公开(公告)号：US11802895B2

公开(公告)日：2023-10-31

申请号：US17625307

申请日：2021-02-22

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Ximing Sun ,  Ping Lin

IPC: G01R25/00

CPC classification number: G01R25/005

Abstract: The present invention belongs to the technical field of aviation electrics and electric power, and provides an aircraft grid phase angle tracker based on nonlinear active disturbance rejection, which is used to estimate the grid phase angle on AC side of an aircraft grid. A embedded generator in the aircraft grid is arranged inside a compressor of an aviation gas turbine engine, and the embedded generator is directly coupled with the aviation gas turbine engine so that the AC frequency of the embedded generator varies with the speed of the aviation gas turbine engine. The present invention applies the nonlinear active disturbance rejection technology to the phase angle tracking of the more electric aircraft grid, is simple in operation and high in accuracy, and can realize high-accuracy tracking of the grid phase angle. The method has certain extensibility and can be extended to other fields.