电子元件与材料
電子元件與材料
전자원건여재료
ELECTRONIC COMPONENTS & MATERIALS
2015年
3期
67-71
,共5页
能量回收%压电效应%接口电路%振动%电子仿真%机电转换
能量迴收%壓電效應%接口電路%振動%電子倣真%機電轉換
능량회수%압전효응%접구전로%진동%전자방진%궤전전환
energy harvesting%piezoelectric effect%interface circuit%vibration%electronic simulation%electromechanical conversion
具有较大回收功率且回收功率不随负载变化是设计基于压电效应的能量回收接口电路需要考虑的主要因素，标准接口、SECE、串联SSHI、并联SSHI是常用的四种接口电路，其中SECE接口电路的回收功率与负载无关，基于此提出了一种新的压电能量回收接口电路——ESEI(Enhanced Synchronous Charge Extraction and Inversion Interface)接口电路，分析计算了该接口电路在恒定激振位移下的回收功率，并利用电子仿真软件 Multisim 对 ESEI和四种接口电路的回收功率进行了仿真和比较。结果表明当负载大于临界值时，ESEI 接口电路的回收功率达到最大值且与负载没有关系，该最大回收功率值约为SECE接口电路的4倍，仅小于并联SSHI接口电路。
具有較大迴收功率且迴收功率不隨負載變化是設計基于壓電效應的能量迴收接口電路需要攷慮的主要因素，標準接口、SECE、串聯SSHI、併聯SSHI是常用的四種接口電路，其中SECE接口電路的迴收功率與負載無關，基于此提齣瞭一種新的壓電能量迴收接口電路——ESEI(Enhanced Synchronous Charge Extraction and Inversion Interface)接口電路，分析計算瞭該接口電路在恆定激振位移下的迴收功率，併利用電子倣真軟件 Multisim 對 ESEI和四種接口電路的迴收功率進行瞭倣真和比較。結果錶明噹負載大于臨界值時，ESEI 接口電路的迴收功率達到最大值且與負載沒有關繫，該最大迴收功率值約為SECE接口電路的4倍，僅小于併聯SSHI接口電路。
구유교대회수공솔차회수공솔불수부재변화시설계기우압전효응적능량회수접구전로수요고필적주요인소，표준접구、SECE、천련SSHI、병련SSHI시상용적사충접구전로，기중SECE접구전로적회수공솔여부재무관，기우차제출료일충신적압전능량회수접구전로——ESEI(Enhanced Synchronous Charge Extraction and Inversion Interface)접구전로，분석계산료해접구전로재항정격진위이하적회수공솔，병이용전자방진연건 Multisim 대 ESEI화사충접구전로적회수공솔진행료방진화비교。결과표명당부재대우림계치시，ESEI 접구전로적회수공솔체도최대치차여부재몰유관계，해최대회수공솔치약위SECE접구전로적4배，부소우병련SSHI접구전로。
There are two main factors should be considered when the interface circuit of piezoelectric energy harvesting system is designed, that are higher power harvesting and load value independence. Standard, SECE, Series-SSHI and Parallel-SSHI are four common interface circuits, in which only the SECE circuit keeps the harvested power being not influenced by the load value. Based on ESCE, a new interface circuit named enhanced synchronous charge extraction and inversion interface(ESEI) was presented,whose theoretical harvested power was calculated and compared with four common circuits in the condition of constant displacement amplitude, and the software Multisim was used to simulate these circuits. The simulation results show that the harvested power of the ESEI circuit is not influenced by the load value and keeps the maximum when the load value is larger than a critical value. The ESEI interface circuit has the slightly smaller harvested power value than Parallel-SSHI interface circuit, but it increases the harvested power dramatically by almost up to 400%compared with the SECE method.
