The Study of a Magnetostrictive-Based Shading Detection Method and Device for the Photovoltaic System

When the photovoltaic (PV) system suffers shading problems caused by different degrees and areas, shaded PV cells will consume electricity generate heat, corresponding bypass diode operating at a certain current conduct, special magnetic field be generated in space. In this study, magnetostrictive-based detection method device for are developed from theoretical, simulation, physical experimental aspects. This study aims to detect using magnetostrictive material with response pattern under locate problem of each module system. Theoretically, analysis is carried out on–off situation diodes modules conditions mechanism materials action field. During finite element simulations performed series coil, structural parameters coil designed based on simulation results. After establishing validation idea platform built steps designed. Finally, feasibility proposed verified, range calculated, minimum spacing adjacent coils determined validation. provides novel method, as well theoretical basis, identifying localizing problems, discusses level.