This paper analyzes the power–bandwidth–voltage interaction in a piezoelectric vibration energy harvester (PVEH) system, specifically accounting for the operating voltage constraint imposed by the interface power electronics (PE). The analysis is sufficiently generic to apply to different linear PVEHs with their interface PE. The power–bandwidth–voltage relation derived here outlines the best possible PVEH system performance when the PVEH-PE interface voltage is constrained, as is often the case in IoT applications. Alternatively, it can serve as a figure of merit with which to benchmark the performance of existing PVEH systems, and identify best design practices.

本文分析了压电振动能量采集器（PVEH）系统中的功率-带宽-电压相互作用，特别考虑了界面功率电子器件（PE）施加的工作电压约束。该分析足够通用，可以应用于具有接口PE的不同线性PVEH。在PVEH-PE接口电压受约束的情况下，此处得出的功率-带宽-电压关系概述了最佳的PVEH系统性能，这在物联网应用中通常是这样。或者，它可以作为衡量现有PVEH系统性能的基准并确定最佳设计实践的品质因数。