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.

Volume

22

Issue

2

fYear

2007

fDate

3/1/2007 12:00:00 AM

Firstpage

679

Lastpage

685

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;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2006.890009

Filename

4118291