.png){kind=icon}
返回
Phase Retrieval-Based Z Parameter Estimation Method for Multiple-Input Multiple-Output Wireless Power Transfer Systems
.png){kind=icon}
OA
AI
DOI：10.1109/ACCESS.2023.3334222.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Multiple-input multiple-output (MIMO) wireless power transfer (WPT) systems present various advantages to users, including improved power transfer efficiency, adjustable transmission power, and reduced magnetic field leakage. An essential aspect of controlling MIMO WPT systems is the estimation of Z parameters, which characterize the behavior of the linear electrical network in these systems. In this study, we propose a method to estimate all elements of the Z parameters without requiring synchronization between the transmitters and receivers. Instead, the elements are estimated based on the measured complex amplitudes of voltage and current at the transmitters, as well as the direct current (DC) at the output of the full-bridge rectifiers on the receivers. Importantly, all these measurements can be obtained at a minimal cost. Further, circuit simulations and experiments are also conducted to evaluate the performance of the proposed method. Specifically, a 2 x 2 MIMO WPT system is employed for the circuit simulations and experiments, and the Z parameters are estimated under various receiver position conditions. The evaluation of the simulation and experimental results is based on the power transmission efficiency of the system, considering the estimated Z parameters. The simulation and experimental results demonstrate that the difference between the power transfer efficiency based on the estimated Z parameters and the theoretical maximum efficiency based on the true Z parameters is found to fall within the range of 0.06 % and 0.4 %, respectively.
Keyword:
Receivers
Transmitters
Voltage measurement
MIMO communication
Current measurement
Rectifiers
Estimation
Inductive power transmission
Parameter estimation
Wireless power transfer
Inductive power transfer
multiple-input multiple-output (MIMO)
phase retrieval
parameter estimation
wireless power transfer
Z parameters
期刊
IF:
3.6
论文数:
9.8W
被引数:
29.4W
机构
引用论文
Electronic and optoelectronic properties of van der Waals heterostructure based on graphene-like GaN, blue phosphorene, SiC, and ZnO: A first principles study基于类石墨烯GaN，蓝色磷烯，SiC和ZnO的范德华异质结构的电子和光电性质: 第一性原理研究
.png){kind=icon}
PREAI
分享收藏分享收藏Multiuser Wireless Power Transfer via Magnetic Resonant Coupling: Performance Analysis, Charging Control, and Power Region Characterization通过磁谐振耦合的多用户无线功率传输: 性能分析，充电控制和功率区域表征
OAAI
OAAI分享收藏
查看更多内容