Effects of Geometrical Parameters on Performances of Wind Energy Harvester with Chamber

摘要：

　　To improve the performances under low speed wind,a wind energy harvester similar to harmonicas was proposed.The harvester mainly includes a cuboid chamber and a cantilevered beam.The front wall of the chamber is opened as the air entrance and a rectangular hole is opened on the sidewall as the exit.The cantilever composed of a piezoelectric sheet and a flexible beam was fixed onto the sidewall of the chamber near the exit.Experimental results show that the width and height of the chamber significantly affect critical wind speed and output power,respectively.The initial attack angle of the cantilever has important influence on the critical wind speed.Blunt body at the air entrance could remarkably decrease the critical wind speed.For a prototype with a 60 mm×20 mm×13 mm chamber,the length of the cantilever of 30 mm and the length of the piezoelectric sheet of 8 mm,the measured maximum output power is 1.1 mW under 17 m/s wind.

关键词： Energy harvesting flow-induced-vibration harmonic cavity piezoelectricity blunt body

作者: Xue-feng He Yi-fu Fang Zhi-gang Du

作者单位: Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry of China, Chongqin Microsystem Research Center, Chongqing University, Chongqing 400044, China

会议类型: 国际会议

会议名称: 中国微米纳米技术学会第14届学术年会、第3届国际年会暨第6届微米纳米技术“创新与产业化国际研讨与展览会(CSMNT2012 & ICMAN2012)

会议地点: 杭州

会议语种:英文

页码: 1-6

在线出版日期: 2012-11-04（万方平台首次上网日期，不代表论文的发表时间）