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DICH压电能量回收接口电路设计 被引量:3

The Design of DICH Interface Circuit in Piezoelectric Energy Harvesting System
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摘要 设计了一种新的能量回收接口电路——双中间电容回收(DICH)接口电路,该电路由2个LC振荡电路、一个buck-boost转换器和2个中间电容组成。完成了在恒定激振位移情况下该电路的回收功率的理论分析和计算。利用Multisim仿真软件对标准电路、同步电荷提取(SECE)接口电路、并联-同步开关电感回收(SSHI)、串联-SSHI和DICH接口电路进行了仿真比较,结果表明,双中间电容回收(DICH)接口电路在最优负载时的最大回收功率仅小于并联-SSHI接口电路,约是SECE接口电路的2倍,且具有与SECE接口电路同样的特性,即回收功率与负载无关。 A new interface technology of double intermediate capacitor harvesting(DICH)for piezoelectric energy harvesting system is presented.The interface consists of two LC oscillation circuits,a buck-boost converter and two intermediate capacitors.The theoretical analysis and calculation of the harvested power obtained by using such an interface technique are proposed considering constant displacement amplitude.The harvested powers of standard,SECE,Parallel-SSHI,Series-SSHI and DICH interface are simulated and compared by using the Multisim software.The results show that the harvested power of DICH interface circuit under the optimal load is only less than the parallel-SSHI interface circuit,DICH interface technology has similar features with SECE whose effect is not influenced by the load resistance value,furthermore,the DICH interface circuit increases the harvested power dramatically by almost up to 200% compared with the SECE method under the same vibration condition.
出处 《压电与声光》 CSCD 北大核心 2015年第2期349-353,共5页 Piezoelectrics & Acoustooptics
基金 航空科学基金资助项目(2012ZA52009)
关键词 能量回收 压电效应 接口电路 振动 机电转换 energy harvesting piezoelectric effect interface circuit vibration electromechanical conversion
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