Enhanced model of photovoltaic cell/panel/array considering the direct and reverse modes

Abstract

Abstract. This paper presents an improved generalized physical model for photovoltaic, PV cells, panels and arrays taking into account the behavior of these devices when considering their biasing existing in direct and reverse modes. Existing PV physical models generally are very efficient for simulating influence of irradiation changes on the short circuit current but they could not visualize the influences of temperature changes. The Enhanced Direct and Reverse Mode model, named EDRM model, enlightens the influence on the short-circuit current of both temperature and irradiation in the reverse mode of the considered PV devices. Due to its easy implementation, the proposed model can be a useful power tool for the development of new photovoltaic systems taking into account and in a more exhaustive manner, environmental conditions. The developed model was tested on a marketed PV panel and it gives a satisfactory results compared with parameters given in the manufacturer datasheet.

Analysis of Electrical Models for Photovoltaic Cells under Uniform and Partial Shading Conditions

“…Although the Bishop model is one of the most cited and used models to represent a PV cell operating under partial shading conditions [3,[24][25][26], there is not a clear procedure to estimate its parameters; instead, authors typically use parameters already reported in the literature. A similar situation occurs for the DRM [27]. Given the importance of having an accurate model for PV power generation analysis under partial shading conditions, there is a need for procedures to identify the parameters of the models.…”

“…The Direct-Reverse Model (DRM) makes it possible to model the behavior of PV cells in both direct and reverse polarization modes. Using the I-V characteristics from the same sorted series cells, the authors of [27,30,31] studied the variability of the curves, not only in the value of the breakdown voltage but also in the slopes of the ohmic regions in Q 2 . Based on this characterization, they were able to observe parts of the curve in Q 2 that could be linearized.…”