Abstract
AbstractRotary wind energy harvester has always been the focus of attention in the field of self‐power technology. However, a conflict between start‐up and saturation rotation speed of wind energy harvester hinders the adaptive energy collection from low to strong wind speeds in different wind speed ranges. Herein, a self‐powered system by an aerodynamic‐complementary triboelectric‐electromagnetic hybridized generator (AC‐TEHG) equipped with a triple‐mode switching power management topology (TmSPMT) is proposed to achieve self‐adaptive power supply mode switching in response to different wind speed ranges. Specifically, AC‐TEHG integrates Savonius and wind cup miniaturized turbine to achieve layered energy collection over wide‐range wind speed regions (1.4–16.3 m s−1), where the triboelectric nanogenerator (TENG) and electromagnetic generator (EMG) units have the excellent electrical output with Voc, Isc, and instantaneous peak power reaching 664 V/10.83 V, 35.96 µA/19.84 mA and 8.01 mW/62.45 mW, respectively. AC‐TEHG equipped with TmSPMT can effectively respond to different wind speed ranges of windlessness, low, medium, and high wind speeds for steadily powering commercial electronics. Finally, a wireless self‐powered climate monitoring system is developed to indicate that AC‐TEHG equipped with TmSPMT is a sustainable solution to efficiently power Internet of Things sensors in regions with variable wind speeds.
Published Version
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