Dual-Domain Maximum Power Tracking for Multi-Input RF Energy Harvesting with a Reconfigurable Rectifier Array

被引：5

作者：

Chen, Mu-Chun ^{[1
]}

Sun, Tsung-Wen ^{[1
]}

Tsai, Tsung-Heng ^{[1
]}

机构：

[1] Natl Chung Cheng Univ, Dept Elect Engn, Chaiyi 62102, Taiwan

来源：

ENERGIES | 2022年 / 15卷 / 06期

关键词：

adaptive impedance matching (AIM); energy harvesting; maximum power point tracking (MPPT); reconfigurable rectifier array; RF to DC; DC CONVERTER; DESIGN; SOLAR; MPPT;

D O I：

10.3390/en15062068

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This work proposes a dual-domain maximum power tracking (MPPT) technique for multiple-input RF energy harvesting systems. A differential rectifier array is used to implement 4-channel reconfigurable RF to DC power conversion, and an adjustable 4-bit capacitor array is designed to improve the impedance matching between the antennas and the rectifiers. Using the perturbation and observation (P&O) method, both arrays are adaptively configured in the background with the variations of the input energy and output loading. Experimental results show that the proposed circuit successfully tracks the maximum power points while harvesting RF energy, with the peak conversion efficiency of 49.06% when the input energy is -6 dBm. With the proposed dual-domain MPPT, the high efficiency range of the energy harvesting system is greatly extended to 21 dB (-21-0 dBm).

引用

页数：12

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