Power loss calculation of Photovoltaics using Python

Abstract

The issue of electrical power losses in solar Photovoltaic modules during partial shade is discussed in this study. PV modules work more efficiently with maximum power if solar irradiation reaches the entire surface of the panel without any parts been shaded. A PV system modeling software package, PVLib, is used to calculate the power loss of PV modules from partial shading using Python coding. In-order to calculate the power loss of modules from partial shading, the current and voltage (IV) curves for individual solar photovoltaic cells should be calculated, by solving the single diode equation IV curve. Parameters of an available PV module are used. Standard Test Condition (STC) temperature and parameters are used in the calculations. Different Python libraries and packages are used and imported in this report. Brief introduction to the background of each library is introduced, steps of adding an external package to Python are also mentioned.

Keywords

• PV cell
• Python
• Renewable energy
• Solar panel

References

1. [1] Ransome , S., Stein, J., Holmgren, W., Sutterlueti, J., Pvpmc, T., & Performance, P. V. Pv Performance Modelling With Pvpmc/Pvlıb Introduction to Pvpmc/Pvlib Why Do We Need The Pvpmc? Introduction To Python Pvlib - Open Source Toolbox Contributing to Pvlib Pvpmc Website Contents : Pv Performance Modelling Steps Running Pvlib Python Scri, pp. 2–5.
2. [2] Holmgren, W. F., Hansen, C. W., & Mikofski, M. A. Pvlib Python: a Python Package for Modeling Solar Energy Systems. J. Open Source Software 2018: 3(29), 884. doi: 10.21105/joss.00884.
3. [3] McKinney, W. & Team, P. D. Pandas - Powerful Python Data Analysis Toolkit. Pandas - Powerful Python Data Anal. Toolkit. 1625, 2015.
4. [4] N. Community, NumPy User Guide 1.19. 214, 2020.
5. [5] SciPy Community, SciPy Reference Guide 0.7. 1229, 2013.
6. [6] Wall, L. et al. About the Tutorial Copyright & Disclaimer. 2, 2015. doi: 10.1017/CBO9781107415324.004.
7. [7] Corless, R. M., Gonnet, G. H., Hare, D. E. G., Jeffrey, D. J., & Knuth, D. E. On the Lambert W function. Adv. Comput. Math. 1996: 5(1), 329–359. doi: 10.1007/bf02124750.
8. [8] Bishop, J. W. Computer simulation of the effects of electrical mismatches in photovoltaic cell interconnection circuits. Sol. Cells 1988: 25(1), 73–89. doi: 10.1016/0379-6787(88)90059-2.

9. [9] Izadian, A., Pourtaherian, A., & Motahari, S. Basic model and governing equation of solar cells used in power and control applications. 2012 IEEE Energy Conversion Congress and Exposition (ECCE), 2012, 1483-1488. doi: 10.1109/ECCE.2012.6342639.
10. [10] Hansen, C. Parameter Estimation for Single Diode Models of Photovoltaic Modules. 2015.
11. [11] Sado, K. A., Hassan, L. H., & Moghavvemi, M. Design of a PV-powered DC water pump system for irrigation: a case study. 2018 53rd International Universities Power Engineering Conference (UPEC), 2018, 1–6. doi: 10.1109/UPEC.2018.8542072.
12. [12] Sado, K. A. & Hassan, L. H. Modeling and Implementation of a PV-powered DC Water Pump System for Irrigation in Duhok City. Acad. J. Nawroz University 2018: 7(4). doi: 10.25007/ajnu.v7n4a294.
13. [13] Tamrakar, V., Gupta, S. C., & Sawle, Y. Single-Diode Pv Cell Modeling and Study of Characteristics of Single and Two-Diode Equivalent Circuit. Electr. Electron. Eng. An Int. J. 2015: 4, 13–24. doi: 10.14810/elelij.2015.4302.