IV curve correction tools (IVcorrection)

This package provides the following purposes:

• Calculate IV curve correction coefficients based on IEC 60891:2021 standard
• Perform IV curve correction

An interactive page for IV curve correction is online!

The package is still under active development. If there is any problem, please feel free to contact us!

Installation

• Install with pip

pip install ivcorrection

What is I-V curve correction

I-V curve correction refers to correct the I-V curve measured under different environmental condition to an identical one. Generally, the standard test condition (STC) is adopted as the target condition.

Interactive online page

An interactive page is available: https://pvtools.lbl.gov/iv-curve-correction-tool

The video shows how to use this online page:

IV_correction_webpage_demo.mp4

Correction methods

This tool can perform I-V curve correction using Procedure 1, 2, 4 of IEC 60891:2021 [1] and a proposed Procedure dynamic. The determination of correction coefficients follow the IEC 60891:2021 standard [1].

How to use this tool

The calculation proceeds with the following steps:

• Provide PV module parameters
• Calculate correction coefficients
• Correct example I-V curve(s) (optional)

An example is provided in Example_IV_correction_CEC.ipynb.

Who we are

We are a collection of national lab researchers funded under the Durable module materials consortium (DuraMAT).

References

[1] IEC 60891, Photovoltaic devices - Procedures for temperature and irradiance corrections to measured I-V characteristics, 2021.

Authors

Baojie Li (LBNL)