Low-grade waste vibration energy recovery from hong kong franchised buses

Mau Hing CHAN*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Vibration characterization in moving franchised buses has been performed. Considering the frequency spectrum of vertical acceleration, two distinct vibration peaks at 2.2 and 14 Hz were observed. The root-mean-square acceleration peak values were 5.59×10-6 and 1.95×10 -6 g2/Hz, where g is the acceleration due to gravity. Based on the experimental results of vibration frequency characteristics, a conventional piezoelectric cantilever energy harvester with natural frequency tuned at 14 Hz was constructed. This paper presents the application of piezoelectric energy harvester to obtain the low-grade waste vibration energy from Hong Kong franchised buses. Ten different bus routes were selected for the energy harvesting. On average, statistical data showed that for buses traveling from one terminus to another, by using the cantilever piezoelectric energy harvesting technique, the feasible power generated from bus vibration was around 90 μW.

Original languageEnglish
Pages (from-to)431-437
Number of pages7
JournalInternational Journal of Green Energy
Volume11
Issue number4
DOIs
Publication statusPublished - 21 Apr 2014

Scopus Subject Areas

  • Renewable Energy, Sustainability and the Environment

User-Defined Keywords

  • Hong Kong
  • Piezoelectric cantilever
  • Piezoelectric energy harvesting
  • Vibration frequency characterization of motor vehicles
  • Vibration-to-electric energy conversion

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