와류를 이용한 압전 에너지 수확 회로의 전력 분석

Geon-Min Park; Chong-Hyun Lee; Cheeyoung Cho

doi:10.7776/ASK.2019.38.2.222

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2019 Vol.38, Issue 2 Preview Page Next Page

Research Article

와류를 이용한 압전 에너지 수확 회로의 전력 분석 Electrical power analysis of piezoelectric energy harvesting circuit using vortex current

31 March 2019. pp. 222-230

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Abstract

In this paper, the power of the energy harvesting circuit using the PVDF (Polyvinylidene fluoride) piezoelectric sensor transformed by vortex was analyzed. For power analysis, a general bridge diode rectifier circuit and a P-SSHI (Parallel Synchronized Switch Harvesting on Inductor) rectifier circuit with a switching circuit were used. The P-SSHI circuit is a circuit that incorporates a parallel synchronous switch circuit at the input of a general rectifier circuit to improve energy conversion efficiency. In this paper, the output power of general rectifier circuit and P-SSHI rectifier circuit is analyzed and verified through theory and experiment. It was confirmed that the efficiency was increased by 69 % through the experiment using the wind. In addition, a circuit for storing the harvested energy in the supercapacitor was implemented to confirm its applicability as a secondary battery.

Keywords

Energy harvesting

PVDF (Polyvinylidene fluoride)

P-SSHI (Parallel Synchronized Switch Harvesting on Inductor)

Supercapacitor

본 논문에서는 유체의 와류 현상을 이용한 에너지 하베스팅 회로의 전력을 분석하였다. 와류를 전기 에너지로 바꾸기 위한 소자로 PVDF (Polyvinylidene fluoride) 압전 센서를 사용하였으며, 전력 분석을 위해 잘 알려진 브리지 다이오드 정류 회로와 전력 변환 효율을 향상시키기 위해 다이오드 정류회로 입력단에 병렬 동기 스위치 회로를 접목한 P-SSHI(Parallel Synchronized Switch Harvesting on Inductor) 정류 회로를 사용하였다. 다이오드 및 P-SSHI 정류 회로의 출력 전력은 이론을 통해 분석하였고 실험을 통해 검증하였다. 공기에 의한 와류를 이용한 실험을 통해 P-SSHI 정류 회로의 전력효율이 69 % 증가됨을 확인하였다. 또한 수확된 와류 에너지를 슈퍼 커패시터에 저장하는 회로를 구현하여 2차 전지로써 활용이 가능함을 확인하였다.

키워드

에너지 하베스팅

PVDF (Polyvinylidene fluoride)

P-SSHI (Parallel Synchronized Switch Harvesting on Inductor) 회로

슈퍼커패시터

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Information

Publisher :The Acoustical Society of Korea
Publisher(Ko) :한국음향학회
Journal Title :The Journal of the Acoustical Society of Korea
Journal Title(Ko) :한국음향학회지
Volume : 38
No :2
Pages :222-230
Received Date : 2018-11-06
Revised Date : 2018-12-21
Accepted Date : 2019-03-25
DOI :https://doi.org/10.7776/ASK.2019.38.2.222

The Journal of the Acoustical Society of KoreaISSN:1225-4428(Print) 2287-3775(Online)한국음향학회

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