Analysis of self‐oscillating switched‐mode circuit for low‐voltage energy harvesting. Issue 15 (1st July 2013)

• Record Type: Journal Article
• Authors: Chini, A.
• Is Part Of: Electronics letters. Volume 49:Issue 15(2013)
• Page Start: 955
• Page End: 957
• Publication Date: 2013-07-01
• Subjects: network topology -- transformers -- energy harvesting -- maximum power point trackers; low‐voltage energy harvesting -- self‐oscillating switched‐mode circuit topology analysis -- low‐voltage thermal energy harvesting -- circuit self‐start‐up function -- high‐efficiency power transfer -- transformer -- MPPT tracking circuit -- relatively broad input voltage range; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2013.1372
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : 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 .