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Dynamic parameters identification method for inductively coupled power transfer system

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6 Author(s)
Dai Xin ; Autom. Coll., Chongqing Univ., Chongqing, China ; Sun Yue ; Tang Chunsen ; Wang Zhihui
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In inductively coupled power transfer (ICPT) system, due to load and coupling parameters dynamic variation, primary resonant system parameters often drift from inherent operating point and lead to drastic decrease of power transfer capability and efficiency. In order to identify dynamically variation of system parameters, this paper put forwards system dynamics parameters identification method based on energy analysis. The method sets up energy supply, storage and dissipation function and energy equilibrium equations in primary resonant tank. And system reflection impedance solving function is given in analytic form as well. Furthermore, with the reflection impedance identification, this paper presents load parameters identification method. The identification methods are derived from energy perspective to avoid complex system modeling and requirements of high speed sampling system. Only zero crossing points sample data of resonant variables are required in system identification process. The identification is beneficial for system controller design. The identification methods are verified by experiments results.

Published in:

Sustainable Energy Technologies (ICSET), 2010 IEEE International Conference on

Date of Conference:

6-9 Dec. 2010