Impedance matching design of magnetically coupled resonant wireless power transmission based on class E power amplifier

Tianjian Su; Xiangfei Meng; Xingming Fan

doi:10.1117/12.3026551

1 April 2024 Impedance matching design of magnetically coupled resonant wireless power transmission based on class E power amplifier

Tianjian Su, Xiangfei Meng, Xingming Fan

Author Affiliations +

Proceedings Volume 13082, Fourth International Conference on Mechanical Engineering, Intelligent Manufacturing, and Automation Technology (MEMAT 2023); 1308211 (2024) https://doi.org/10.1117/12.3026551
Event: 2023 4th International Conference on Mechanical Engineering, Intelligent Manufacturing and Automation Technology (MEMAT 2023), 2023, Guilin, China

Abstract

The theoretical efficiency of class E power amplifier can reach 100 %，it is often used as a power module for magnetically coupled resonant wireless power transmission systems. In practical work, the equivalent load of MCR-WPT system may deviate from the theoretical design value of class E power amplifier, it will affects the operating characteristics of the power amplifier and Causes the system transmission efficiency to drop. To solve this problem, an automatic impedance matching method for tracking the real-time change of load is proposed. First of all, based on Smith chart theory, an L-shaped matching network covering global matching is constructed, and an improved particle swarm optimization algorithm is proposed, It shows that the algorithm is superior to the traditional algorithm in matching accuracy and stability, Perfect matching can be achieved after a few iterations. Finally, it is proved that this method has certain application value in impedance matching design.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Tianjian Su, Xiangfei Meng, and Xingming Fan "Impedance matching design of magnetically coupled resonant wireless power transmission based on class E power amplifier", Proc. SPIE 13082, Fourth International Conference on Mechanical Engineering, Intelligent Manufacturing, and Automation Technology (MEMAT 2023), 1308211 (1 April 2024); https://doi.org/10.1117/12.3026551

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