Abstract
Energy harvesting, a solution to provide a lifetime power supply to wireless sensor nodes,has attracted widespread attention in the last two decades. An energy harvester collects ambientenergy, e.g., solar, thermal, or vibration energy, and transforms it into electrical energy. In thiswork, we work on an electromagnetic energy harvester model, which is composed of four magnetsoscillating along a coil. Such a device converts the vibrational energy into electrical energy. Wereproduce the electromagnetic energy harvester model in finite element-based software. In order toinclude this model in a system-level simulation, the methodology of extracting a look-up table-basedequivalent circuit model is presented. Such an equivalent circuit model enables the interaction ofthe electromagnetic energy harvester model with both electrical and mechanical compact models atthe system-level. Furthermore, the matrix interpolation-based and algebraic parameterization-basedparametric model order reduction methods are suggested for speeding up the generation of theequivalent circuit model and the design optimization process with respect to magnet dimensions.The efficiencies of these two methods are investigated and compared.