access icon free PWM interface for piezoelectric energy harvesting

A wideband electric interface based on pulse width modulation (PWM) for a piezoelectric energy harvester is investigated. The switching interfaces are used to increase the output power of energy harvesting devices for a wide frequency range. It is shown that the energy harvesting technique can effectively enable harvested power to be the maximum possible value for a dynamic electromechanical system for all excitation frequencies. The proposed wideband interface is composed of a full-bridge converter with PWM modulation. The piezoelectric voltage is adaptive to the vibration. In the final experiment, the PWM interface harvested more energy in the case of multi-frequency vibration.

Inspec keywords: bridge circuits; piezoelectric transducers; vibrations; energy harvesting; PWM power convertors

Other keywords: switching interfaces; PWM interface; dynamic electromechanical system; full-bridge converter; PWM converters; piezoelectric energy harvesting; wideband electric interface; piezoelectric voltage; multifrequency vibration

Subjects: Power convertors and power supplies to apparatus; Piezoelectric devices; Energy harvesting

References

    1. 1)
      • 2. Vasic, D., Chen, Y.Y., Costa, F.: ‘Design of self-powering part of SSHI interface for piezoelectric energy harvesting’, Electron. Lett., 2013, 49, (4), pp. 288290 (doi: 10.1049/el.2012.3898).
    2. 2)
      • 3. Shu, Y.C., Lien, I.C.: ‘Efficiency of energy conversion for a piezoelectric power harvesting system’, J. Micromech. Microeng., 2006, 16, pp. 24292438 (doi: 10.1088/0960-1317/16/11/026).
    3. 3)
      • 1. Chen, Y.Y., Vasic, D., Costa, F., Wu, W.J., Lee, C.K.: ‘A self-powered switching circuit for piezoelectric energy harvesting with velocity control’, Eur. Phys. J. Appl. Phys., 2012, 57, p. 30903 (doi: 10.1051/epjap/2012110355).
http://iet.metastore.ingenta.com/content/journals/10.1049/el.2013.1278
Loading

Related content

content/journals/10.1049/el.2013.1278
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
Correspondence
This article has following corresponding article(s):
vibrant with energy*