A Magnetoelectric Energy Harvester and Management Circuit
نویسندگان
چکیده
This paper proposes an H-type magnetoelectric (ME) composite structure consisting of a fork Fe-Ni magnetostrictive substrate and PZT piezoelectric plates. The fork composite structure has a higher ME voltage coefficient and a higher ME power output relative to other ME composite structures due to its higher quality (Q) factor. The fork composite structure can obtain an output power of 61μW at an ac magnetic field of 0.2Oe. In order to increase the output power, a new power management circuit is presented, which can collect/store the energy in a long time and release the energy for driving load in a short time. Experiments show that the instantaneous discharge circuit can drive a WSN node with an output power of 75mW at a distance of over 60m.
منابع مشابه
A Management Circuit for Vibrating Energy Harvester
A piezoelectric/magnetostrictive composite vibrating energy generator is introduced, and its output characteristic is analyzed. In order to increase the maximum output power of the vibrating energy harvester, a new up-conversion matching circuit is proposed, which can change the low frequency vibrating signal into a narrow bandwidth signal focused on a higher frequency. The matching circuit wit...
متن کاملEnergy Harvesting from Fluid Flow in Water Pipelines for Smart Metering Applications
In this paper a rotational, radial-flux energy harvester incorporating a three-phase generation principle is presented for converting energy from water flow in domestic water pipelines. The energy harvester together with a power management circuit and energy storage is used to power a smart metering system installed underground making it independent from external power supplies or depleting bat...
متن کاملSmart Adaptive Power Management in Electrostatic Harvester of Vibration Energy
This paper reports a new functional design and modeling of a vibration energy harvester composed from a mechanical resonator (MEMS), capacitive transducer and a conditioning circuit based on the BUCK DCDC converter architecture. The basic configuration of conditioning circuit from [1][2] is enhanced with two major features for the power management allowing, firstly, to adapt dynamically to the ...
متن کاملA Shoe-Embedded Piezoelectric Energy Harvester for Wearable Sensors
Harvesting mechanical energy from human motion is an attractive approach for obtaining clean and sustainable electric energy to power wearable sensors, which are widely used for health monitoring, activity recognition, gait analysis and so on. This paper studies a piezoelectric energy harvester for the parasitic mechanical energy in shoes originated from human motion. The harvester is based on ...
متن کاملMicrofabrication and Integration of a Sol-Gel PZT Folded Spring Energy Harvester
This paper presents the methodology and challenges experienced in the microfabrication, packaging, and integration of a fixed-fixed folded spring piezoelectric energy harvester. A variety of challenges were overcome in the fabrication of the energy harvesters, such as the diagnosis and rectification of sol-gel PZT film quality and adhesion issues. A packaging and integration methodology was dev...
متن کامل