On Low-frequency electric power generation with PZT ceramics

Stephen R. Platt, Shane M Farritor, Hani Haider

Research output: Contribution to journalArticle

223 Citations (Scopus)

Abstract

Piezoelectric materials have long been used as sensors and actuators, however their use as electrical generators is less established. A piezoelectric power generator has great potential for some remote applications such as in vivo sensors, embedded MEMS devices, and distributed networking. Such materials are capable of converting mechanical energy into electrical energy, but developing piezoelectric generators is challenging because of their poor source characteristics (high voltage, low current, high impedance) and relatively low power output. In the past these challenges have limited the development and application of piezoelectric generators, but the recent advent of extremely low power electrical and mechanical devices (e.g., MEMS) make such generators attractive. This paper presents a theoretical analysis of piezoelectric power generation that is verified with simulation and experimental results. Several important considerations in designing such generators are explored, including parameter identification, load matching, form factors, efficiency, longevity, energy conversion and energy storage. Finally, an application of this analysis is presented where electrical energy is generated inside a prototype Total Knee Replacement (TKR) implant.

Original languageEnglish (US)
Pages (from-to)240-252
Number of pages13
JournalIEEE/ASME Transactions on Mechatronics
Volume10
Issue number2
DOIs
StatePublished - Apr 1 2005

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Electric power generation
MEMS
Knee prostheses
Piezoelectric materials
Sensors
Energy conversion
Energy storage
Power generation
Identification (control systems)
Actuators
Electric potential

Keywords

  • PZT ceramics
  • Piezoelectric materials
  • Piezoelectricity
  • Power generation

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering

Cite this

On Low-frequency electric power generation with PZT ceramics. / Platt, Stephen R.; Farritor, Shane M; Haider, Hani.

In: IEEE/ASME Transactions on Mechatronics, Vol. 10, No. 2, 01.04.2005, p. 240-252.

Research output: Contribution to journalArticle

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