Transient Simulation of a Transformer Core Demagnetization Scheme

抄録

Switching a transformer primary with a perfectly demagnetized core brings down the possibility of high inrush current. This paper gives a method for transient solution of a scheme which can demagnetize the core after the primary of the transformer is switched off. A transient hysteresis model has been utilized to properly deal with the residual magnetism which has to decay for demagnetization. The method is expected to help the design of such a scheme by quick calculation of the transient current and voltages in the circuit.