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

被引：0
|
作者：
Choi, Eunho [1 ]
Kim, Jiwon [1 ]
Lee, Taehun [1 ]
Namgoong, Gyeongho [1 ]
Bien, Franklin [1 ]
机构：
[1] Ulsan Natl Inst Sci & Technol, Elect Engn, Ulsan, South Korea
来源：
2020 IEEE WIRELESS POWER TRANSFER CONFERENCE (WPTC) | 2020年
基金：
新加坡国家研究基金会;
关键词：
Fast Maximum Power Point Tracking(FMPPT); photovoltaic energy harvesting system; Successive approximation register (SAR); Analog to Digital Converter (ADC); Duty Ratio;
D O I：
10.1109/wptc48563.2020.9295575
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
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 mm(2).
引用
收藏
页码：163 / 165
页数：3
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