An experienced designer will ensure that all aspects—from circuit sizing to equipment selection—are aligned with realistic expectations while maintaining regulatory compliance. Such precision prevents unnecessary expenditures while guaranteeing reliable operation.
For those seeking expert assistance with commercial-industrial solar projects, Pure Power Engineering offers tailored solutions including value-engineered designs and detailed construction drawings. Our team combines technical proficiency with practical insights to deliver projects that meet today's demands while preparing for tomorrow's challenges. Contact us today to explore how we can support your next initiative!