| Summary: | Estimation of single-diode and two-diode solar cell parameters by using chaotic optimization approach (COA) is addressed. The proposed approach is based on the use of experimentally determined current-voltage (<i>I-V</i>) characteristics. It outperforms a large number of other techniques in terms of average error between the measured and the estimated <i>I-V</i> values, as well as of time complexity. Implementation of the proposed approach on the <i>I-V</i> curves measured in laboratory environment for different values of solar irradiation and temperature prove its applicability in terms of accuracy, effectiveness and the ease of implementation for a wide range of practical environment conditions. The COA-based parameter estimation is, therefore, useful for PV power converter designers who require fast and accurate model for PV cell/module.
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