Journal of University of Chinese Academy of Sciences >
Dynamic charge current adjusting method and its application in high effective solar-lion battery system
Received date: 2012-09-03
Revised date: 2012-10-16
Online published: 2012-10-16
We propose a dynamic charge current adjusting method and have used it in solar panel-lithium battery charging system. A digital potentiometer controlled dynamically by a low power MCU is used to set the maximum charging current to LiFePO4 from charging circuit. The method ensures effective implementation of the solar maximum power tracking (MPPT) and of the battery protection when low voltage or full charged.The test results show that the MPPT efficiency is up to 98.5%, the power conversion efficiency is up to 93.5%, and the maximum charge current is 3.96 A.
Key words： dynamic charge current control; MPPT; LiFePO4 battery
YANG Yong-You , YI Wei-Dong , JWO Ko-Wen . Dynamic charge current adjusting method and its application in high effective solar-lion battery system[J]. Journal of University of Chinese Academy of Sciences, 2013 , 30(3) : 361 -367 . DOI: 10.7523/j.issn.1002-1175.2013.03.013
[1] Raghunathan V, Kansal A, Hsu J. Design considerations for solar energy harvesting wireless embedded systems[C]//Proc 4th Int Symp on Information Processing in Sensor Networks. Los Angeles, California, USA,15 April 25-27,2005:457-462.
[2] Jiang X, Polastre J, Culler D. Perpetual environmentally powered sensor networks[C]//Proc 4th Int Symp on Information Processing in Sensor Networks. Los Angeles, California, USA, 15 April 25-27,2005:463-468.
[3] Nasiri A, Zabalawi S A, Mandic G. Indoor power harvesting using photovoltaic cells for low power applications[J]. IEEE Trans on Industrial Electronics, 2009,56:4502-4509.
[4] Colgov A, Zane R, Popovic Z. Power management system for online low power RF energy harvesting optimization[J]. IEEE Trans on Circuits and Systems, 2010,57:1802-1811.
[5] Dalola S, Ferrari M, Ferrari V. Characterization of thermoelectric modules for powering autonomous sensors[J]. IEEE Trans on Instrumentation and Measurement, 2009,58:99-107.
[6] Mitcheson P D, Yeatman E M, Rao G K. Energy harvesting from human and machine motion for wireless electronic devices[J]. Proceedings of the IEEE, 2008,96:1457-1486.
[7] Tan Y K, Panda S K. Optimized wind energy harvesting system using emulator and active rectifier for wireless sensor nodes[J]. IEEE Trans on Power Electronics, 2011,26:38-50.
[8] Esram T, Chapman P L. Comparison of photovoltaic array maximum power point tracking techniques[J]. IEEE Trans on Energy Conversion, 2007,22:439-449.
[9] Enslin J H R, Wolf M S, Snyman D B. Integrated photovoltaic maximum power point tracking converter[J]. IEEE Trans on Industrial Electronics, 1997,44:769-773.
[10] Veerachary M. Power tracking for nonlinear PV sources with coupled inductor SEPIC converter[J]. IEEE Trans on Aerospace and Electronic Systems, 2005,41(3):1019-1029.
[11] Orellana M, Petibon S, Estibals B. Four switch buck-boost converter for photovoltaic DC-DC powerapplications[C]//The 36th Annual Conference on IEEE Industrial Electronics Society. Glendale, AZ, USA.November 7-10, 2010:469-474.
[12] Brunelli D, Moser C, Thiele L. Design of a solar-harvesting circuit for batteryless embedded systems[J]. IEEE Trans on Circuits and Systems, 2009,56(11):2519-2528.
[13] Dondi D, Brunelli D, Benini L. Photovoltaic cell modeling for solar energy powered sensor networks[C]//Proceedings of the Second IEEE International Workshop on Advances in Sensors and Interfaces. Bari, Italy. June 26-27,2007:105-110.
[14] López-Lapea O, Penella M T. A new MPPT method for low-power solar energy harvesting[J]. IEEE Trans on Industrial Electronics, 2010,57(9):3129-3138.
[15] López-Lapea O, Penella M T, Gasulla M. A close-loop maximum power point tracker for sub-watt photovoltaic panels[J]. IEEE Trans on Industrial Electronics, 2012,59(3):1588-1596.
[16] Simjee F I, Chou P H. Efficient charging of supercapacitors for extended lifetime of wireless sensor nodes[J]. IEEE Trans on Power Electronics, 2008,23(3):1526-1536.
/
| 〈 |
|
〉 |