Open AccessAnalysis of self‐oscillating switched‐mode circuit for low‐voltage energy harvesting
Author(s) -
Chini A.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2013.1372
Subject(s) - inductor , transformer , voltage , energy harvesting , electrical engineering , maximum power point tracking , control theory (sociology) , topology (electrical circuits) , electronic engineering , engineering , power (physics) , computer science , physics , control (management) , quantum mechanics , artificial intelligence , inverter
The operation of a self‐oscillating switched‐mode circuit topology for low‐voltage thermal energy harvesting is analysed and experimental efficiency results are presented. Circuit self‐start‐up function as well as high‐efficiency power transfer are obtained by using only one transformer without additional inductors. It is shown that even without using a maximum power point tracking (MPPT) tracking circuit, it is possible to achieve efficiencies up to 65% over a relatively broad input voltage range which can be optimised by properly varying the transformer turns ratio n .