Maximum Output Power Point Tracking for Low Power Photovoltaic Energy Harvesting Systems
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ISBN: 979-8-3503-3265-0
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Abstract
A novel approach for finding the maximum output power point of a photovoltaic energy harvesting system is proposed in this paper. It is based on maximizing the power delivered to the load taking into account the performance of the whole system in contrast to conventional approaches focused on tracking the maximum power point of the photovoltaic transducer alone. The output power tracking is performed by measuring the output voltage, which significantly simplifies the hardware complexity and consequently reduces the power consumption. A circuit implementation of the entire system is presented and validated using electrical simulations. The designed circuit is self powered and is able to successfully supply a load with voltage levels higher than 1.2V. The system achieves a peak efficiency of 80.51% when the input power is equal to 28.03 μW.
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Neste artigo propóñese unha nova estratexia para atopar o punto de máxima potencia de saída dun sistema de captación de enerxía fotovoltaica. Baséase en maximizar a potencia entregada á carga tendo en conta o rendemento de todo o sistema, en contraste coas estratexias convencionais centradas no seguimento do punto de máxima potencia do transdutor fotovoltaico só. O seguimento da potencia de saída realízase medindo a tensión de saída, o que simplifica significativamente a complexidade do hardware e, en consecuencia, reduce o consumo de enerxía. Preséntase unha implementación de circuíto de todo o sistema e valídase mediante simulacións eléctricas. O circuíto deseñado é autoalimentado e é capaz de subministrar correctamente unha carga con niveis de tensión superiores a 1,2 V. O sistema alcanza unha eficiencia máxima do 80,51 % cando a potencia de entrada é igual a 28,03 μW.
Bibliographic citation
L. Vicente-García, Ó. Pereira-Rial and P. López, "Maximum Output Power Point Tracking for Low Power Photovoltaic Energy Harvesting Systems," 2023 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (SMACD), Funchal, Portugal, 2023, pp. 1-4, doi: 10.1109/SMACD58065.2023.10192228
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https://doi.org/10.1109/SMACD58065.2023.10192228Sponsors
Xunta de Galicia-Consellería de Cultura, Educación e Ordenación Universitaria
Ministerio de Ciencia, Innovación y Universidades
FEDER
Ministerio de Ciencia, Innovación y Universidades
FEDER
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