Output Characteristics of Passive Magnetic Energy Harvester Feeding a Constant-Voltage-Type Load

Alexander Abramovitz; Moshe Shvartsas; Georgios I. Orfanoudakis; Alon Kuperman

doi:10.1109/JESTPE.2024.3476284

Output Characteristics of Passive Magnetic Energy Harvester Feeding a Constant-Voltage-Type Load

Alexander Abramovitz, Moshe Shvartsas, Georgios I. Orfanoudakis, Alon Kuperman

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

7 Scopus citations

Abstract

This article provides a methodology for deriving a family of output characteristics (dc-side I–V and P–V curves) for a passive magnetic energy harvester (MEH) clamped on a sinusoidal current-carrying conductor. It is demonstrated that MEH characteristics depend on primary current magnitude and frequency as well as on load voltage. First, expressions for power harvested by an MEH are derived employing a nonlinear B–H curve approximation of the core. Then, conversion losses are assessed to provide respective estimates for the power provided by the MEH to the load. Presented analytical findings are accurately supported by experimental results of MEH designed to harvest up to 240 W from a conductor carrying currents of up to 350 A.

Original language	English
Pages (from-to)	2966-2974
Number of pages	9
Journal	IEEE Journal of Emerging and Selected Topics in Power Electronics
Volume	13
Issue number	3
DOIs	https://doi.org/10.1109/JESTPE.2024.3476284
State	Published - 1 Jan 2025

Keywords

Magnetic energy harvester (MEH)
maximum power point matching
optimal load
saturation

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1109/JESTPE.2024.3476284

Cite this

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title = "Output Characteristics of Passive Magnetic Energy Harvester Feeding a Constant-Voltage-Type Load",

abstract = "This article provides a methodology for deriving a family of output characteristics (dc-side I–V and P–V curves) for a passive magnetic energy harvester (MEH) clamped on a sinusoidal current-carrying conductor. It is demonstrated that MEH characteristics depend on primary current magnitude and frequency as well as on load voltage. First, expressions for power harvested by an MEH are derived employing a nonlinear B–H curve approximation of the core. Then, conversion losses are assessed to provide respective estimates for the power provided by the MEH to the load. Presented analytical findings are accurately supported by experimental results of MEH designed to harvest up to 240 W from a conductor carrying currents of up to 350 A.",

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AB - This article provides a methodology for deriving a family of output characteristics (dc-side I–V and P–V curves) for a passive magnetic energy harvester (MEH) clamped on a sinusoidal current-carrying conductor. It is demonstrated that MEH characteristics depend on primary current magnitude and frequency as well as on load voltage. First, expressions for power harvested by an MEH are derived employing a nonlinear B–H curve approximation of the core. Then, conversion losses are assessed to provide respective estimates for the power provided by the MEH to the load. Presented analytical findings are accurately supported by experimental results of MEH designed to harvest up to 240 W from a conductor carrying currents of up to 350 A.

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Output Characteristics of Passive Magnetic Energy Harvester Feeding a Constant-Voltage-Type Load

Abstract

Keywords

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