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| 1 | +Title: PV Electric Mismatch in Silicon-Cell PV - Part 2 |
| 2 | +Date: 2024-08-23 01:10 |
| 3 | +Category: Solar |
| 4 | +Tags: solar, modeling, code |
| 5 | +Authors: Mark Mikofski |
| 6 | +Summary: What happens when shade cuts across PV strings? |
| 7 | + |
| 8 | +# The many shades of PV electrical mismatch |
1 | 9 | Effects from shade are complicated, but can be summarized in two orthogonal categories: |
2 | 10 |
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3 | 11 | 1. shade across all modules parallel to strings |
4 | 12 | 2. shade across few modules perpendicular to strings |
5 | 13 |
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| 14 | +These categories were defined in the Fast Shade Model [1, 2] developed by Dr. |
| 15 | +Bennet Meyers after simulating hundreds of different shade patterns and grouping |
| 16 | +them by their electrical mismatch. |
| 17 | + |
6 | 18 | ## shade parallel to rows |
7 | 19 | Row-to-row shade in fixed-tilt systems, typically in winter, is an example of |
8 | 20 | shade across all modules that is parallel to strings. When I originally wrote |
@@ -43,4 +55,7 @@ perpendicular to the rows. |
43 | 55 | bypass diodes activate in the shaded submodules, and the other modules operate |
44 | 56 | at higher voltage to match the voltage of unshaded parallel strings. |
45 | 57 |
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46 | | -01234567890123456789012345678901234567890123456789012345678901234567890123456789 |
| 58 | +## References |
| 59 | + |
| 60 | +1. Meyers, B., Mikofski, M. A., & Anderson, M. (2016). A Fast Parameterized Model for Predicting PV System Performance under Partial Shade Conditions. In IEEE (Ed.), 2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC) (pp. 3173–3178). IEEE. https://doi.org/10.1109/PVSC.2016.7750251 |
| 61 | +2. Meyers, B., & Mikofski, M. A. (2017). Accurate Modeling of Partially Shaded PV Arrays. In IEEE (Ed.), 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC) (Vols. 2017-June, pp. 3354–3359). IEEE. https://doi.org/10.1109/PVSC.2017.8521559 |
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