A Time-Based Direct MPPT Technique for Low-Power Photovoltaic Energy Harvesting

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

doi:10.1109/TIE.2023.3288183

A Time-Based Direct MPPT Technique for Low-Power Photovoltaic Energy Harvesting

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

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

11 Scopus citations

Abstract

This letter introduces a maximum power point tracking (MPPT) technique for photovoltaic (PV) energy harvesting (EH) systems to enhance the end-to-end efficiency (ηE-E) when the output power of PV cell (PPV,MAX) is low. A ripple-based PV cell current sensing and a time-domain multiplication are proposed to monitor the PV cell power delivered to the charger, which reduces the controller power consumption (PCTR). The PV EH system with the proposed MPPT method is implemented in a 180-nm CMOS process. The PCTR is 1.34 μW. The measured ηE-E at low PPV,MAX (13 μW) is 88%. The measured peak ηE-E is 94.4% at 82 μW.

Original language	English
Pages (from-to)	5375-5380
Number of pages	6
Journal	IEEE Transactions on Industrial Electronics
Volume	71
Issue number	5
DOIs	https://doi.org/10.1109/TIE.2023.3288183
State	Published - 1 May 2024

Bibliographical note

Publisher Copyright:
© 1982-2012 IEEE.

Keywords

Low-power energy harvesting
maximum power point trackers (MPPT)
time-based (TB) MPPT

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/TIE.2023.3288183

Cite this

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abstract = "This letter introduces a maximum power point tracking (MPPT) technique for photovoltaic (PV) energy harvesting (EH) systems to enhance the end-to-end efficiency (ηE-E) when the output power of PV cell (PPV,MAX) is low. A ripple-based PV cell current sensing and a time-domain multiplication are proposed to monitor the PV cell power delivered to the charger, which reduces the controller power consumption (PCTR). The PV EH system with the proposed MPPT method is implemented in a 180-nm CMOS process. The PCTR is 1.34 μW. The measured ηE-E at low PPV,MAX (13 μW) is 88%. The measured peak ηE-E is 94.4% at 82 μW.",

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AU - Kim, Chulwoo

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A Time-Based Direct MPPT Technique for Low-Power Photovoltaic Energy Harvesting

Abstract

Bibliographical note

Keywords

UN SDGs

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