An Adaptive TE-PV Hybrid Energy Harvesting System for Self-Powered IoT Sensor Applications

Sensors

SiehKiong Tiong¹  Md. Rokonuzzaman¹  Mohammad Shakeri¹  Nowshad Amin¹  MahmudaKhatun Mishu¹  Jagadeesh Pasupuleti¹  Shuza Binzaid²  KaziSajedur Rahman³ 

[1] Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional, Kajang 43000, Selangor, Malaysia;Smart Microgrid Advanced Research and Technology (SMART) Center, Department of Electrical and Computer Engineering, Prairie View A&M University, Prairie View, TX 77446, USA;Solar Energy Research Institute, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia;

关键词: energy harvesting (EH);    hybrid energy harvesting (HEH);    solar photovoltaic;    thermoelectric;    internet of things (IoT);    wireless sensor networks (WSNs);   

DOI  :  10.3390/s21082604

来源: DOAJ

【 摘 要 】

In this paper, an integrated thermoelectric (TE) and photovoltaic (PV) hybrid energy harvesting system (HEHS) is proposed for self-powered internet of thing (IoT)-enabled wireless sensor networks (WSNs). The proposed system can run at a minimum of 0.8 V input voltage under indoor light illumination of at least 50 lux and a minimum temperature difference, ∆T = 5 °C. At the lowest illumination and temperature difference, the device can deliver 0.14 W of power. At the highest illumination of 200 lux and ∆T = 13 °C, the device can deliver 2.13 W. The developed HEHS can charge a 0.47 F, 5.5 V supercapacitor (SC) up to 4.12 V at the combined input voltage of 3.2 V within 17 s. In the absence of any energy sources, the designed device can back up the complete system for 92 s. The sensors can successfully send 39 data string to the webserver within this time at a two-second data transmission interval. A message queuing telemetry transport (MQTT) based IoT framework with a customised smartphone application ‘MQTT dashboard’ is developed and integrated with an ESP32 Wi-Fi module to transmit, store, and monitor the sensors data over time. This research, therefore, opens up new prospects for self-powered autonomous IoT sensor systems under fluctuating environments and energy harvesting regimes, however, utilising available atmospheric light and thermal energy.

【 授权许可】

Unknown