EQUIVALENT ELECTRIC CIRCUIT OF A BIFACIAL SOLAR CELL IN TRANSIENT STATE UNDER CONSTANT MAGNETIC FIELD

摘要

The bifacial cell with an n~+-p-p~+ structure and under constant magnetic field is placed in a fast-switch-interrupted circuit and submitted to a constant multispectral illumination. The transient decay occurs between two steady states through operating points depending on two variables resistors; this allows us to obtain a transient decay at any operating point of the I-V curve of the solar cell, from the short circuit to the open one. To perform the simulation with Matlab Simulink, the bifacial cell has been replaced by an equivalent electrical circuit and the influence of the magnetic field on the transient photocurrent has been studied. Three illumination modes have been considered here: the front illumination, the back-side illumination and the simultaneous illumination of both front and back-side of the bifacial solar cell.These simulations lead to an equivalent circuit of the bifacial cell in transient state assuming that the photocurrent is the diffused.