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Bien, Franklin
Bien’s Integrated Circuit Design Lab (BICDL)
Research Interests
  • Wireless Power Transfer(WPT), touch screen, finger print, RADAR, RF IC.

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Fast Maximum Power Point Tracking Technique With 4-Bits/Cycle SAR ADC for Photovoltaic Energy Harvesting System

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Title
Fast Maximum Power Point Tracking Technique With 4-Bits/Cycle SAR ADC for Photovoltaic Energy Harvesting System
Author
Choi, EunhoKim, JiwonLee, TaehunNamgoong, GyeonghoBien, Franklin
Issue Date
2020-11-16
Publisher
IEEE Power Electronics society
Citation
IEEE Wireless Power Transfer Conference
Abstract
This paper presents a photovoltaic(PV) energy-harvesting system with fast maximum power point tracking (FMPPT) circuit that utilizes 4-bit successive approximation register analog to digital converter (SAR ADC) suitable for solar cells. Solar Panel’s output power depends on switch duty ratio of inductive-boost DC/DC converter. Usability of 4-bit/cycle SAR ADC to adjust duty ratio is proved through the measurement, using conventional Pulse Frequency Modulation (PFM) boost converter. This circuit achieves short tracking time of 4-cycle in order to reach the MPP and high MPPT efficiency of 99.5 %, while consuming the low power. The switches and control stages were implemented into 0.18-um CMOS process, and a chip size is 2.13 x 1.66 mm2.
URI
https://scholarworks.unist.ac.kr/handle/201301/49584
URL
https://ieeexplore.ieee.org/document/9295575
DOI
10.1109/WPTC48563.2020.9295575
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