All-digital wireless power transmission frequency tracking control method

被引：0

作者：

Zhang X. ^{[1
]}

Ni H. ^{[1
]}

Chu Z.-Q. ^{[1
]}

Li F.-Z. ^{[1
]}

Li C.-Z. ^{[1
]}

机构：

[1] Tianjin Key Laboratory of Electrical Equipment Intelligent Control, Tiangong University, Tianjin

来源：

Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2022年 / 26卷 / 02期

关键词：

All-digital phase locked loop; Frequency tracking; Inductively coupled wireless power transmission; Transmission efficiency; Weak inductive; Zero voltage switch;

D O I：

10.15938/j.emc.2022.02.014

中图分类号：

学科分类号：

摘要：

Aiming at the problems of transmitted power and transmission efficiency in the process of wireless energy transmission and considering the frequency detuning control strategy, the traditional all digital phase locked loop is improved by analyzing the structure and mathematical model of the all digital phase locked loop, and an adaptive mode valued all digital phase locked loop with dynamic frequency division and dynamic time lag is designed based on FPGA. To ensure the efficiency of the system, the designed all digital phase locked loop can control the impedance angle of the system, which makes the system weakly inductive under different operating conditions and ensures that the power switching tubes operate in ZVS soft switching state. The voltage and current frequency and phase tracking were realized by FPGA, and an experimental prototype with 1 kW output power and adjustable operating frequency and impedance angle was built to verify the correctness of the theoretical analysis. The simulation and experimental results show that the method significantly improves the wireless energy transmission power and transmission efficiency, and enhances the stability of the system operation. © 2022, Harbin University of Science and Technology Publication. All right reserved.

引用

页码：131 / 141

页数：10

共 23 条

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