A dynamic modelling method for dynamic wireless charging system of electric vehicles based on dual LCL non-resonant compensation
by Huang Xiaohua; Wei Bin; Gao Chao; Wu Xiaokang; Xu Jinxing
International Journal of Computer Applications in Technology (IJCAT), Vol. 61, No. 1/2, 2019

Abstract: This paper starts with a mutual inductance coupling model and takes compensation structure of 'series connection-series connection' as an example to respectively deduce the mathematical expressions for system output power and efficiency when traditional resonant compensation strategy and non-resonant compensation strategy are adopted, so as to compare the advantages and disadvantages of the two strategies from the aspect of influence of coupling coefficient change on the output power and efficiency. Then, to cope with the drawbacks of non-resonant compensation strategy, a dynamic modelling method for electromobile's dynamic wireless charging system based on dual-LCL non-resonant compensation is proposed to analyse the structure's function of improving the system's power transmission capacity and determination method of different component parameters from the perspectives of circuit equivalence and impedance conversion. Models are built for rectifier and filter circuit, DC-DC circuit and loading battery pack for receiving terminal, and the characteristics of each link are expressed mathematically.

Online publication date: Fri, 06-Sep-2019

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