Back to Search
Start Over
A Self-Adaptive Time-Based MPPT With 96.2% Tracking Efficiency and a Wide Tracking Range of 10 $\mu$ A to 1 mA for IoT Applications.
- Source :
-
IEEE Transactions on Circuits & Systems. Part I: Regular Papers . Sep2017, Vol. 64 Issue 9, p2334-2345. 12p. - Publication Year :
- 2017
-
Abstract
- This paper presents a novel ultra-low power maximum power point tracking (MPPT) technique with a wide tracking range. An indirect, non-interrupting approach using a novel timing-based algorithm is proposed. The proposed MPPT technique is self-adaptive and applicable to the various types of photovoltaic cells without external reconfiguration or the change of passive components. In addition, a variable gain is employed in the one-hot barrel shift register to reduce the transient response time. A test chip was fabricated in 65-nm CMOS technology. The test chip can harvest energy with the input voltage range of 0.4 V to 1.7 V and the step response time of less than 100 ms at the minimum supply voltage of 0.8 V. The tracking efficiency is up to 96.2% when supplied by a photovoltaic micro-cell array using an irradiation range of 200 lux to 1000 lux. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 15498328
- Volume :
- 64
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Circuits & Systems. Part I: Regular Papers
- Publication Type :
- Periodical
- Accession number :
- 125895716
- Full Text :
- https://doi.org/10.1109/TCSI.2017.2693405