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http://dx.doi.org/10.6109/jkiice.2011.15.11.2457

Design of a Vibration Energy Harvesting Circuit With MPPT Control  

Park, Joon-Ho (인천대학교 전자공학과)
Yoon, Eun-Jung (인천대학교 전자공학과)
Park, Jong-Tae (인천대학교 전자공학과)
Yu, Chong-Gun (인천대학교 전자공학과)
Abstract
In this paper, a vibration energy harvesting circuit using a piezoelectric device is designed. MPPT(Maximum Power Point Tracking) control function is implemented using the electric power-voltage characteristic of a piezoelectric device to deliver the maximum power to load. The designed MPPT control circuit traces the maximum power point by periodically sampling the open circuit voltage of a full-wave rectifier circuit connected to the piezoelectric device output and delivers the maximum available power to load. The proposed vibration energy harvesting circuit is designed with $0.18{\mu}m$ CMOS process. Simulation results show that the maximum power efficiency of the designed circuit is 91%, and the chip area except pads is $700{\mu}m{\times}730{\mu}m$.
Keywords
Energy harvesting; Vibration energy; Piezoelectric device; MPPT;
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