PV Modules: Bifacial technology
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Introduction
New parameters that impact on bifacial extra production
Bifacial ratio:
•
•
Irradiation ratio received by the backside of the modules compared to frontside of the module during one period time (hourly, monthly, yearly ...).
Depends on module installation parameters, ground albedo (i.e. ground reflection) and irradiation conditions (direct or diffuse).
Module bifaciality:
Bifacial Ratio
=
Gback
Gfront
•
The backside of the bifacial module is not as efficient as frontside.
•
•
Is the ratio of backside module peak power compared to the front side.
Depends on mainly PV technology. It is normally indicated in module datasheet.
•
Bifacial Gain:
.•
Module Bifaciality:
=
Pmpp back
Pmpp front
Energy gain increase due to backside electricity production compared to the front side
Eback
Bifacial Gain
=
Bifacial Ratio * Bifaciality
Efront
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GoPV Project | 1st TRAINING COURSES
TECHNICAL FOCUS ON FUTURE SOLAR PV SYSTEMS
October 26-29th 2020View entire presentation