Journal
SENSORS AND ACTUATORS A-PHYSICAL
Volume 261, Issue -, Pages 117-129Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.sna.2017.04.035
Keywords
Wind energy harvesting; Interface comparison; Aeroelasticity; Piezoelectric material
Ask authors/readers for more resources
There has been growing research interest in converting ambient energy in the environment to electricity in order to realize self-powered electronic systems such as wireless sensor networks. This paper targets wind energy as an alternate power source. While structural modification of a wind energy harvester contributes to the power enhancement, the electrical interfacing circuit is also vital for the system optimization. However, despite the enthusiastic investigation on interfacing circuit in the field of base vibration energy harvesting, it has been frequently ignored in wind energy harvesting researches. This paper evaluates and compares the performances of four electrical interfacing circuits in a galloping-based wind energy harvesting system, including the synchronous charge extraction (SCE) circuit, series and parallel synchronized switch harvesting on inductor (SSHI) circuits as well as the standard circuit. Based on the analysis, a guideline is proposed for circuit selection in different circumstances. It is concluded that the SCE circuit is suitable for weak coupling and higher wind speed conditions. The two SSHI circuits are recommended in both weak coupling and medium coupling conditions, especially when a low cut in wind speed is desired. The series-SSHI circuit is suggested in high terminal load situation while the parallel-SSHI circuit is recommended in small terminal load condition. If strong coupling presents, the standard circuit is recommended considering its simplicity and equally good performance with that of the SSHI interfaces. In special, it is found that the behavior of the ranges of k(e)(2) for the SCE, S-SSHI and P-SSHI with enhanced power over the standard circuit is different from the case of base vibration energy harvesting. (C) 2017 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available