Journal
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Volume 68, Issue 12, Pages 12119-12129Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2020.3040666
Keywords
Rectifiers; Capacitors; Topology; Switches; Impedance; Coils; Voltage control; Active switched-capacitor rectifier; constant voltage; soft-switching; wireless power transfer (WPT)
Categories
Funding
- Fujian Province Outstanding Youth Fund [2018J06016]
- Natural Science Foundation of China [61671400, 62071406]
Ask authors/readers for more resources
This article proposes a new switched-capacitor-based half-wave rectifier topology to effectively address the issue of output power fluctuations in wireless power transfer systems. Compared with traditional methods, this topology uses fewer components, achieves soft-switching, while reducing costs, increasing power density, and efficiency.
There is an increasing attention on wireless power transfer (WPT) technology in many applications. However, for WPT systems, the changing coils distance and variable load make the output power fluctuant. In this article, a switched-capacitor-based half-wave rectifier with active impedance matching ability is proposed in the WPT system to solve the issue. Different from typical half-wave rectifier, the conducting time of the diode in the proposed topology becomes adjustable, making the equivalent impedance controllable. Compared with the universal methods, where an additional dc-dc converter located at the end of the rectifier for power adjustment, fewer components are employed and soft-switching is achieved for the rectifier switch in the proposed topology, leading to lower cost, higher power density, and higher efficiency. In the theoretical analysis, the operation principle is given and the relationship between the diode conducting time and the equivalent load is obtained. A prototype was built to verify the performance of the proposed topology, the experiments agree with the calculation well.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available