73.5 uW Indoor-Outdoor Light Harvesting System with Global Maximum Power Point Tracking
| Autor: | V. Konstantakos, Ioannis Sofianidis, Stylianos Siskos, Konstantinos Kozalakis, Kostas Siozios |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Battery (electricity)
IoT Computer science 020209 energy 02 engineering and technology Tracking (particle physics) outdoor Maximum power point tracking Range (aeronautics) boost converter 0202 electrical engineering electronic engineering information engineering Indoor outdoor Electrical and Electronic Engineering indoor low energy harvesting global MPPPT business.industry 020208 electrical & electronic engineering Electrical engineering lcsh:Applications of electric power lcsh:TK4001-4102 battery management maximum power point tracking Power (physics) Microcontroller Boost converter business light |
| Zdroj: | Journal of Low Power Electronics and Applications, Vol 11, Iss 10, p 10 (2021) Journal of Low Power Electronics and Applications Volume 11 Issue 1 |
| ISSN: | 2079-9268 |
| Popis: | This work introduces a light harvesting system with battery management. In contrast to relevant solutions that operate in limited ranges, the proposed system covers a wide operating input power range from 10 uW up to 300 mW. Specifically, experimental results highlight that, combined with a 73 × 94 mm flexible light harvester, it can harness light in a range from 50 LUX (indoor lighting) up to 120,000 LUX (outdoor lighting). The introduced system consists of a boost converter and an ultra-low power microcontroller (MCU). The MCU performs Global Maximum Power Point Tracking (GMPPT), using a resistor-free time-based input power sensing method, to calculate the input power of the converter, which does not interfere with the operation of the boost converter. The efficiency of the GMPPT system was evaluated with detailed experimentation, where we achieved 99.75% average GMPPT tracking efficiency while consuming only 73.5 uW at 4.2 V. |
| Databáze: | OpenAIRE |
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