A new identification method of both magnetization characteristic and parameters of an unloaded transformer

摘要

In this paper a new method of identification of both the magnetization characteristic and the instantaneousparameters G(t) and K(t) of a single-phase transformer under a sinusoidal supply voltage is proposed. The instantaneousconductance G(t) and inverse inductance K(t) of the transformer cross section are determined by the scalar product of timefunctions. The magnetization characteristic is derived by means of the inverse inductance K(t). The method is practicallyapplied to an isolating transformer.