短路电流为控制量的节点电压法分析  

Analysis on the Node Voltage Method for Short-circuit Current as Control Quantity

作　　者：赵春江[1] ZHAO Chunjiang(Department of Electronic Information and Electrical Engineering,Hefei University,Hefei,Anhui 230601,China)

机构地区：[1]合肥学院电子信息与电气工程系

出　　处：《西昌学院学报（自然科学版）》2019年第4期58-60,共3页Journal of Xichang University(Natural Science Edition)

基　　金：“电子信息工程”安徽省级教学团队项目（2017JXTD035）;合肥学院项目：电子信息工程专业——电子工程技术专业方向模块改革与实践（2018JXJY120）

摘　　要：节点电压法是常用的电路系统分析方法之一,但当电路有短路线,并且短路电流是受控源控制量时,无法利用传统的节点电压方程的标准形式正确求解这类电路。讨论并分析了这类问题,得出在不改变电路原有网络拓扑结构的情况下,只有把短路电流(即控制电流)当作电流源时,才能得出正确的结果,并且给出了这种情况下合理的解释。该解释扩展了用节点电压法的标准形式求解电路的应用范围,完善了节点电压法通用的求解形式,更有利于以后的教学。The node voltage method is one of the commonly used circuit system analysis methods, but when short circuit occurs in the circuit and the short-circuit current is the control quantity of the controlled source, it is not possible to correctly solve such circuits using the standard form of the traditional nodal voltage equation. This paper discusses and analyzes such issues, and it is concluded that the correct result can only be obtained if the short-circuit current(the control current) is used as the current source without changing the circuit structure. And a reasonable explanation is given for this situation. This interpretation expands the application range of the circuit solution through standard form of the node voltage method, and improves the general solution form of the node voltage method, being more helpful to the future class teaching.

关 键 词：节点电压法 受控源 短路电流 控制量 

分 类 号：TM133[电气工程—电工理论与新技术]