Title: A Direct AC-DC and DC-DC Cross-Source Energy Harvesting Circuit with Analog Iterating-Based MPPT Technique with 72.5% Conversion Efficiency and 94.6% Tracking Efficiency
Authors: Chen, Shin-Hao
Huang, Tzu-Chi
Ng, Shao Siang
Lin, Kuei-Liang
Du, Ming-Jhe
Kang, Yu-Chai
Chen, Ke-Horng
Wey, Chin-Long
Lin, Ying-Hsi
Lee, Chao-Cheng
Lin, Jian-Ru
Tsai, Tsung-Yen
Institute of Electrical and Control Engineering
Keywords: Analog iterating-based (AIB) maximum power point tracking (MPPT) technique;cross-source energy (CSE) harvesting system;universal energy sources
Issue Date: Aug-2016
Abstract: The proposed cross-source energy (CSE) harvesting system accepts universal energy sources, including the ac and dc sources. The buck-boost conversion of CSE automatically converts ac or dc input into dc output without being limited by the type of universal energy source. The CSE technique simultaneously supplies the regulated output for the system loading and the battery charging output. A test chip fabricated in the VIS Bipolar, CMOS, and DMOS (BCD) process can optimally derive harvest energy with 72.5% power efficiency when one solar input source is used. A backup converter is designed to complement the CSE technique to guarantee the regulation of output voltage. The proposed analog iterating-based (AIB) maximum power point tracking (MPPT) technique achieves 94.6% tracking efficiency without complex data calculation and storage, which are better results compared with those of previous research.
URI: http://dx.doi.org/10.1109/TPEL.2015.2489922
ISSN: 0885-8993
DOI: 10.1109/TPEL.2015.2489922
Volume: 31
Issue: 8
Begin Page: 5885
End Page: 5899
Appears in Collections:Articles