Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 37, Issue 11, Pages 13946-13954Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2022.3182346
Keywords
Rectifiers; resonant power conversion; synchronization; synchronous detection
Categories
Funding
- National Science Foundation [ECCS-2045239]
Ask authors/readers for more resources
In this article, a self-synchronized, high-frequency class E resonant rectifier is proposed to compensate for the synchronization signal mismatch due to the propagation delay. The design creates a proper gate signal to the active device in the rectifier by measuring the voltage of the node between C-s-L-s resonant filter. The experiments validate the feasibility of the method.
In this article, a self-synchronized, high-frequency class E resonant rectifier is proposed to compensate for the synchronization signal mismatch due to the propagation delay. The synchronous rectification helps the power conversion system increase its efficiency by using active devices such as MOSFETS instead of diodes. Even with the MOSFETS, it is still challenging to generate an accurate synchronous signal from the input source in the multi-MHz wireless power transfer (WPT) systems due to the propagation delay from the integrated circuit (IC) components and the gate driver. In general, the propagation delay is more than 10 ns, a significant period in the multi-MHz operation. To mitigate the propagation delay, we present the self-synchronized rectifier, sensing the signal in the C-s-L-s network. The proposed design creates a proper gate signal to the active device in the rectifier by measuring the voltage of the node between C-s-L-s resonant filter. In the experiments, we tested the driving method in the class E rectifier at an output power of 228 W and a switching frequency of 13.56 MHz. While the total propagation delay was 8 ns, including the gate-driver and comparator, the leading phase of the sensing voltage successfully offsets the driver's propagation delay.
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