A new energy harvesting interface techniquebased on synchronous inductor and buck-boost converter
SHI Dong-yu，WANG Hong-tao，MENG Ying-mei，ZHANG Bao-qiang
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Nanjing University of Aeronautics and Astronautics, Nanjing 210016,China
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History+
Received
Revised
Published
2013-10-21
2014-01-28
2015-01-25
Issue Date
2015-02-25
Abstract
The interface techniques play a vital role in the piezoelectric energy harvesting system. Classical techniques including Standard, SECE, Series-SSHI, Parallel-SSHI techniques are developed to improve the harvested power. In this paper, a new technique called SCEI, which includes a synchronous inductor and a buck-boost converter, is presented and its theoretical harvested power is calculated considering the constant displacement amplitude and force amplitude respectively. Theoretical results show that the harvested power of SCEI technique is larger than the maximum harvested power of Parallel-SSHI when ignoring the buck-boost converter’s efficiency under the circumstance of constant displacement amplitude. Furthermore, the harvested powers of the SCEI and SECE techniques have similar features when the generator is driven with constant driving force amplitude. Lastly, the experimental measurements are carried out to present a comparison between Standard, SECE, Series-SSHI, Parallel-SSHI and SCEI techniques when the generator is driven with constant displacement amplitude. The experimental results show that the proposed technique dramatically increases the harvested power, which is not influenced by the load resistance value, by almost up to 150% compared with the SECE technique in the same vibration condition.
SHI Dong-yu;WANG Hong-tao;MENG Ying-mei;ZHANG Bao-qiang.
A new energy harvesting interface techniquebased on synchronous inductor and buck-boost converter[J]. Journal of Vibration and Shock, 2015, 34(2): 109-113
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