Title
PRBS-based loop gain identification and output impedance shaping in DC microgrid power converters
Abstract
Due to potential dynamic interactions among dc microgrid power converters, the performance of some of their control loops can vary from the designed behavior. Thus, online monitoring of different control loops within a dc microgrid power converter is highly desirable. This paper proposes the simultaneous identification of several control loops within dc microgrid power converters, by injecting orthogonal pseudo-random binary sequences (PRBSs), and measuring all the loop gains in one measurement cycle. The identification results can be used for different purposes such as controller autotuning, impedance shaping, etc. Herein, an example of output impedance estimation and shaping based on locally-measured loop gains is presented. The proposed identification technique and its application in output impedance shaping are validated on an experimental dc microgrid prototype, composed of three droop-controlled power converters.
Year
DOI
Venue
2021
10.1016/j.matcom.2020.04.017
Mathematics and Computers in Simulation
Keywords
DocType
Volume
DC microgrid,Loop gain identification,Impedance shaping
Journal
183
ISSN
Citations 
PageRank 
0378-4754
0
0.34
References 
Authors
0
5
Name
Order
Citations
PageRank
Aram Khodamoradi100.34
Guangyuan Liu200.34
Paolo Mattavelli321035.11
Tuomas Messo402.03
Hossein Abedini500.34