Open AccessCalculation of Dynamic Hysteresis Loss of Power Transformer under Harmonic Background
Author(s) -
Shu Meng,
Chengqi Xue,
Zhexu Li,
Jianben Liu,
Qionglin Li,
Du Zhang
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/740/1/012085
Subject(s) - harmonics , transformer , eddy current , energy efficient transformer , harmonic , harmonic analysis , electrical engineering , acoustics , voltage , distribution transformer , mechanics , electronic engineering , physics , engineering
The construction of smart grid uses a large number of power electronic equipment, which leads to the increase of harmonic content of transformer core winding, and brings some difficulties to the calculation of core loss. In order to study the influence of harmonics on core loss, a dynamic hysteresis loss model of transformer core under harmonics is established. On the basis of J-A static hysteresis model, the calculation methods of eddy current loss and abnormal loss under harmonic wave are deduced, and the calculation method of core loss under harmonic wave is established according to the principle of energy conservation. The core loss of three-phase transformer is simulated and verified by experiments under different harmonic frequency and harmonic voltage percentage. The results verify the validity of the model.