Energy Harvesting Device for HVDC Transmission Lines

ChangeBridge: Patent Apps - Power Supply (H02J)

Detected March 26th, 2026

Summary

The USPTO has published a patent application for a non-invasive energy harvesting device designed for High Voltage Direct Current (HVDC) transmission lines. The device utilizes harmonic magnetic fields to generate induced voltage without direct contact with the line.

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What changed

This document is a patent application (US20260088652A1) filed with the USPTO for an "Energy harvesting device for HVDC transmission lines." The proposed device is non-invasive, using an arc-shaped magnetic core and flux collectors to harvest energy from harmonic magnetic fields generated by the transmission line's current. It is designed to prevent magnetic core saturation from the direct current component, allowing for energy harvesting via electromagnetic induction from harmonic currents.

As this is a patent application, there are no immediate compliance obligations for regulated entities. However, companies involved in power transmission, energy technology, or related manufacturing may find the disclosed technology relevant for future development or licensing. The filing date was June 26, 2025, and the publication date is March 26, 2026.

Source document (simplified)

← USPTO Patent Applications

NON-INVASIVE HARMONIC MAGNETIC FIELD ENERGY HARVESTING DEVICE FOR HIGH VOLTAGE DIRECT CURRENT TRANSMISSION LINE

Application US20260088652A1 Kind: A1 Mar 26, 2026

Inventors

Aijun Yang, Xiaohua Wang, Zhu Liu, Likai Zheng, Siyu Bao, Jifeng Chu, Mingzhe Rong

Abstract

The present disclosure proposes a non-invasive harmonic magnetic field energy harvesting device for a high voltage direct current (HVDC) transmission line, and the device includes an arc-shaped magnetic core and flux collectors; the arc-shaped magnetic core is located at the center of the device and the flux collectors are located at both ends of the arc-shaped magnetic core, and the device is placed near the transmission line without being snapped onto the transmission line. The designed arc-shaped magnetic core is a non-closed arc-shaped magnetic core with relatively low effective permeability, which can effectively prevent saturation of the magnetic core caused by a strong direct current. When the magnetic core is unsaturated, the alternating magnetic field generated by the harmonic current will generate an induced voltage in the coil based on electromagnetic induction, thereby enabling energy harvesting.