Transformer loss analysis based on Comsol
Fangfang Wang, Yanzhe Li, Jianglong Yan · 2024
The purpose of this paper is to study the loss analysis and suppression measures of high voltage and large capacity power transformers. In view of the large volume transformer eddy current loss accounts for a large proportion in the total load loss, the effective control of eddy current loss is of great significance to improve the operation efficiency and safety of the transformer In terms of research content, this paper first takes 10 kV distribution transformer in actual operation as an example. The three-dimensional finite element model is constructed to analyze the eddy current loss effect of leakage magnetic field in transformer. The application of Maxwell’s electromagnetic field theory in eddy current loss analysis is emphatically introduced.By using finite element and mesh splitting method, it is found that the loss and leakage of magnetic flux on both sides are small, while the loss of the core from the middle sandwich is large.