Title :
Electromagnetic Energy Harvesting Circuit With Feedforward and Feedback DC–DC PWM Boost Converter for Vibration Power Generator System
Author :
Cao, Xinping ; Chiang, Wen-Jen ; King, Ya-Chin ; Lee, Yi-Kuen
Author_Institution :
Dept. of Mech. Eng., Hong Kong Univ. of Sci. & Technol.
fDate :
3/1/2007 12:00:00 AM
Abstract :
This paper presents an integrated vibration power generator system. The system consists of a mini electromagnetic vibration power generator and a highly efficient energy harvesting circuit implemented on a minute printed circuit board and a 0.35-mum CMOS integrated chip. By introducing a feedback control into the dc-dc pulsewidth modulation (PWM) boost converter with feedforward control, the energy harvesting circuit can adjust the duty ratio of the converter following the variation of the input voltage and the voltage of energy storage element to get high energy conversion efficiency. The energy harvesting circuit rectifies the input ac voltage, steps up the dc output of the rectifier by the dc-dc PWM boost converter with feedforward and feedback control and stores the electric energy into a super capacitor, which can be used as a small electrical power supply for an intelligent micro sensor network
Keywords :
DC-DC power convertors; PWM rectifiers; electric power generation; electromagnetic devices; feedback; feedforward; microsensors; printed circuits; supercapacitors; vibrations; CMOS integrated chips; electromagnetic energy harvesting circuit; energy conversion efficiency; energy storage element; feedback control; feedback converter; feedforward DC-DC PWM boost converter; integrated vibration power generator system; intelligent microsensor network; printed circuit board; rectifiers; supercapacitors; DC-DC power converters; Feedback circuits; Feedback control; Intelligent sensors; Power generation; Printed circuits; Pulse circuits; Pulse width modulation; Pulse width modulation converters; Voltage control; DC–DC pulsewidth modulation (PWM) boost converter; energy harvesting; integrated power generator; micro sensor network; vibration;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2006.890009
