A5024998660- Wireless Power Transfer Systems
- Energy Harvesting in Wireless Networks
- Innovative Energy Harvesting Technologies
- Magnetic Field Sensors Techniques
Southwest Jiaotong University
2022-2024
To reduce the size and weight of magnetic energy harvester (MEH), core should be designed to work in maximum power region, i.e., saturated region. However, conventional analysis model MEH, which ignores phase difference between primary secondary currents, is only suitable for unsaturated When results numerical calculation severely deviate from experimental observations due non-negligible difference. address this vital problem, article establishes an excitation current (ECM) calculate caused...
Increasing the power harvested from magnetic field energy harvesters (MFEHs) without expanding their volumes is crucial. Conventional methods for improving harvest, e.g., flux-shaping capacitor and transfer window alignment techniques, are not applicable under varying primary current load conditions. To address this vital problem, in article, we present a control strategy of MFEHs based on impedance-matching theory, which considers nonlinear characteristic sources can track maximum...
The wide-range traction current brings great challenges to the stable operation of magnetic field energy harvester (MFEH). Specifically, when is large, core saturation increases, resulting in violent vibrating core. When low, harvested by MFEH insufficient power load. To address these vital problems, an management method for proposed track critical point, i.e., maximum point unsaturated region. In this method, regulating equivalent load, voltage controlled at under different levels....
The low power density of a magnetic field energy harvester (MFEH) limits its applicability. Conventional methods for improving harvesting, e.g., increasing the volume core, cannot effectively increase output MFEH. And it increases burden on transmission lines. An in-depth investigation reveals that by adding an optimal series-connected capacitor before rectifier, MFEH can be maximized. By reducing net voltage applied to magnetizing inductance, flux accumulation is slower, lengthening...