Design and analysis of a shoe-embeded power harvester based on magnetic gear

Yulong Liu, Weinong Fu, Wei Li, Mingui Sun

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)


This paper presents a shoe-sole-embedded power harvester which can extract power from walking to charge portable or mobile electronic devices. The core component of the design is a combination of a trans-rotary magnetic gear (TRMG) and a disk-type axial-flux permanent magnet (AFPM) generator. The key idea is to convert linear foot motion into rotation using the TRMG, so that the AFPM can be driven to generate electric power. The proposed energy harvester has a high power density due to its electromagnetic nature. Moreover, by integrating a TRMG, it eliminates the mechanical problems caused by the conventional transmission mechanisms, which also makes it compact in size. Besides introducing its structure and working principle, the design procedure is presented and its performance is analyzed using the finite-element method.
Original languageEnglish
Article number7393584
JournalIEEE Transactions on Magnetics
Issue number7
Publication statusPublished - 1 Jul 2016


  • Finite element method
  • magnetic gear
  • permanent magnet
  • shoe generator

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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