Open AccessExcitation–vibration harmonic response research of transformer in DC biasing operation
Author(s) -
Pan Chao,
Yi Shuangyuan,
Su Hao,
Shi Wenxin
Publication year - 2019
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.815
H-Index - 97
eISSN - 1751-8679
pISSN - 1751-8660
DOI - 10.1049/iet-epa.2018.5203
Subject(s) - biasing , excitation , vibration , transformer , dc bias , control theory (sociology) , voltage , acoustics , materials science , physics , electrical engineering , engineering , computer science , control (management) , artificial intelligence
Aiming at the problem of transformer vibration in DC biasing operation, the relationship between excitation characteristics and vibration is studied. The electromagnetic coupling state equation of transformer in DC biasing operation is established. Then, the dynamic inductance and time‐domain current are calculated based on the energy disturbance principle. On this basis, the identification method of exciting current is studied to present the excitation saturation state. The excitation–vibration harmonic response model is constructed to analyse the relationship between the variation law of exciting current and vibration characteristics of the core under different DC levels. The correctness of this method is verified by the comparison between simulation and experimentation.