Open AccessGeneralised optimised design of single‐resonant AC current regulators
Author(s) -
Elkayam M.,
Kuperman A.
Publication year - 2019
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2019.0769
Subject(s) - phase margin , control theory (sociology) , robustness (evolution) , a priori and a posteriori , converters , frequency domain , frequency response , bandwidth (computing) , switching frequency , mathematics , electronic engineering , computer science , topology (electrical circuits) , engineering , voltage , telecommunications , operational amplifier , electrical engineering , mathematical analysis , amplifier , biochemistry , chemistry , philosophy , control (management) , epistemology , artificial intelligence , combinatorics , gene
This Letter generalises frequency‐domain oriented design guidelines for optimised single‐resonant three‐parameter AC current regulators for grid‐connected converters. Unlike in previously established set of design guidelines, possible practical restrictions imposed by relatively low‐switching frequency are taken into account in the proposed methodology. In addition, resonant term bandwidth is selected according to the desired robustness to fundamental frequency variations. As a result, a closed set of three non‐linear equations is created. The solution maximises the loop gain crossover frequency for a given phase margin while respecting frequency robustness and resonant gain restrictions, set a priori.