Saturable reactor hysteresis model based on Jiles-Atherton formulation for ferroresonance studies

Despite remarkable achievements in the field of Jiles-Atherton (JA) hysteresis theory, JA hysteresis modeling remains challenging given that most commercial software still lacks a practical dynamic JA hysteresis reactor model for electromagnetic transients. A novel voltage-driven dynamic flux linkage-current (ψ-i) JA hysteresis reactor in Electromagnetic Transients Program-Alternative Transients Program (EMTP-ATP) is developed in this study. The proposed model is based on flux linkage and current instead of magnetic flux density and magnetic field. Voltage-driven dynamic losses are incorporated into the static ψ-i JA hysteresis model by using Type-94 element in EMTP-ATP. The two proposed models in this paper are validated using current tests under 50 and 150 Hz. The performance of the proposed dynamic Model 1 matches better with experiments than the dynamic Model 2. Ferroresonance tests are carried out to validate the performance of the proposed reactor. The results show that the proposed reactor has a broad application prospect in electromagnetic transient studies.