气候变化领域集成服务门户(CCPortal): Maximizing power generation from ambient stray magnetic fields around smart infrastructures enabling self-powered wireless devices

CCPortal

DOI	10.1039/c9ee03902c
	Maximizing power generation from ambient stray magnetic fields around smart infrastructures enabling self-powered wireless devices
	Lee H.; Sriramdas R.; Kumar P.; Sanghadasa M.; Kang M.G.; Priya S.
发表日期	2020
ISSN	17545692
起始页码	1462
结束页码	1472
卷号	13 期号:5
英文摘要	Harvesting electrical energy from stray magnetic fields is appealing for development of a sustainable power source for Internet of Things (IoT) devices that are being implemented in the smart infrastructure. Stray magnetic fields are ubiquitous in buildings, but have fixed frequency (50/60 Hz) and low amplitude. Magnetoelectric (ME) coupled magneto-mechano-electric (MME) energy conversion is the most efficient way to convert these low frequency stray magnetic fields into electricity. However, currently reported ME coupled MME generators produce high output power only under relatively strong magnetic fields (≥500 μT), which are not available under practical conditions. Here a novel ME coupled MME generator has been demonstrated that provides 400% higher output power compared to the state-of-the-art, when operating below magnetic field levels of 100 μT. The optimized ME coupled MME generator produces milliwatt power below 300 μT stray magnetic field. The output power from extremely low magnetic fields (≤50 μT) is sufficient to power hundreds of light emitting diode (LED) arrays and operate a digital clock without charging a capacitor. By exploiting the harvested power near a home appliance, sustainable powering of sensors and a wireless communication system is demonstrated. Fundamental advancements from this work will provide a direction for deploying ME and MME generator driven self-powered IoT devices in smart infrastructures. © The Royal Society 2020 of Chemistry.
英文关键词	Conversion efficiency; Domestic appliances; Magnetic fields; Electrical energy; Internet of Things (IOT); Lightemitting diode(LED) array; Low magnetic fields; Smart infrastructures; Stray magnetic fields; Strong magnetic fields; Wireless communication system; Internet of things; detection method; equipment; magnetic field; performance assessment; power generation
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189727
作者单位	Center for Energy Harvesting and Systems (CEHMS), Virginia Tech, Blacksburg, VA 24061, United States; Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA 16802, United States; Aviation and Missile Center, U.S. Army Combat Capabilities Development Command, Redstone Arsenal, AL 35898, United States
推荐引用方式 GB/T 7714	Lee H.,Sriramdas R.,Kumar P.,et al. Maximizing power generation from ambient stray magnetic fields around smart infrastructures enabling self-powered wireless devices[J],2020,13(5).
APA	Lee H.,Sriramdas R.,Kumar P.,Sanghadasa M.,Kang M.G.,&Priya S..(2020).Maximizing power generation from ambient stray magnetic fields around smart infrastructures enabling self-powered wireless devices.Energy & Environmental Science,13(5).
MLA	Lee H.,et al."Maximizing power generation from ambient stray magnetic fields around smart infrastructures enabling self-powered wireless devices".Energy & Environmental Science 13.5(2020).