Title :
PSPICE-Based Analyses of the Vibration Energy Harvester System With Multiple Piezoelectric Units
Author :
Xiaobin Cui ; Mingming Teng ; Junhui Hu
Author_Institution :
State Key Lab. of Mech. & Control of Mech. Struct., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
It has been a challenge to determine the optimal energy-storage capacitance in piezoelectric vibration energy harvesting (VEH) systems for a given working time. In this paper, the PSPICE software is used to determine the optimal energy-storage capacitance in a VEH system with one or more piezoelectric modules, for maximizing the energy harvesting capability, and to investigate the dependence of this optimum energy-storage capacitance on the device and working parameters. The simulation method is verified by experimental results. It is found that the optimal energy-storage capacitance increases with an increase of the clamped capacitance, working frequency, and working time of the piezoelectric modules. It is also found that the optimal energy-storage capacitance is proportional to the number of the piezoelectric modules used in the VEH system if the piezoelectric modules have close parameters.
Keywords :
SPICE; energy harvesting; energy storage; piezoelectric transducers; power engineering computing; vibrations; PSPICE-based analyses; VEH system; clamped capacitance; multiple piezoelectric unit; optimal energy-storage capacitance; piezoelectric module; piezoelectric vibration energy harvesting system; working frequency; Capacitance; Capacitors; Energy harvesting; Equivalent circuits; Resonant frequency; SPICE; Vibrations; Capacitance; PSPICE; equivalent circuit; piezoelectric; vibration energy harvesting (VEH);
Journal_Title :
Electrical and Computer Engineering, Canadian Journal of
DOI :
10.1109/CJECE.2015.2431312
