Title
Intersample Modeling of the Converter Output Admittance
Abstract
The stability of the converter-grid interconnection can be studied by analyzing the product of the converter output admittance and the grid impedance. For reliable stability analysis, it has been of interest to obtain accurate converter output admittance models for a wide range of frequencies, ideally also around and above the Nyquist frequency of the converter system. This article presents a modeling method for the output admittance of power converters defined in the Laplace domain that takes into account the discrete nature of the control system. The modeling method is based on analyzing the intersample behavior of sampled-data systems, a class of systems that includes the modern digitally controlled power converters. The proposed method is compared to conventional admittance modeling methods, and its accuracy is validated by means of simulations and experiments.
Year
DOI
Venue
2021
10.1109/TIE.2020.3029482
IEEE Transactions on Industrial Electronics
Keywords
DocType
Volume
Admittance modeling,Nyquist frequency,power converter,sampled-data system
Journal
68
Issue
ISSN
Citations 
11
0278-0046
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Ville Pirsto101.01
Jarno Kukkola201.01
marko hinkkanen311822.33
Lennart Harnefors418929.20