title: Double synchronized switch harvesting (DSSH): a new energy harvesting scheme for efficient energy extraction.
abstract: This paper presents a new technique for optimized energy harvesting using piezoelectric microgenerators called double synchronized switch harvesting (DSSH). This technique consists of a nonlinear treatment of the output voltage of the piezoelectric element. It also integrates an intermediate switching stage that ensures an optimal harvested power whatever the load connected to the microgenerator. Theoretical developments are presented considering either constant vibration magnitude, constant driving force, or independent extraction. Then experimental measurements are carried out to validate the theoretical predictions. This technique exhibits a constant output power for a wide range of load connected to the microgenerator. In addition, the extracted power obtained using such a technique allows a gain up to 500% in terms of maximal power output compared with the standard energy harvesting method. It is also shown that such a technique allows a fine-tuning of the trade-off between vibration damping and energy harvesting.
authors.affiliation: Laboratoire de Génie Electrique et Ferroélectricité (LGEF), Institut National des Sciences Appliquées de Lyon (INSA-Lyon), France. mickael.lallart@insa-lyon.fr
authors.forename: Mickaël
authors.initials: M
authors.lastname: Lallart
authors.forename: Lauric
authors.initials: L
authors.lastname: Garbuio
authors.forename: Lionel
authors.initials: L
authors.lastname: Petit
authors.forename: Claude
authors.initials: C
authors.lastname: Richard
authors.forename: Daniel
authors.initials: D
authors.lastname: Guyomar
mesh_terms: D000162:Acoustics / Q000295:instrumentation*; D017076:Computer-Aided Design; D011211:Electric Power Supplies; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D055617:Micro-Electrical-Mechanical Systems / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014159:Transducers; D014732:Vibration