公开(公告)号：US11177732B1

公开(公告)日：2021-11-16

申请号：US17013175

申请日：2020-09-04

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Zhendong Zhang ,  Rob Miklosovic ,  Ahmed Mohamed Sayed Ahmed

IPC: H02M1/12 ,  H02M7/5387 ,  H02M1/00

Abstract: A component includes an adaptive estimator. A converter includes a switching rectifier connected to an LCL filter with a converter inductor, a capacitor, and grid inductor connected to a voltage source through a conductor with unknown inductance. Current of the converter inductor is input to the adaptive estimator which includes an ideal LCL filter model that generates, using a simple filter, a desired dynamic behavior of the converter and LCL filter and a disturbance compensator. An LCL steady-state (“SS”) compensation models a steady-state effect of the LCL filter and conductor. Output of the adaptive estimator is subtracted from output of the LCL SS compensation to form a disturbance estimate, which is summed with a feedback loop output of the converter to form a voltage control signal that controls switching of the switching rectifier. The voltage control signal is summed with the disturbance estimate and is input to the adaptive estimator.