可分离变压器的等效磁网络模型及参数计算

Equivalent magnetic network model and parameter calculation for an isolating transformer

可分离变压器是非接触感应电能传输系统的核心部件.根据等效磁通管原理,建立了可分离变压器的等效磁网络模型.依据磁网络与电网络的相似性,采用节点法建立节点磁位方程,并采用Gauss-Se idel迭代法进行求解.在磁场分析的基础上,推导出可分离变压器电感参数的计算公式,并给出了计算实例.计算结果表明,等效磁网络法原理简单,实现方便,且精度较高,在可分离变压器的设计、分析及优化中可以发挥重要作用.

An isolating transformer is central to the contactless inductive power transfer system. An equivalent magnetic network model for the isolating transformer was developed using the principle of an equivalent magnetic flux tube. The node potential equation was obtainable by means of a node method similar to that of the electrical network model, and the equation＇s solution was derived through the Gauss-Seidel iterative method. Expressions of the inductance parameters of the isolating transformer were deduced on the basis of magnetic field analysis, and those calculations were worked out. The results indicated that the proposed method is simple, practical and precise, and would contribute to the design, analysis and optimization of isolating transformers.