Open AccessIntegral‐resonant control for stand‐alone voltage source inverters
Author(s) -
Lidozzi Alessandro,
Lo Calzo Giovanni,
Solero Luca,
Crescimbini Fabio
Publication year - 2014
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2013.0121
Subject(s) - control theory (sociology) , control (management) , voltage , voltage source , physics , electrical engineering , computer science , engineering , artificial intelligence
This study deals with a newly‐conceived voltage control method for three‐phase four‐leg voltage source inverters (VSIs) which are being required in autonomous power generating units devoted to supply both three‐phase and single‐phase electrical loads in four‐wire electric power distribution systems. To deal with VSI operating conditions providing three‐phase voltage supply of both unbalanced loads and non‐linear loads, an integral + resonant (I + R) voltage control structure is discussed and experimentally verified by means of a 25 kVA rated power converter prototype. It is shown that the proposed voltage control allows simplifying the overall control configuration, achieving zero‐overhead power factor regulation and fast compensation of load unbalances. Further to that, a complete current limiting strategy is described and tested under different load conditions.