Title :
Modeling for Piezoelectric Stacks in Series and Parallel
Author :
Chunhua Sun ; Guangqing Shang ; Xuechao Zhu ; Yiyi Tao ; Zhirong Li
Author_Institution :
Dept. of Mech. & Electr. Eng., Suzhou Vocational Univ., Suzhou, China
Abstract :
Piezoelectric energy harvesting is a new type technology of green energy. To increase energy harvesting efficiency from below frequencies, which exist mostly in ambient, the piezoelectric stack assembled electrically in series and parallel is used as the energy harvester. Based on the third piezoelectric equations and equivalent circuit, the output voltage and power equations of piezoelectric stacks in series and parallel in d33 mode are derived. Higher voltage can be obtained from serial piezoelectric stack while higher power can be generated from parallel one. The results are verified by the experiment conducted on PZT-8. It is shown that the theoretical and measured values fit very well.
Keywords :
energy harvesting; environmental factors; equivalent circuits; piezoelectric transducers; PZT-8; d33 mode; energy harvesting efficiency; equivalent circuit; green energy; output voltage; parallel piezoelectric stack; piezoelectric energy harvesting; piezoelectric equation; power equation; serial piezoelectric stack; Energy harvesting; Equations; Force; Mathematical model; Power generation; Resistors; Voltage measurement; electric serial and parallel connection; energy harvesting; piezoelectric harvester; piezoelectric stack;
Conference_Titel :
Intelligent System Design and Engineering Applications (ISDEA), 2013 Third International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4673-4893-5
DOI :
10.1109/ISDEA.2012.228
