Evaluating Piezoelectric Materials and Vibration Modes for Power Conversion

Piezoelectric components offer several potential advantages to power conversion including high density and efficiency capabilities compared magnetics at small scales. Converter architectures have been developed for efficient utilization of piezoelectrics, but without fundamental criteria designing the piezoelectric themselves. In this article, we derive figures merit achievable efficiencies handling densities materials vibration modes based on realistic in a converter. These are likewise accompanied by geometry conditions that serve as guidelines high-efficiency high-power-density resonator design. We demonstrate use these metrics evaluate commercially available PZT lithium niobate across seven modes, validate with numerical solutions converter operation experimental results. The proposed concluded be highly representative piezoelectrics conversion, shown favorable scaling properties miniaturization.