Open AccessSmall‐signal‐based study of a two stage AC/DC and DC/DC battery charger using battery one time constant model
Author(s) -
Hajisadeghian Hossein,
Motie Birjandi Ali Akbar,
Asadi Mehdi,
Vazini Hossein
Publication year - 2020
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.2020.0877
Subject(s) - control theory (sociology) , total harmonic distortion , battery (electricity) , battery charger , converters , signal (programming language) , voltage , constant (computer programming) , power (physics) , computer science , controller (irrigation) , constant current , small signal model , constant voltage , distortion (music) , electronic engineering , electrical engineering , engineering , physics , control (management) , quantum mechanics , programming language , amplifier , agronomy , cmos , artificial intelligence , biology
This study focuses on considering battery one time constant model in the design of controllers of a two‐stage AC/DC and DC/DC battery charger using the small‐signal approach. For this aim, small‐signal models of DC/DC and AC/DC converters and also the battery model are obtained. Moreover, the effect of disturbance terms are analysed to be omitted in controller loops. Simulation and experimental results of a 1 kW laboratory prototype show appropriate performance of designed controllers in tracking reference signals. Also, tuned controllers using this approach have guaranteed unity power factor and low total harmonic distortion. Furthermore, a complete charge cycle of a lithium‐ion battery evaluates the performance of the converter in different constant current/voltage controlling modes. In comparison with restive model consideration, results show a more accurate model with grater damping ration and better stability characteristics.