Varying percentages of full uniform shading of a PV module in a controlled environment yields linear power reduction
Partial shading of a PV module has received much attention over the past few years, as it results in uneven cell power generation, compromising a PV system performance. Full uniform shading of a PV module has not received as much attention. This article correlates the percentage of full uniform shad...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
University of Cape Town
2016-11-01
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| Series: | Journal of Energy in Southern Africa |
| Subjects: | |
| Online Access: | https://journals.assaf.org.za/jesa/article/view/1556 |
| _version_ | 1818527785574989824 |
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| author | Arthur James Swart Pierre E Hertzog |
| author_facet | Arthur James Swart Pierre E Hertzog |
| author_sort | Arthur James Swart |
| collection | DOAJ |
| description | Partial shading of a PV module has received much attention over the past few years, as it results in uneven cell power generation, compromising a PV system performance. Full uniform shading of a PV module has not received as much attention. This article correlates the percentage of full uniform shading of a given PV module within a controlled environment to its output power. The percentage of full uniform shading provided by shade nets was firstly determined. These shade nets are then used to cover a specific PV module (experimental system), while an identical PV module remains totally unshaded (control system). Increasing percentages of full uniform shading negatively affected the direct beam component in a linear way. Decreasing the light intensity falling on the PV model exhibited a linear increase in the percentage of output power reduction of the PV module. This is observed in that a shade net providing 36% of full uniform shading resulted in a 56% output power reduction, while a 63% full uniform shading net yielded 82% power reduction. These results hold a strong promise to improve current simulation modules that focus on determining the output power of a given PV array under specific environmental conditions or for specialised geographical locations. |
| first_indexed | 2024-12-11T06:40:53Z |
| format | Article |
| id | doaj.art-a365f45e171245deae64b04d63193411 |
| institution | Directory Open Access Journal |
| issn | 1021-447X 2413-3051 |
| language | English |
| last_indexed | 2024-12-11T06:40:53Z |
| publishDate | 2016-11-01 |
| publisher | University of Cape Town |
| record_format | Article |
| series | Journal of Energy in Southern Africa |
| spelling | doaj.art-a365f45e171245deae64b04d631934112022-12-22T01:17:14ZengUniversity of Cape TownJournal of Energy in Southern Africa1021-447X2413-30512016-11-01273283810.17159/2413-3051/2016/v27i3a15561556Varying percentages of full uniform shading of a PV module in a controlled environment yields linear power reductionArthur James Swart0Pierre E Hertzog1Central University of TechnologyCentral University of TechnologyPartial shading of a PV module has received much attention over the past few years, as it results in uneven cell power generation, compromising a PV system performance. Full uniform shading of a PV module has not received as much attention. This article correlates the percentage of full uniform shading of a given PV module within a controlled environment to its output power. The percentage of full uniform shading provided by shade nets was firstly determined. These shade nets are then used to cover a specific PV module (experimental system), while an identical PV module remains totally unshaded (control system). Increasing percentages of full uniform shading negatively affected the direct beam component in a linear way. Decreasing the light intensity falling on the PV model exhibited a linear increase in the percentage of output power reduction of the PV module. This is observed in that a shade net providing 36% of full uniform shading resulted in a 56% output power reduction, while a 63% full uniform shading net yielded 82% power reduction. These results hold a strong promise to improve current simulation modules that focus on determining the output power of a given PV array under specific environmental conditions or for specialised geographical locations.https://journals.assaf.org.za/jesa/article/view/1556partial shadingPV simulationshade net |
| spellingShingle | Arthur James Swart Pierre E Hertzog Varying percentages of full uniform shading of a PV module in a controlled environment yields linear power reduction Journal of Energy in Southern Africa partial shading PV simulation shade net |
| title | Varying percentages of full uniform shading of a PV module in a controlled environment yields linear power reduction |
| title_full | Varying percentages of full uniform shading of a PV module in a controlled environment yields linear power reduction |
| title_fullStr | Varying percentages of full uniform shading of a PV module in a controlled environment yields linear power reduction |
| title_full_unstemmed | Varying percentages of full uniform shading of a PV module in a controlled environment yields linear power reduction |
| title_short | Varying percentages of full uniform shading of a PV module in a controlled environment yields linear power reduction |
| title_sort | varying percentages of full uniform shading of a pv module in a controlled environment yields linear power reduction |
| topic | partial shading PV simulation shade net |
| url | https://journals.assaf.org.za/jesa/article/view/1556 |
| work_keys_str_mv | AT arthurjamesswart varyingpercentagesoffulluniformshadingofapvmoduleinacontrolledenvironmentyieldslinearpowerreduction AT pierreehertzog varyingpercentagesoffulluniformshadingofapvmoduleinacontrolledenvironmentyieldslinearpowerreduction |