A current transformer energy harvester with stable output based on the saturable magnetic core

One of the major bottlenecks of the traditional current transformer energy harvester (CTEH) is the instable output induced by the wide‐range variations of the current in transmission lines. In this work, a novel CTEH capable of generating a stable output is demonstrated by using a core fabricated wi...

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Bibliographic Details
Published in:Electronics letters 2022-08, Vol.58 (18), p.705-707
Main Authors: Cao, Jianan, Jiao, Yuanliang, Meng, Gefei, Peng, Jia, Stassi, Stefano, Pirri, Fabrizio, Li, Yunjia
Format: Article
Language:English
Subjects:
Cobalt
Electrical loads
Electrons
Energy
Energy harvesting
Magnetic cores
Magnetic materials
Maximum power
Permeability
Transformers
Transmission lines
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Summary:One of the major bottlenecks of the traditional current transformer energy harvester (CTEH) is the instable output induced by the wide‐range variations of the current in transmission lines. In this work, a novel CTEH capable of generating a stable output is demonstrated by using a core fabricated with saturable magnetic material. The stable output of the CTEH is enabled by the constant voltage‐time product in its saturable characteristic. The proposed CTEH is implemented with a resistive load representing the load of electronic devices. When the current in the primary side of the CTEH's increases from 1 to 1000 A, the maximum power on the load can reach about 0.5 W, demonstrating the feasibility of using the CTEH with the saturable magnetic core as a quasi‐stable power supply.
ISSN:0013-5194
1350-911X
DOI:10.1049/ell2.12566