T-П形电路等效变换公式的直接导出方法  

Direct Derivation Method of Equivalent Transformation Formula of T-ΠInterconnections

作　　者：田社平[1] 张峰[1] TIAN Sheping;ZHANG Feng(School of Electronic,Information and Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《电气电子教学学报》2023年第3期139-141,共3页Journal of Electrical and Electronic Education

基　　金：上海交通大学2020年教育教学研究项目(JYJX200081)。

摘　　要：从电路测量角度给出了T-П形电路等效变换公式的直接导出方法。通过施加T形和Π形电路相同的激励,然后选择T形和Π形电路合适的对应测量点,使得T形或者Π形电路测量方程仅包含一个参数,从而简化等效变换公式的推导过程。进一步讨论了从电路方程的角度推导T-П形电路等效变换公式的方法。分析过程表明,直接导出方法充分利用了电路本身的规律如分压、分流公式等,推导过程简单、直接。A direct derivation method of equivalent transformation formula is presented from the circuit measurement point of view.This method is based on the definition of equivalent circuit and applies T andΠinterconnections the same excitations.The derivation of the equivalent transformation formula is simplified through selecting appropriate voltage or current measurement equation of T orΠinterconnection with only one parameter.The derivation is further discussed from the circuit equation point of view.The analysis shows that the direct derivation based on circuit equivalence is simpler and more direct because of making full use of the laws of the circuit itself,such as the voltage-divider formula and current-divider formula.

关 键 词：T形电路 П形电路 等效变换 

分 类 号：TM13[电气工程—电工理论与新技术]