Design of Magnetic Energy Harvesters Equipped With Series AC-Side Capacitor for Attaining Maximum Power

Alon Kuperman

doi:10.1002/cta.70176

Design of Magnetic Energy Harvesters Equipped With Series AC-Side Capacitor for Attaining Maximum Power

Alon Kuperman

School of Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The letter concerns a clamped-type magnetic energy harvester (MEH) equipped with an AC-side series-connected capacitor, powering a constant-voltage-type load (CVL) via a diode rectifier. It was recently shown that introducing a series-connected capacitor to a passive MEH enlarges harvested power due to the possibility of increasing the load voltage without aggregating the amount of volt-seconds applied to the core. Yet, the capacitance value needs to be primary current dependent. This brief provides analytical guidelines for designing an AC-side capacitor-equipped MEH for driving a given CVL with maximum attainable power. Experimental results of a MEH capable of harvesting 310 W from a conductor carrying 350 A_RMS, 50 Hz current while driving a 70 V CVL are given to validate the proposed design process. Trial Registration: Irrelevant.

Original language	English
Pages (from-to)	7382-7389
Number of pages	8
Journal	International Journal of Circuit Theory and Applications
Volume	53
Issue number	12
DOIs	https://doi.org/10.1002/cta.70176
State	Published - 1 Dec 2025

Keywords

magnetic core
magnetic energy harvester
saturation
series-connected capacitor

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

Access to Document

10.1002/cta.70176

Cite this

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title = "Design of Magnetic Energy Harvesters Equipped With Series AC-Side Capacitor for Attaining Maximum Power",

abstract = "The letter concerns a clamped-type magnetic energy harvester (MEH) equipped with an AC-side series-connected capacitor, powering a constant-voltage-type load (CVL) via a diode rectifier. It was recently shown that introducing a series-connected capacitor to a passive MEH enlarges harvested power due to the possibility of increasing the load voltage without aggregating the amount of volt-seconds applied to the core. Yet, the capacitance value needs to be primary current dependent. This brief provides analytical guidelines for designing an AC-side capacitor-equipped MEH for driving a given CVL with maximum attainable power. Experimental results of a MEH capable of harvesting 310 W from a conductor carrying 350 ARMS, 50 Hz current while driving a 70 V CVL are given to validate the proposed design process. Trial Registration: Irrelevant.",

keywords = "magnetic core, magnetic energy harvester, saturation, series-connected capacitor",

author = "Alon Kuperman",

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N2 - The letter concerns a clamped-type magnetic energy harvester (MEH) equipped with an AC-side series-connected capacitor, powering a constant-voltage-type load (CVL) via a diode rectifier. It was recently shown that introducing a series-connected capacitor to a passive MEH enlarges harvested power due to the possibility of increasing the load voltage without aggregating the amount of volt-seconds applied to the core. Yet, the capacitance value needs to be primary current dependent. This brief provides analytical guidelines for designing an AC-side capacitor-equipped MEH for driving a given CVL with maximum attainable power. Experimental results of a MEH capable of harvesting 310 W from a conductor carrying 350 ARMS, 50 Hz current while driving a 70 V CVL are given to validate the proposed design process. Trial Registration: Irrelevant.

AB - The letter concerns a clamped-type magnetic energy harvester (MEH) equipped with an AC-side series-connected capacitor, powering a constant-voltage-type load (CVL) via a diode rectifier. It was recently shown that introducing a series-connected capacitor to a passive MEH enlarges harvested power due to the possibility of increasing the load voltage without aggregating the amount of volt-seconds applied to the core. Yet, the capacitance value needs to be primary current dependent. This brief provides analytical guidelines for designing an AC-side capacitor-equipped MEH for driving a given CVL with maximum attainable power. Experimental results of a MEH capable of harvesting 310 W from a conductor carrying 350 ARMS, 50 Hz current while driving a 70 V CVL are given to validate the proposed design process. Trial Registration: Irrelevant.

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KW - saturation

KW - series-connected capacitor

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IS - 12

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Design of Magnetic Energy Harvesters Equipped With Series AC-Side Capacitor for Attaining Maximum Power

Abstract

Keywords

ASJC Scopus subject areas

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