Open AccessAsymmetrical transformer‐based embedded Z ‐source inverters
Author(s) -
Wei Mo,
Chiang Loh Poh,
Blaabjerg Frede
Publication year - 2013
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.2012.0460
Subject(s) - transformer , inverter , topology (electrical circuits) , network topology , voltage , electronic engineering , computer science , voltage source , control theory (sociology) , electrical engineering , engineering , control (management) , artificial intelligence , operating system
Z ‐source inverters are inverters with buck–boost capability that traditional inverters cannot match. Despite this ability, present Z ‐source topologies are burdened by some limitations such as chopping input current, high‐voltage stress and poor spectral performance at high gain. To improve their performances, a number of asymmetrical transformer‐based embedded Z ‐source inverters are proposed. Through theoretical derivation and experiments, the proposed inverters have been shown to draw a smooth input current and produce a high gain by varying the transformer turns ratio n . The range of variation for n depends on the inverter topology chosen, which in turn depends on the application under consideration.