A Sustainable Soil Energy Harvesting System With Wide-Range Power-Tracking Architecture
| Autor: | Yu Lee, Jia-Ping Yang, Kai-Jie Huang, Chia-Hung Liu, Yuan-Hua Chu, Kun-Ju Tsai, I-Che Ou, Yu-Te Liao |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Power management
Battery (electricity) Computer Networks and Communications Computer science 02 engineering and technology Power management integrated circuit Maximum power point tracking 0202 electrical engineering electronic engineering information engineering Energy supply Environmental energy Water content business.industry 020208 electrical & electronic engineering Electrical engineering 021001 nanoscience & nanotechnology Computer Science Applications Power (physics) Hardware and Architecture Signal Processing 0210 nano-technology Energy source business Energy harvesting Energy (signal processing) Information Systems Voltage |
| Zdroj: | IEEE Internet of Things Journal. 6:8384-8392 |
| ISSN: | 2372-2541 |
| DOI: | 10.1109/jiot.2019.2917593 |
| Popis: | For wide-range deployment of wireless sensing nodes in power- and size-constrained Internet of Things applications, self-sustaining wireless sensors without batteries are needed. The energy supply for these ubiquitous sensing devices should harness environmental energy sources to avoid frequent battery replacement and pollution. This paper presents a new soil energy harvesting system with a power management integrated circuit (IC) for wide-range maximum power point tracking (MPPT). The output power of a soil energy cell varies widely according to the soil moisture and soil contents. To extract the maximum amount of energy from the soil, high-efficiency power management with adaptive dc–dc conversion ratios and an MPPT mechanism is essential. The proposed system is implemented with a high-efficiency dc–dc converter IC in a 0.18- ${\mu }\text{m}$ CMOS process. The design achieves a peak tracking efficiency of 90.5% in the throughput power range from 56 $\mu \text{W}$ to 1 mW at an output voltage of 3 V and system efficiency exceeding 65% over an input resistance range of the soil energy source; the peak system efficiency is 73.9%. A demonstration was undertaken of the soil energy harvesting system lighting an LED array without any chemical batteries. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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