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A Reconfigurable DC-DC Converter Design for Energy-harvesting System
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[1]Zhou Kunyu,Yue Ningning,Qiu Keni,et al.A Reconfigurable DC-DC Converter Design for Energy-harvesting System[J].Journal of Zhengzhou University (Engineering Science),2021,42(04):70-76.[doi:10.13705/j.issn.1671-6833.2021.04.023]
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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 42 Number of periods: 2021 04 Page number: 70-76 Column: Public date: 2021-07-30
Title:
A Reconfigurable DC-DC Converter Design for Energy-harvesting System
Author(s):
Zhou Kunyu; Yue Ningning; Qiu Keni;
School of Information Engineering, Capital Normal University;
Keywords:
CLC:
-
DOI:
10.13705/j.issn.1671-6833.2021.04.023
Abstract:
Compared with a traditional battery-powered system,an energy harvesting system that could harvest energy from environment has the advantages of green economy,with no necessity of replacing or recharging betteries,etc.It had become a hot research topic in the field of Internet of Things.Targeting the "harvest-store-use" architecture of energy-harvesting system,a DC-DC converter,between the storage capacitor and the load,was essential to energy conversion efficiency,and further impact the performance and energy efficiency of the entire system.So it was a key issue to balance the relationship of the discharge voltage of the storage capacitor and the load in order to achieve high energy conversion efficiency.To address this issue,this paper proposed a reconfigurable DC-DC converter design for energy-harvesting computing-in-memory (CIM)system.Firstly,the conversion efficiency was fitted utilizing curve fitting.Then,according to the fitted data,the voltage interval of the best conversion efficiency for each DC-DC converter was calculated to guide the selection of the switch capacitor to the boost ratio.Finally,based on experiments on the accelerator load,which was on top of RRAM crossbar,the relationship between the discharge voltage of capacitor as well as the RRAM load and the DC-DC conversion efficiency were quantitatively analyzed.The experimental results showed that the maximum conversion efficiency and average conversion efficiency of the proposed reconfigurable DC-DC converter could reach 87.93% and 78.49% respectively,providing a wider range of input voltage,a higher conversion efficiency,and a theoretical basis for future optimizations on adaptive load schedule.
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Last Update: 2021-08-26
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