公开(公告)号：US20240213921A1

公开(公告)日：2024-06-27

申请号：US18087769

申请日：2022-12-22

Applicant: POSTECH Research and Business Development Foundation

Inventor： Young Jin KIM ,  Ji Hun HA ,  Ram Jothikumar PRASANTH

IPC: H02S50/10 ,  G05F1/67

CPC classification number: H02S50/10 ,  G05F1/67

Abstract: Disclosed are a shade detection and global maximum power point tracking method and apparatus for photovoltaic power conversion. The method comprises: setting an array voltage at a first duty and an array current at a second duty among data sheet values of a PV array of a PV module as a reference array voltage and a reference array current, respectively; calculating a MPP resistance of the PV array based thereon; calculating a duty to be applied to a switch of a boost converter of the PV module based on the MPP resistance; obtaining an actual array voltage and an actual array current of the PV array based on the duty; and determining whether a uniform shade case occurs based on the actual array voltage, the actual array current, and actual power.