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| Analysis and Verification of Energy Flow Model of Magnetic Resonant Coupled Wireless Power Transfer System |
| Zhu Jiahui1, Liu Zhifang1, Gao Qiang2, Liu Qi2, Pan Jiayu3 |
1. China Electric Power Research Institute Beijing 100192 China;
2. Electric Power Research Institute of State Grid Liaoning Electric Power Co. Ltd Shenyang 110006 China;
3. Liaoning Dongke Power Co. Ltd Shenyang 110179 China |
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Abstract Circuit theory or coupled-mode theory is generally used for analyzing the principle of magnetic coupled resonant wireless power transfer (WPT). However, both methods cannot describe the time-domain energy state of the system and components. Therefore, an energy flow model applying circuit theory and coupled-mode theory is proposed in this paper. Firstly, a basic energy flow model of WPT is set up based on SS type compensation structure. Then it is simulated and verified by comparing with the circuit model and coupled mode model using Matlab and ADS software. Finally, the prototype is built. The experimental results are consistent with the theoretical results, which verified the correctness of the model. Moreover, the results show that the energy flow model can describe the working mechanism of the WPT system more clearly, which provides a more comprehensive and intuitive theoretical basis for the optimal design of the WPT system.
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Received: 22 June 2018
Published: 30 October 2019
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2019, Vol. 34 
