• CLAUDIA SĂVESCU Romanian Research and Development Institute for Gas Turbines COMOTI, Bucharest https://orcid.org/0000-0001-9578-1222
  • DANIEL COMEAGĂ Universitatea Politehnica din Bucureşti
  • ALEXANDRU M. MOREGA Universitatea Politehnica din Bucureşti
  • YELDA VELI University Politehnica of Bucharest


Piezoelectric Harvester, Electric Response, Resonant Frequency, Forced Vibrations, Continuous Harmonic Motion


The paper deals with experimental testing of a cantilever piezoelectric harvester, aiming to obtain a preliminary assessment of the behavior that should be expected when harnessing the vibrations of a compressor. For this purpose, to exploit the resonant structure to the fullest and obtain the maximum electric response, its fundamental frequency ought to be adjusted to enter resonance at the frequency of the vibrating source. Since the natural frequency of the piezoelectric cantilever is higher than the compressor’s male rotor frequency targeted, an inertial mass was attached at the tip of the cantilever. Passive frequency control is preferred because it does not consume any energy. However, suppose the source does not have a stable frequency in a quasi-static regime. In that case, semi-active control solutions should be adopted, changing frequency from the components of an external electric circuitry connected.

Author Biographies

CLAUDIA SĂVESCU, Romanian Research and Development Institute for Gas Turbines COMOTI, Bucharest

Doctoral Student Eng., Scientific Researcher gr. III

Automation and Electrical Engineering Department

YELDA VELI, University Politehnica of Bucharest

Lector, Faculty of Electrical Engineering


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Électrotechnique et électroénergétique / Electrical and Power Engineering