Title :
A wide-band piezoelectric energy-harvester for high-efficiency power generation at low frequencies
Author :
Tang, Q.C. ; Xinxin Li
Author_Institution :
State Key Lab. of Transducer Technol., Shanghai Inst. of Microsyst. & Inf. Technol., Shanghai, China
Abstract :
This paper presents a miniaturized piezoelectric vibration energy harvester that can generate over 1.5μW of average power at the frequency range of 9Hz to 19Hz under sinusoidal input acceleration of 1g. The harvester employs non-contact frequency up-conversion technique to excite two stages of generators, achieving wide-band low-frequency generating capability with a small size. The fabricated harvester was mounted on a moving bus to test its performance in a real-life situation and generated up to 1.11V of peak voltage and 123nW of peak power.
Keywords :
energy harvesting; piezoelectric transducers; vibrations; frequency 9 Hz to 19 Hz; high-efficiency power generation; noncontact frequency up-conversion technique; piezoelectric vibration energy harvester; wide-band low-frequency generating capability; wide-band piezoelectric energy-harvester; Films; Magnetic flux; Magnetic resonance; Time-frequency analysis; Vibrations; Vibration energy harvester; frequency up-conversion;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), 2013 Transducers & Eurosensors XXVII: The 17th International Conference on
Conference_Location :
Barcelona
DOI :
10.1109/Transducers.2013.6626862