A high-efficiency charger with adaptive input ripple MPPT for low-power thermoelectric energy harvesting achieving 21% efficiency improvement

Junwon Jeong; Minseob Shim; Junyoung Maeng; Inho Park; Chulwoo Kim

doi:10.1109/TPEL.2019.2912030

A high-efficiency charger with adaptive input ripple MPPT for low-power thermoelectric energy harvesting achieving 21% efficiency improvement

Junwon Jeong, Minseob Shim, Junyoung Maeng, Inho Park, Chulwoo Kim

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

A high-efficiency charger for low-power thermoelectric energy harvesting with a method for improving the efficiency, which is called the adaptive input ripple (AIR) maximum power point tracking (MPPT) technique, is introduced in this paper. On the basis of the key finding that the end-to-end efficiency (η_E-E) is highly dependent on the amplitude of the input ripple of the charger (ΔV_IN) in the low-power region, the proposed AIR MPPT technique adjusts ΔV_IN to maximize η_E-E. Moreover, the minimum input power that allows the charger to maintain operation is enhanced by the proposed AIR MPPT technique. The proposed charger is implemented with 180-nm complementary metal oxide-semiconductor technology. An improvement of 21% in η_E-E is achieved with the proposed technique. Furthermore, the proposed technique enhances the minimum power by 7.5 μW. The startup power and minimum power of the prototype are 37 and 6 μW, respectively. The maximum η_E-E is 82%.

Original language	English
Article number	8693878
Pages (from-to)	347-358
Number of pages	12
Journal	IEEE Transactions on Power Electronics
Volume	35
Issue number	1
DOIs	https://doi.org/10.1109/TPEL.2019.2912030
Publication status	Published - 2020 Jan

Bibliographical note

Funding Information:
Manuscript received November 14, 2018; revised February 19, 2019; accepted April 4, 2019. Date of publication April 17, 2019; date of current version October 18, 2019. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) 2016RIEIAIA02922127. Recommended for publication by Associate Editor C. Fernandez (Corresponding author: Chulwoo Kim.) The authors are with the Department of Electrical Engineering, Korea University, Seoul 02841, South Korea (e-mail: [email protected]; sms@kilby. korea.ac.kr; [email protected]; [email protected]; [email protected]. ac.kr).

Publisher Copyright:
© 1986-2012 IEEE.

Keywords

Adaptive input ripple (AIR)
charger
energy harvesting
low power
maximum power point tracking (MPPT)
thermoelectric generator (TEG)

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/TPEL.2019.2912030

Cite this

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title = "A high-efficiency charger with adaptive input ripple MPPT for low-power thermoelectric energy harvesting achieving 21% efficiency improvement",

abstract = "A high-efficiency charger for low-power thermoelectric energy harvesting with a method for improving the efficiency, which is called the adaptive input ripple (AIR) maximum power point tracking (MPPT) technique, is introduced in this paper. On the basis of the key finding that the end-to-end efficiency (ηE-E) is highly dependent on the amplitude of the input ripple of the charger (ΔVIN) in the low-power region, the proposed AIR MPPT technique adjusts ΔVIN to maximize ηE-E. Moreover, the minimum input power that allows the charger to maintain operation is enhanced by the proposed AIR MPPT technique. The proposed charger is implemented with 180-nm complementary metal oxide-semiconductor technology. An improvement of 21% in ηE-E is achieved with the proposed technique. Furthermore, the proposed technique enhances the minimum power by 7.5 μW. The startup power and minimum power of the prototype are 37 and 6 μW, respectively. The maximum ηE-E is 82%.",

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note = "Funding Information: Manuscript received November 14, 2018; revised February 19, 2019; accepted April 4, 2019. Date of publication April 17, 2019; date of current version October 18, 2019. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) 2016RIEIAIA02922127. Recommended for publication by Associate Editor C. Fernandez (Corresponding author: Chulwoo Kim.) The authors are with the Department of Electrical Engineering, Korea University, Seoul 02841, South Korea (e-mail: [email protected]; sms@kilby. korea.ac.kr; [email protected]; [email protected]; [email protected]. ac.kr). Publisher Copyright: {\textcopyright} 1986-2012 IEEE.",

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A high-efficiency charger with adaptive input ripple MPPT for low-power thermoelectric energy harvesting achieving 21% efficiency improvement

Abstract

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Keywords

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