{"title":"Dual-Source Energy Harvesting System using TDM with Dynamic MPPT and Wide-Range ZCS","authors":"Yehia Hamdy Yehia, H. Omran, S. Ibrahim","doi":"10.1109/ICCES.2018.8639404","DOIUrl":null,"url":null,"abstract":"This paper presents an efficient dynamic technique for energy combining from thermoelectric generators (TEG) and piezoelectric transducers (PZ). A dual-source maximum-power-point-tracking (MPPT) unit working in analogues way to phase-locked loops (PLL) is proposed. The dynamic MPPT achieves global maximum power extraction by matching both sources impedance varying from 1.5 Ω to 43 Ω for a thermoelectric generator cell and from 2 kΩ to 44 kΩ for a piezoelectric cell with only 2% power loss. A wide-range zero-current-switching (WR-ZCS) circuit is proposed to tune inductor discharging time with a good resolution using a digitally-tuned delay cell providing 30 ns and 100 ns delays. With an output control unit and with the aid of a kick start voltage a self-biased operation is obtained while the output voltage is regulated at 2.5 V.","PeriodicalId":113848,"journal":{"name":"2018 13th International Conference on Computer Engineering and Systems (ICCES)","volume":"182 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 13th International Conference on Computer Engineering and Systems (ICCES)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICCES.2018.8639404","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
This paper presents an efficient dynamic technique for energy combining from thermoelectric generators (TEG) and piezoelectric transducers (PZ). A dual-source maximum-power-point-tracking (MPPT) unit working in analogues way to phase-locked loops (PLL) is proposed. The dynamic MPPT achieves global maximum power extraction by matching both sources impedance varying from 1.5 Ω to 43 Ω for a thermoelectric generator cell and from 2 kΩ to 44 kΩ for a piezoelectric cell with only 2% power loss. A wide-range zero-current-switching (WR-ZCS) circuit is proposed to tune inductor discharging time with a good resolution using a digitally-tuned delay cell providing 30 ns and 100 ns delays. With an output control unit and with the aid of a kick start voltage a self-biased operation is obtained while the output voltage is regulated at 2.5 V.
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