4.8 Article

A New Simplified Method and Design Guidelines for the Optimization of Push-Pull Class Phi(2) Converters for Wireless Power Transfer Applications

Journal

IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 38, Issue 8, Pages 10442-10459

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2023.3272840

Keywords

MHz; resonant power converters; wireless power transfer (WPT); zero-voltage switching (ZVS); zero-voltage-derivative switching (ZDS)

Ask authors/readers for more resources

This article widens the design options of push-pull class Phi(2) converters through frequency-harmonic analysis, providing ample space for optimization based on any required performance indices. Six numerical equations are found to fully decouple the interconnected relations between each circuit parameter and the duty cycle D. The proposed design method is validated through an example wireless power transfer system.
The complicated resonant operations of class Phi(2) topology bring challenges for accurate design and performance optimization, hindering the full utilization potential of converters. Considering the narrowdesign freedom in traditionalmethods with almost fixed duty cycle D, this article widens the design options of push-pull class Phi(2) converters through frequency-harmonic analysis. A full selection freedom of D is an element of(0, 0.5) is discussed analytically, providing ample space for optimization based on any required performance indices. From 1.98E5 analytical results, we found six numerical equations that fully decouple the interconnected relations between each circuit parameter and D. The proposed numerical method allows rapid circuit design and component selection with a high accuracy regardless of the system power or load voltage. Parasitic effects are discussed and incorporated into the design approach as correction steps. Finally, we introduce performance analysis based on an example wireless power transfer (WPT) system, providing in-depth studies on the optimization regarding efficiency, power output capability, and component selection. Experimental results validate the accuracy and efficiency of the proposed design method based on a 100-W WPT system at 6.78 MHz frequency. Both inverter and rectifier present load-independent soft-switching operations, with converter efficiency over 93%. The system provides 83% dc-dc efficiency at full load.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.8
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available