磁路对理想变压器特性方程的影响

The Influence of Magnetic Circuit on the Characteristic Equations for Ideal Transformer

理想变压器是电路理论教学中的重要内容。通常,这部分的教学重点在于理想变压器特性方程及其运用,不涉及磁路分析,导致学生在分析多绕组变压器时错误运用特性方程。本文以三绕组变压器为例,就磁路形式对理想变压器方程的影响进行分析,导出对应于四种磁路形式的理想变压器特性方程。文章对理想变压器内容的教学有一定的指导作用。

Idea transformer is an essential part of teaching electric circuit theory.Generally,the teaching of this part is mainly focused on the characteristic equation of ideal transformers and its applications while the analysis of magnetic circuit is ignored.Influenced by this teaching method,students often apply the characteristic equation incorrectly when analyzing multi-winding transformers.Taking three-winding transformer as an example,this paper has analyzed the influence of magnetic circuit on the characteristic equations and has derived four types of characteristic equations that correspond to four different magnetic circuits.This paper can serve as a significant guide in the teaching of ideal transformers.