Solar cell model: a bond graph approach

Abstract

A solar cell model that combines the photovoltaic and electro-thermal processes is proposed. The bond graph methodology is used as a reference frame, allowing the representation of the whole structure in a unified approach. The solar cell structure is modeled as a three-dimensional object allowing observation of a nonuniform solar radiation on the surface. Subsequently, the proposed model is used in the solar cell design.

Bond graph based control of a solar array

“…This discussion will be presented in Section 6. It is important to mention that in the block diagram of Figure 11, the R andL elements correspond to the R fi andL fi , respectively, from Equations (9) and (10), and they are considered to have the same numerical value.…”

“…6 Different models for the solar cell in the bond graph have been developed. [7][8][9][10] In the first of these three references, the model is basically the same. It is developed from the equivalent electrical circuit of a solar cell, and in each of these cases the causality problem is solved from a different perspective.…”

“…This is because it is not required to have a very detailed model Facultad de Ingeniería Eléctrica, Universidad Michoacana de San Nicolás de Hidalgo, México of the solar array, since this contribution is focused in the control part of the completed system. However, a more detailed model can be considered, as the presented by Tapia Sánchez and colleagues, 10 which can be a good alternative when the shadow effect is considered. 11 On the other hand, the bond graph model of a three-phase inverter has been addressed before.…”

“…It is developed from the equivalent electrical circuit of a solar cell, and in each of these cases the causality problem is solved from a different perspective. In Tapia Sánchez and colleagues’ paper, 10 a more complete bond graph model is presented, and the physical structure of the solar cell is developed, including the thermal part.…”