Power management for triboelectric and electrostatic generators enabling continuous and stable power delivery
2026-04-25
Power management is essential for effectively utilizing energy harvested from triboelectric and electrostatic generators. However, current strategies suffer from control and conversion challenges such as inefficient switch designs and load-dependent outputs, resulting in substantial performance degradation when powering practical electronics. Here, we present an efficient and universal power management strategy to improve energy utilization. It features a self-powered peak-detection switch for enhancing energy harvesting, a voltage elevation strategy to improve AC–DC conversion, and an energy regulation module that dynamically allocates the harvested energy to ensure a continuous and stable power supply. Benefiting from the switch’s power-boosting mechanism, the output power after power management reaches 1.08 times the generator’s optimal AC output. This enables the reliable operation of a 20 dBm LoRa node powered by a 55-mm-radius electret generator at 36 rpm. This work facilitates the integration of triboelectric and electrostatic generators into practical electronic systems.