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作者机构:Hanyang Univ Dept Elect Engn Seoul 133791 South Korea
出 版 物:《FERROELECTRICS》 (铁电体)
年 卷 期:2013年第449卷第1期
页 面:42-51页
核心收录:
学科分类:080805[工学-电工理论与新技术] 080904[工学-电磁场与微波技术] 0808[工学-电气工程] 0809[工学-电子科学与技术(可授工学、理学学位)] 08[工学] 0805[工学-材料科学与工程(可授工学、理学学位)] 0702[理学-物理学]
基 金:Hanyang University [HY-2010-n]
主 题:Piezoelectric energy harvesting system multiple piezoelectric array impact rectifier array configuration
摘 要:This paper suggests the design in rectifier and array configuration for an impact-based piezoelectric energy harvesting (PEH) system, to investigate the charging efficiency. In the design of the rectifier, it is suggested that rectifying the signal from each piezoelectric module separately generates more electrical energy and charges a capacitor faster than using a single rectifier for all modules connected in series. In the structural design, the array was designed into two conditions: impacted simultaneously and impacted sequentially with a phase difference (30 degrees, 60 degrees, 90 degrees, 120 degrees, 150 degrees and 180 degrees). We show that when impacted sequentially with a phase difference, this allows faster charging rates of energy harvesting. Additionally, distribution of the torque required to transform the piezoelectric modules was found to be another advantage from this condition. These results could be used in the design of more-efficiently-charging impact-based PEH system.