Synchronous Pre-biasing of Triboelectric Nanogenerator for Enhanced Energy Extraction

Triboelectric Nanogenerator (TENG) is a class of ambient mechanical energy harvesters used to augment the battery life electronic devices such as sensors in implantables, wearables, and Internet Things (IoT) applications. In this work, fundamentals pre-biasing (pre-charging) TENG at start operation cycle enhance per-cycle extracted presented. The gain mathematically formulated, optimum voltage (equivalently charge) derived by analyzing exchange between electrical domain over periodic cycle. Further, novel Energy Extraction Circuit (EEC) termed "Pre-biased Synchronous Charge (pSCE)" introduced 1) Realize synchronous using load itself 2) Achieve enhanced extraction from TENG. output analytically for pSCE circuit compared state art (SCE) circuit. experimental implementation performed proposed that shows 6.65 fold Full Wave Rectifier (standard EEC) 1.45 SCE 5V load.