Energy transfer mechanism analysis of MCR-WPT based on the theory of waves

2018 International Conference on New Energy and Future Energy System

Wen, D.Z.^1 ; Li, Z.Y.^1 ; Chen, Y.G.^1 ; Liu, L.M.^1

School of Information Science and Engineering, Central South University, Hunan Province Changsha

410083, China^1

关键词: Carrier frequency;    Different frequency;    Energy transfer mechanisms;    Linear superpositions;    Modulation frequencies;    Modulation waves;    Transmitter and receiver;    Wireless power transfer;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/188/1/012058/pdf
DOI  :  10.1088/1755-1315/188/1/012058

来源: IOP

【 摘 要 】

In a magnetic coupling resonant wireless power transfer (MCR-WPT) system, energy is transferred between transmitter and receiver coils with same natural resonant frequency ω 0. Studying energy transfer mechanism is the theoretical basis of MCR-WPT control. This paper takes the MCR-WPT system with two coils as the research object. Firstly, the model of the system is established. Then, combined with the theory of waves, the change of the capacitor charge of the two resonant circuits is analysed, which is drawn up during the linear superposition of two different frequency modes and is also a modulation wave with a specific system resonant frequency ωs as the carrier frequency and ω Δ as the modulation frequency. Where ωs is different from ω 0. Next, the energy of the two resonant circuits is analysed, which is transferred with the beat frequency 2ω Δ. Finally, ANSYS Simplorer and Maxwell co-simulation is used to verify the correctness of the theory of this paper.