- Title
- A reconfigurable rectifier-based power improving method of free-standing two-coil magnetic field energy harvesters over a wide load range
- Creator
- Li, Yong; Yan, Yihua; Yang, Huanyu; Hu, Jiefeng; He, Zhengyou
- Date
- 2023
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/195876
- Identifier
- vital:18605
- Identifier
-
https://doi.org/10.1109/TPEL.2023.3238763
- Identifier
- ISSN:0885-8993 (ISSN)
- Abstract
- Free-standing magnetic field energy harvesters (FSMFEHs) have promising potential in charging sensors used in electrical power grids. The output power of the FSMFEH is highly dependent on the load resistance. However, the load resistance of the sensors varies over a wide range during the operation process. Therefore, a crucial challenge for an FSMFEH system is to maintain high output power over a wide load range. In this letter, an innovative reconfigurable rectifier-based FSMFEH system with two coils connected in parallel is proposed. First, a new structure of two identical coils in parallel is proposed in magnetic energy harvesting applications. Then, a reconfigurable rectifier with two operation modes is developed to incorporate the new coil structure. By switching between the full-bridge mode and the half-bridge mode according to the actual load demand, the proposed FSMFEH can maintain high output power over a wide load range. In addition, the mode transition can be easily achieved by shorting one of the diodes, leading to a simple and low-loss control. The effectiveness of the proposed FSMFEH system is verified based on a laboratory prototype. It is provided that the experimental result is consistent with the theoretical analysis. The output power can be maintained above 8.19 mW within the 50-1500
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Relation
- IEEE Transactions on Power Electronics Vol. 38, no. 5 (2023), p. 5638-5643
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- Copyright © 2022 IEEE
- Subject
- 4008 Electrical engineering; 4009 Electronics, sensors and digital hardware; Free-standing magnetic field energy harvester (FSMFEH); Power improving; Two-coil system; Wide load range
- Reviewed
- Funder
- This work is supported in part by Young Elite Scientist Sponsorship Program by China Association for Science and Technology, in part by the Star of Science and Technology in Southwest Jiaotong University under Grant 2682021CG018, in part by Young Eagle Program in Southwest Jiaotong University, in part by the Chengdu Guojia Electrical Engineering Company, Ltd. under Grant NEEC-2022-A07, in part by the Cutting-edge Science and Technology Cultivation Project of Southwest Jiaotong University under Grant 2682022KJ005, and in part by the Sichuan Science and Technology Innovation Programme under Grant 2022017.
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