A micro electromagnetic generator for vibration energy harvesting

被引:1121
作者
Beeby, S. P. [1 ]
Torah, R. N.
Tudor, M. J.
Glynne-Jones, P.
O'Donnell, T.
Saha, C. R.
Roy, S.
机构
[1] Univ Southampton, Sch Elect & Comp Sci, Southampton SO17 1BJ, Hants, England
[2] Natl Univ Ireland Univ Coll Cork, Tyndall Natl Inst, Cork, Ireland
基金
英国工程与自然科学研究理事会;
关键词
Power generation;
D O I
10.1088/0960-1317/17/7/007
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Vibration energy harvesting is receiving a considerable amount of interest as a means for powering wireless sensor nodes. This paper presents a small ( component volume 0.1 cm(3), practical volume 0.15 cm(3)) electromagnetic generator utilizing discrete components and optimized for a low ambient vibration level based upon real application data. The generator uses four magnets arranged on an etched cantilever with a wound coil located within the moving magnetic field. Magnet size and coil properties were optimized, with the final device producing 46 mu W in a resistive load of 4 k Omega from just 0.59 m s(-2) acceleration levels at its resonant frequency of 52 Hz. A voltage of 428 mVrms was obtained from the generator with a 2300 turn coil which has proved sufficient for subsequent rectification and voltage step-up circuitry. The generator delivers 30% of the power supplied from the environment to useful electrical power in the load. This generator compares very favourably with other demonstrated examples in the literature, both in terms of normalized power density and efficiency.
引用
收藏
页码:1257 / 1265
页数:9
相关论文
共 20 条
[1]  
Banazwski B, 2003, FUEL CELL SCIENCE, ENGINEERING AND TECHNOLOGY, P149
[2]   Energy harvesting vibration sources for microsystems applications [J].
Beeby, S. P. ;
Tudor, M. J. ;
White, N. M. .
MEASUREMENT SCIENCE AND TECHNOLOGY, 2006, 17 (12) :R175-R195
[3]   A laser-micromachined multi-modal resonating power transducer for wireless sensing systems [J].
Ching, NNH ;
Wong, HY ;
Li, WJ ;
Leong, PHW ;
Wen, ZY .
SENSORS AND ACTUATORS A-PHYSICAL, 2002, 97-8 :685-690
[4]  
Despesse G, 2005, P DES TEST INT PACK, P386
[5]   Design and fabrication of a new vibration-based electromechanical power generator [J].
El-hami, M ;
Glynne-Jones, P ;
White, NM ;
Hill, M ;
Beeby, S ;
James, E ;
Brown, AD ;
Ross, JN .
SENSORS AND ACTUATORS A-PHYSICAL, 2001, 92 (1-3) :335-342
[6]   Millimeter-scale, micro-electro-mechanical systems gas turbine engines [J].
Epstein, AH .
JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 2004, 126 (02) :205-226
[7]   An electromagnetic, vibration-powered generator for intelligent sensor systems [J].
Glynne-Jones, P ;
Tudor, MJ ;
Beeby, SP ;
White, NM .
SENSORS AND ACTUATORS A-PHYSICAL, 2004, 110 (1-3) :344-349
[8]   Towards a piezoelectric vibration-powered microgenerator [J].
Glynne-Jones, P ;
Beeby, SP ;
White, NM .
IEE PROCEEDINGS-SCIENCE MEASUREMENT AND TECHNOLOGY, 2001, 148 (02) :68-72
[9]  
Glynne-Jones P, 2001, THESIS U SOUTHAMPTON
[10]  
HONG YK, 2005, P SOC PHOTO-OPT INS, V6048, P1