Abstract
Many tracking PV systems avoid row-to-row shading by backtracking in morning and afternoon. Because the common single-axis backtracking implementation assumes the array is in a horizontal plane, it does not fully prevent row-to-row shading in arrays installed on cross-axis slopes, e.g. an east-west slope for a tracker with north-south axis alignment. This paper presents the simulated effect of reduced self-shading on annual production with two modified backtracking strategies. Depending on the array geometry and the steepness of the cross-axis grade, using a modified backtracking strategy improved annual yield by 3-10%.
Original language | American English |
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Number of pages | 6 |
DOIs | |
State | Published - 2021 |
Event | 2020 47th IEEE Photovoltaic Specialists Conference (PVSC) - Calgary, Canada Duration: 15 Jun 2020 → 21 Aug 2020 |
Conference
Conference | 2020 47th IEEE Photovoltaic Specialists Conference (PVSC) |
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City | Calgary, Canada |
Period | 15/06/20 → 21/08/20 |
Bibliographical note
See NREL/CP-5K00-76023 for preprintNREL Publication Number
- NREL/CP-5K00-79278
Keywords
- backtracking
- computational modeling
- mathematical model
- production
- standards
- sun
- temperature measurement