Dynamic parameters identification method for inductively coupled power transfer system
Dynamic parameters identification method for inductively coupled power transfer system
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DOI：
10.1109/icset.2010.5684445
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发表时间：
2010-12
期刊：
影响因子：
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通讯作者：
X. Dai;Yue Sun;Chunsen Tang;Zhihui Wang;Yugang Su;Yanling Li
中科院分区：
文献类型：
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作者：
X. Dai;Yue Sun;Chunsen Tang;Zhihui Wang;Yugang Su;Yanling Li
在感应耦合电能传输（ICPT）系统中，由于负载和耦合参数的动态变化，初级谐振系统参数经常偏离固有工作点，导致电能传输能力和效率急剧下降。为了辨识系统参数的动态变化，提出了基于能量分析的系统动力学参数辨识方法。该方法建立了初级谐振回路的能量供应、储存和耗散函数以及能量平衡方程。并以解析形式给出了系统反射阻抗的求解函数。在此基础上，结合反射阻抗识别，提出了负荷参数识别方法。辨识方法从能量角度出发，避免了复杂的系统建模和高速采样系统的要求。在系统辨识过程中，只需要谐振变量的过零点样本数据。该辨识方法有利于系统控制器的设计。实验结果验证了该方法的有效性。
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.