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Date of Publication:2022-10-06

Journal:电源学报

Issue:5

Page Number:37-42

Abstract:To provide an analytical understanding of the power characteristic of so-called self-powered synchronized switch damping on inductor, the theoretical analysis of its impedance and output power in different load resistance was proposed. The output power of load resistance and the total power of cantilever piezoelectric energy harvester were tested respectively with the cantilever tip amplitude 2mm and 4ram. The results showed that the maximum output power of load resistance is 38.6 p,W and 187 ~W respectively, meanwhile, the higher the excitation level is, the higher energy harvesting efiiciency of self-powered synchronized switch damping on inductor circuit would come under the normal vibration strength condition. Within the range of commonly used load resistance 200 k~800 kl~, the eftlciency in 4mm was 10% higher than that in 2ram.

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