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| Content Provider | IET Digital Library |
|---|---|
| Author | Mao, Zhang Sunan, Zhong Peng, Mao Yanlong, Sun Weiping, Zhang |
| Abstract | Under partially shaded conditions (PSC), a photovoltaic (PV) array gets more complex characteristics. Yet, it is very difficult and utterly necessary for PV system designers to understand and predict them. Other than the prevailing methodology of solving a set of non-linear equations, the proposed methodology focus on three key points of short circuit (0, I sc), MPP(V mp, I mp), and open circuit (V oc, 0), and splits its V–I curve into three regions, which are replaced by three asymptote lines. From this new viewpoint, this study presents a novel Psim-based piece-wise linear macro-model and its circuit parameter values can be determined based on the three key points. Parameter estimation method is then developed to calculate the values of three key points under arbitrary irradiance and temperature by using only the datasheet under the standard test condition. The new model can be used to predict PV module characteristics for various operating conditions and understand the behaviours of a long PV string and a large-scale PV array under any PSC patterns on Psim platform. Compared with the published other models, the new model have merits of short running time, relative high accurateness, and reliable unique solution, avoiding the computational complexity and convergence issues. The accurateness of new model and formulas is experimentally validated and the computational error can meet the requirement of routine engineering analysis and design. Therefore, the new model and formulas will provide a powerful tool for one to learn the behaviour of a large-scale PV array in a complex scenario and optimise entire PV power plant, which involves DC/DC converter for MPPT and DC/AC inverter. |
| Starting Page | 1295 |
| Ending Page | 1298 |
| Page Count | 4 |
| Volume Number | 2017 |
| e-ISSN | 20513305 |
| Issue Number | Issue 13, Jan (2017) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/2017/13 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2017.0538 |
| Journal | The Journal of Engineering |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2017-01-01 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
| Subject Keyword | Arbitrary Irradiance Circuit Parameter Values Complex Characteristic Computational Error DC-AC Inverter DC-AC Power Converter DC-DC Converter Invertors Large-scale PV Array Long PV String Mathematical Analysis Maximum Power Point Trackers MPPT Nonlinear Equation Open Circuit Operating Condition Optimisation Optimisation Technique Parameter Estimation Method Partial Shading Analysis Partially Shaded Condition Photovoltaic Array Photovoltaic Power System Piecewise Linear Technique Power System Parameter Estimation PSC Pattern Psim-based Piecewise Linear Macro-model PV Module Characteristic PV Power Plant Optimisation PV System Designers Routine Engineering Analysis Short Circuit Solar Cell And Array Solar Cell Array Solar Power Stations Standard Test Condition |
| Content Type | Text |
| Resource Type | Article |
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