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 uW range and achieves a peak power conversion efficiency of 79.04% at 30.74 uW output.
keywords: Energy Harvesting, MPPT, DC-DC converter
Publication: Article
1700645568178
November 22, 2023
/research/publications/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 uW range and achieves a peak power conversion efficiency of 79.04% at 30.74 uW output. - Laura Vicente-García, Óscar Pereira-Rial, Paula López - 10.1016/j.aeue.2023.154956
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