S.H. Fathi, M. Rostami, M. Abedi, and C. Lucas (Iran)
Chaos, Power Transformer, Hysteresis
This paper presents the study of chaos in power transformers, including hysteresis effect in the core. In previous studies, [1,2,3], the hysteresis effect was not considered and the magnetic characteristics of the core were represented by polynomials. Since hysteresis causes loss of energy in a transformer and usually is represented by a resistor in the equivalent circuit, it seems to have a damping effect against any oscillation in the system. Furthermore, hysteresis plays more complicated role in system behavior by increasing non-linearity of the system. This can be illustrated by comparison between the simulation results of both cases (with and without hysteresis ) considering various system parameters.
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