Knowing the health of a system allows to guarante its efficiency and sustainability. The state observer is one of several techniques used by authors to estimate system state. This paper focuses on the problem of simultaneous states estimation of DC (Direct Current) and AC (Alternating Current) sides of a single-phase Photovoltaic (PV) grid-connected operating under the Sudanese-Sahelian climate of Cameroon. A generalized extended state observer (GESO) has been designed to simultaneously estimate the three states and the three disturbances of the system. A good estimation of the state and disturbances is achieved by the appropriate choice of the observer gain and the disturbance compensation gain resulting from the correct pole placement. The GESO robustness has been tested by varying the PV voltage and grid voltage. When there are no input fluctuations, the estimation errors of nominal states and disturbances converge to zero. The fluctuation in PV voltage resulting from partial shading has a significant impact on the boost converter current. The boost converter current varies proportionally with the drop in voltage due to partial shading from 55% to 59%. Under the grid voltage fluctuation, the boost converter current remains stable while the DC bus voltage and inverter current are significantly affected. The proposed GESO prove its robustness to perturbations from the PV array and grid side into the Single-Phase PV Grid-connected System. This paper contributes to the study of observers applied to the PV system and points the way to future work on diagnosing faults in PV systems operating in Cameroon's Sudanese-Sahelian climate.
| Published in | International Journal of Energy and Power Engineering (Volume 13, Issue 5) |
| DOI | 10.11648/j.ijepe.20241305.11 |
| Page(s) | 73-96 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2024. Published by Science Publishing Group |
Generalized Extended State Observer, Active Disturbance Rejection Control, PV Grid-Connected System, Sudanese-Sahelian Climate, Cameroon
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APA Style
Yaouba, Ayang, A., Tom, A., Djongyang, N. (2024). Adaptive Generalized Extended State Observer for a Single Phase PV Grid-connected System Operating Under the Sudanese-Sahelian Climate of Cameroon. International Journal of Energy and Power Engineering, 13(5), 73-96. https://doi.org/10.11648/j.ijepe.20241305.11
ACS Style
Yaouba; Ayang, A.; Tom, A.; Djongyang, N. Adaptive Generalized Extended State Observer for a Single Phase PV Grid-connected System Operating Under the Sudanese-Sahelian Climate of Cameroon. Int. J. Energy Power Eng. 2024, 13(5), 73-96. doi: 10.11648/j.ijepe.20241305.11
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Download@article{10.11648/j.ijepe.20241305.11,
author = {Yaouba and Albert Ayang and Ahmat Tom and Noël Djongyang},
title = {Adaptive Generalized Extended State Observer for a Single Phase PV Grid-connected System Operating Under the Sudanese-Sahelian Climate of Cameroon
},
journal = {International Journal of Energy and Power Engineering},
volume = {13},
number = {5},
pages = {73-96},
doi = {10.11648/j.ijepe.20241305.11},
url = {https://doi.org/10.11648/j.ijepe.20241305.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijepe.20241305.11},
abstract = {Knowing the health of a system allows to guarante its efficiency and sustainability. The state observer is one of several techniques used by authors to estimate system state. This paper focuses on the problem of simultaneous states estimation of DC (Direct Current) and AC (Alternating Current) sides of a single-phase Photovoltaic (PV) grid-connected operating under the Sudanese-Sahelian climate of Cameroon. A generalized extended state observer (GESO) has been designed to simultaneously estimate the three states and the three disturbances of the system. A good estimation of the state and disturbances is achieved by the appropriate choice of the observer gain and the disturbance compensation gain resulting from the correct pole placement. The GESO robustness has been tested by varying the PV voltage and grid voltage. When there are no input fluctuations, the estimation errors of nominal states and disturbances converge to zero. The fluctuation in PV voltage resulting from partial shading has a significant impact on the boost converter current. The boost converter current varies proportionally with the drop in voltage due to partial shading from 55% to 59%. Under the grid voltage fluctuation, the boost converter current remains stable while the DC bus voltage and inverter current are significantly affected. The proposed GESO prove its robustness to perturbations from the PV array and grid side into the Single-Phase PV Grid-connected System. This paper contributes to the study of observers applied to the PV system and points the way to future work on diagnosing faults in PV systems operating in Cameroon's Sudanese-Sahelian climate.
},
year = {2024}
}
TY - JOUR T1 - Adaptive Generalized Extended State Observer for a Single Phase PV Grid-connected System Operating Under the Sudanese-Sahelian Climate of Cameroon AU - Yaouba AU - Albert Ayang AU - Ahmat Tom AU - Noël Djongyang Y1 - 2024/11/11 PY - 2024 N1 - https://doi.org/10.11648/j.ijepe.20241305.11 DO - 10.11648/j.ijepe.20241305.11 T2 - International Journal of Energy and Power Engineering JF - International Journal of Energy and Power Engineering JO - International Journal of Energy and Power Engineering SP - 73 EP - 96 PB - Science Publishing Group SN - 2326-960X UR - https://doi.org/10.11648/j.ijepe.20241305.11 AB - Knowing the health of a system allows to guarante its efficiency and sustainability. The state observer is one of several techniques used by authors to estimate system state. This paper focuses on the problem of simultaneous states estimation of DC (Direct Current) and AC (Alternating Current) sides of a single-phase Photovoltaic (PV) grid-connected operating under the Sudanese-Sahelian climate of Cameroon. A generalized extended state observer (GESO) has been designed to simultaneously estimate the three states and the three disturbances of the system. A good estimation of the state and disturbances is achieved by the appropriate choice of the observer gain and the disturbance compensation gain resulting from the correct pole placement. The GESO robustness has been tested by varying the PV voltage and grid voltage. When there are no input fluctuations, the estimation errors of nominal states and disturbances converge to zero. The fluctuation in PV voltage resulting from partial shading has a significant impact on the boost converter current. The boost converter current varies proportionally with the drop in voltage due to partial shading from 55% to 59%. Under the grid voltage fluctuation, the boost converter current remains stable while the DC bus voltage and inverter current are significantly affected. The proposed GESO prove its robustness to perturbations from the PV array and grid side into the Single-Phase PV Grid-connected System. This paper contributes to the study of observers applied to the PV system and points the way to future work on diagnosing faults in PV systems operating in Cameroon's Sudanese-Sahelian climate. VL - 13 IS - 5 ER -
Department of Renewable Energy, National Advance School of Engineering of Maroua, University of Maroua, Maroua, Cameroon; Research Centre for Renewable Energy, Institute of Geological and Mining Research, Yaoundé, Cameroon
Department of Renewable Energy, National Advance School of Engineering of Maroua, University of Maroua, Maroua, Cameroon
Department of Energy Engineering, University Institute of Technology, University of Ngaoundéré, Ngaoundéré, Cameroon
Department of Renewable Energy, National Advance School of Engineering of Maroua, University of Maroua, Maroua, Cameroon
