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| Content Provider | IET Digital Library |
|---|---|
| Author | Mao, Zhang Sunan, Zhong Peng, Mao Yanlong, Sun Weiping, Zhang |
| Abstract | Most issue for a large-scale photovoltaic (PV) array shows an average loss of ∼20–25% in power generation yield due to partial shadow. Under partially shaded conditions, a PV array gets more complex characteristics. However, it is very difficult to understand and predict them since PV module has non-linear characteristic and it is also utterly necessary for one to extract the maximum possible power. This study presents the partial shading analysis and simulation approach to unveil the significant basic rules for estimating performances of a large-scale PV array. By using the macro-model and simplified parameter estimation formulas of the PV module proposed in part I, this study has made the following contributions: (i) basic and general shading patterns of PV string and array are proposed to unveil the basic rules, such as the count of maximum power points (MPP), magnitude of the global MPP, overall shape of V–I and V–P curves, and so on. (ii) The optimising configuration-simulation model are developed for a distributed PV system designed to optimise PV array configuration under a given shaded patterns. By using a Dell compatible personal computer to run Psim programs, it takes ∼15 minims to get the V–I and V–P curves of a partially shaded PV array with 1050 commercial PV modules. Furthermore, this study attempts to provide a simulation tool to study the behaviours of a complete PV system since the Psim-based models conveniently interface with the models of power electronic circuit. |
| Starting Page | 1316 |
| Ending Page | 1320 |
| Page Count | 5 |
| 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.2017.0542 |
| 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 | Basic General Shading Pattern Complex Characteristic Dell Compatible Personal Computer Distributed PV System Global MPP Large-scale Photovoltaic Array Large-scale PV Array Macro-model Maximum Power Point Maximum Power Point Trackers Nonlinear Characteristic Partial Shading Analysis Photoelectric Conversion Power Electronic Circuit Power Electronics Power Generation Yield Power Supply Psim Programs Psim-based Model PV Array Configuration PV Module PV String Simplified Parameter Estimation Formulas Solar Cell And Array Solar Cell Array Supervisory Circuit |
| Content Type | Text |
| Resource Type | Article |
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