介电弹性体发电的基本原理及在分布式发电中的应用

The basic mechanism of dielectric elastomer generator and its applications in distributed power generation

论述介电弹性体发电的基本原理、目前的研究情况及应用前景。作为发电材料,介电弹性体与其他发电材料比较,其具有材料价格便宜、容易制造且质地柔顺,特别适合于诸如利用风及海浪等大动作进行发电的场合。

Discusses generator mode theory fundamentals of dielectric elastomer, describes promise and work on potential applications of dielectric elatomer as power generator. Dieleetric elastomer are a particular type of EAPs that have best demonstrated exceptional performance. This type of field-activated EAPs has shown tremendous promise for applications as actuators. Their advantages in converting mechanical to electrical energy in a generator mode are less well known. Acrylic elastomers have demonstrated an estimated 0.4J/g specific energy density, compared to around 0.1J/g for advanced single crystal ceramics and around 0.04J/g for peak electromagnetic. Much higher energy densities, over 1J/g, are predicted. High conversion efficiency is predicted, theoretically up to 80%-90%. In addition to superior performance, dielectric elastomers have two features that distinguish them from other energy-conversion materials： They are made from low cost materials that can be easily fabricated and they are compliant. Dielectric elastomer electrical energy generation is well suited to applications where electrical power must be produced from relatively large motions produced by wind and waves.