US 12,316,129 B1
Adaptive control electromagnetic induction energy harvesting method and system for a power transmission line
Bing He, Shanghai (CN); Lingjing Hu, Shanghai (CN); Xing Miao, Shanghai (CN); Ming Zhang, Shanghai (CN); Bin Xu, Shanghai (CN); Jiaying Mao, Shanghai (CN); Wei Zhang, Shanghai (CN); Weijun Chen, Shanghai (CN); Yiming Fan, Shanghai (CN); Yuhao Li, Shanghai (CN); and Yunwei Lu, Shanghai (CN)
Assigned to STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER COMPANY, Shanghai (CN)
Filed by STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER COMPANY, Shanghai (CN)
Filed on Jan. 16, 2025, as Appl. No. 19/025,805.
Application 19/025,805 is a continuation of application No. PCT/CN2024/110369, filed on Aug. 7, 2024.
Claims priority of application No. 202410346976.8 (CN), filed on Mar. 26, 2024.
Int. Cl. H02J 50/00 (2016.01); H02J 50/10 (2016.01)
CPC H02J 50/005 (2020.01) [H02J 50/001 (2020.01); H02J 50/10 (2016.02)] 13 Claims
OG exemplary drawing
 
1. An adaptive control electromagnetic induction energy harvesting method for a power transmission line, comprising:
acquiring a first electromagnetic induction electromotive force based on an electromagnetic induction energy harvesting device secured to the power transmission line, wherein the electromagnetic induction energy harvesting device comprises a magnetic core unit, a processor unit, a voltage protection unit, a filtering and rectification unit, a voltage conversion unit, an extension and retraction unit, and a coil unit, wherein the processor unit is connected to the extension and retraction unit, the filtering and rectification unit is connected to the voltage protection unit and the voltage conversion unit, the voltage protection unit is connected to the coil unit, the extension and retraction unit is secured to the magnetic core unit, the magnetic core unit is disposed in the coil unit, the processor unit is configured to transmit an extension and retraction control signal to the extension and retraction unit, and the extension and retraction unit is configured to control the magnetic core unit to perform extension or retraction in the coil unit based on the extension and retraction control signal to acquire an electromagnetic induction electromotive force;
in response to the first electromagnetic induction electromotive force being less than an operating electromagnetic induction electromotive force, controlling the electromagnetic induction energy harvesting device to adaptively control the magnetic core unit to perform extension or retraction in the coil unit based on the first electromagnetic induction electromotive force to obtain a second electromagnetic induction electromotive force;
performing filtering and rectification processing and voltage conversion processing on at least one of the first electromagnetic induction electromotive force or the second electromagnetic induction electromotive force to obtain an electromagnetic induction output voltage; and
performing powering processing or charging processing on an electrical device based on the electromagnetic induction output voltage.