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Maximum output power point tracking for photovoltaic energy harvesting systems: Mathematical model and circuit implementation
Maximizing the power transferred to the load is a key feature in any energy harvesting system. Contrary to traditional approaches, this paper mathematically demonstrates that performing a maximum power point tracking on the power delivered to the load instead of on the photogenerated power allows to harvest up to 25% more power due to setting less demanding operating conditions. A circuit implementation of a system that successfully maximizes its output by exclusively taking measurements of the output voltage is designed and demonstrated using a 180 nm commercial CMOS process. The system operates at μW range and achieves a peak power conversion efficiency of 79.04% at 30.74 μW output ; This work has been funded by the Spanish Ministry of Science, Innovation and Universities under grant PID2021-128009OB-C32; from Xunta de Galicia-Consellería de Cultura, Educación e Ordenación Universitaria Accreditation 2019–2022 ED431G-2019/04 and Reference Competitive Group Accreditation 2021–2024 ED431C2021/048, co-funded by (ERDF/FEDER programme) ; SI
Maximum output power point tracking for photovoltaic energy harvesting systems: Mathematical model and circuit implementation
Maximizing the power transferred to the load is a key feature in any energy harvesting system. Contrary to traditional approaches, this paper mathematically demonstrates that performing a maximum power point tracking on the power delivered to the load instead of on the photogenerated power allows to harvest up to 25% more power due to setting less demanding operating conditions. A circuit implementation of a system that successfully maximizes its output by exclusively taking measurements of the output voltage is designed and demonstrated using a 180 nm commercial CMOS process. The system operates at μW range and achieves a peak power conversion efficiency of 79.04% at 30.74 μW output ; This work has been funded by the Spanish Ministry of Science, Innovation and Universities under grant PID2021-128009OB-C32; from Xunta de Galicia-Consellería de Cultura, Educación e Ordenación Universitaria Accreditation 2019–2022 ED431G-2019/04 and Reference Competitive Group Accreditation 2021–2024 ED431C2021/048, co-funded by (ERDF/FEDER programme) ; SI
Maximum output power point tracking for photovoltaic energy harvesting systems: Mathematical model and circuit implementation
doi:10.1016/j.aeue.2023.154956
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
DDC:
690
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