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        "author": "Tadatoshi Takahashi",
        "author_email": "tadatoshi@gmail.com",
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        "classifiers": [
            "Development Status :: 3 - Alpha",
            "Intended Audience :: Developers",
            "License :: OSI Approved :: MIT License",
            "Programming Language :: Python :: 3.4",
            "Programming Language :: Python :: 3.5",
            "Topic :: Scientific/Engineering"
        ],
        "description": "# PhotovoltaicModelingPython\n\nCalculates the parameters that are not available in the datasheet of photovoltaic modules. In order to do so, equations derived from the diode model are used. Due to the complexity of the equations, numerical method is used to get the parameters.\n\nAlso calculates the values for I-V curve and P-V curve based on single diode model. Can draw I-V curve and P-V curve graphs as well.\n\n## Installation\n\n#### Required packages\n\n* numpy\n\n* scipy\n\nAutomatically installed when this package is installed.\n\n#### Installation instruction\n\nUse ``pip3``:\n\n```\npip3 install photovoltaic_modeling\n```\n\n## Supported Platforms\n\n* Python 3.5.\n\nIt's not tested on Python 2.6 or 2.7 yet.\n\n### Assumptions\n\n* Unit of temperature voltage coefficient: [V/\u00baC] not [%/\u00baC].\n\n    Different datasheets use different unit (either one of these units). If it's given in [%/\u00baC] in datasheet, make sure to convert it to [V/\u00baC].\n\n* Unit of temperature current coefficient: [A/\u00baC] not [%/\u00baC].\n\n    Different datasheets use different unit (either one of these units). If it's given in [%/\u00baC] in datasheet, make sure to convert it to [A/\u00baC].\n\n* Definition of thermal voltage:\n\n    ```\n        Vt = (AkT) / q\n\n        where, Vt: Thermal voltage, A: Diode quality factor, k: Boltzmann constant, T: Temperature at Standard Test Condition (STC),  q: charge of electron\n    ```\n    This is the definition from reference [1]\n\n    Some literatures use\n    ```\n        Vt = (nkT) / q\n\n        where, n: number of cells in series\n    ```\n    For example, reference [2]\n\n    But this project uses the first definition above and all the equations are adjusted accordingly.\n\n## Usage\n\n### Code\n\n1. Parameter Extraction\n\n    Example:\n\n    ```\n    from photovoltaic_modeling.parameter.parameter_extraction import ParameterExtraction\n\n    short_circuit_current = 3.87\n    open_circuit_voltage = 42.1\n    maximum_power_point_current = 3.56\n    maximum_power_point_voltage = 33.7\n    number_of_cells_in_series = 72\n\n    parameter_extraction = ParameterExtraction(short_circuit_current, open_circuit_voltage,\n                                               maximum_power_point_current, maximum_power_point_voltage,\n                                               number_of_cells_in_series = number_of_cells_in_series)\n\n    series_resistance_estimate = 1\n    shunt_resistance_estimate = 1000\n    diode_quality_factor_estimate = 1\n\n    parameter_estimates = [series_resistance_estimate, shunt_resistance_estimate, diode_quality_factor_estimate]\n    parameter_extraction.calculate(parameter_estimates)\n\n    print('series_resistance=', parameter_extraction.series_resistance)\n    print('shunt_resistance=', parameter_extraction.shunt_resistance)\n    print('diode_quality_factor=', parameter_extraction.diode_quality_factor)\n    ```\n\n2. Single diode model\n\n    Note: Use series_resistance, shunt_resistance, and diode_quality_factor obtained by \"1. Parameter Extraction\" above.\n\n    Example:\n\n    ```\n    from photovoltaic_modeling.diode_model.single_diode_model import SingleDiodeModel\n    import matplotlib.pyplot as pyplot\n    import photovoltaic_modeling.diode_model.report_helper as report_helper\n\n    short_circuit_current = 5.75\n    open_circuit_voltage = 22.5\n    temperature_current_coefficient = 0.04\n    series_resistance = 0.115820201147\n    shunt_resistance = 37173.5612907\n    diode_quality_factor = 1.27873896365\n\n    number_of_series_connected_cells = 36\n\n    number_of_voltage_decimal_digits = 1\n\n    single_diode_model = SingleDiodeModel(short_circuit_current,\n                                          open_circuit_voltage,\n                                          number_of_series_connected_cells,\n                                          number_of_voltage_decimal_digits = number_of_voltage_decimal_digits,\n                                          temperature_current_coefficient = temperature_current_coefficient,\n                                          series_resistance = series_resistance,\n                                          shunt_resistance = shunt_resistance,\n                                          diode_quality_factor = diode_quality_factor)\n\n    operating_temperature = 35 + 273\n    actual_irradiance = 1000\n\n    single_diode_model.calculate(operating_temperature,\n                                 actual_irradiance)\n\n    voltages = single_diode_model.voltages\n    currents = single_diode_model.currents\n    powers = single_diode_model.powers\n\n    report_helper.write_result_to_csv_file(single_diode_model, 'single_diode_model_rng-100d_one_module_no_shading')\n    report_helper.plot_result(single_diode_model)\n    ```\n\n### Command line execution\n\n1. Parameter Extraction:\n\n    Example:\n\n    ```\n    $ photovoltaic_modeling parameter_extraction --short_circuit_current 3.87 --open_circuit_voltage 42.1 --maximum_power_point_current 3.56 --maximum_power_point_voltage 33.7 --number_of_cells_in_series 72\n    ```\n\n## Development\n\n\n\n## Contributing\n\nBug reports and pull requests are welcome on GitHub at https://github.com/tadatoshi/photovoltaic_modeling_python. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [Contributor Covenant](contributor-covenant.org) code of conduct.\n\n## License\n\nThe project is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).\n\n## References\n\n[1] D. Sera, R. Teodorescu, and P. Rodriguez, \"PV panel model based on datasheet values,\" in Industrial Electronics, 2007. ISIE 2007. IEEE International Symposium on, 2007, pp. 2392-2396.\n\n[2] M. G. Villalva and J. R. Gazoli, \u201dComprehensive approach to modeling and simulation of photovoltaic arrays,\u201d Power Electronics, IEEE Trans- actions on, vol. 24, pp. 1198-1208, 2009.\n\n[3] A. Bellini, S. Bifaretti, V. Iacovone, and C. Cornaro, \u201dSimplified model of a photovoltaic module,\u201d in Applied Electronics, 2009. AE 2009, 2009, pp. 47-51.",
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