A New Method for Determining the Parameters of the Elements of the Equivalent Circuits of Multilink Two-port Networks

A new approach to solving the problem of identification of internal parameters of multilink two-port networks by measurements on their external terminals has been proposed and investigated. Many problems of nondestructive control, diagnostics of internal (inaccessible for measurements) parameters of devices, independent control of power consumption and power quality are reduced to the problems of this type. Internal structure of the investigated two-port network in calculations is accepted as known. The multilink two-port network is represented in the paper by the cascade inclusion of several T-shaped two-port networks, the parameters of which are to be determined. The parameters of the elements of the T-shaped two-port networks are determined based on experimental values of currents and voltages obtained only by external measurements of the multilink two-port network. The accuracy and stability estimates of the proposed method are given.