A Time-Based Direct MPPT Technique for Low-Power Photovoltaic Energy Harvesting | 정준원 교수 연구실 | 숙명여자대학교 전자공학과

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인용수 28

·2023

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

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

IF 7.5IEEE Transactions on Industrial Electronics

초록

This letter introduces a maximum power point tracking (MPPT) technique for photovoltaic (PV) energy harvesting (EH) systems to enhance the end-to-end efficiency ( <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">η E-E ) when the output power of PV cell ( <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">P PV,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 ( <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">P CTR ). The PV EH system with the proposed MPPT method is implemented in a 180-nm CMOS process. The <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">P CTR is 1.34 <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">μ W. The measured <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">η E-E at low <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">P PV,MAX (13 <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">μ W) is 88%. The measured peak <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">η E-E is 94.4% at 82 <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">μ W.

키워드

Maximum power point trackingPhotovoltaic systemComputer scienceMaximum power principlePower (physics)Electrical engineeringTopology (electrical circuits)PhysicsEngineeringThermodynamics

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article

IF / 인용수

7.5 / 28

원문

https://doi.org/10.1109/tie.2023.3288183

게재 연도

2023

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