论文信息 - Study on suppressing harmonic flux density of converter transformer core under the DC bias

Study on suppressing harmonic flux density of converter transformer core under the DC bias

Under DC bias, the Converter transformer works from non-saturated area to saturated area. The harmonic current and harmonic magnetic flux of winding will increase. The converter transformer will badly vibrate. In this paper, we build a model of converter transformer by MATLAB which can be add DC voltage on line side or valve side. Under the two conditions, we can get harmonic current value of windings. A 2D FEM model of transformer can be build by ANSYS. According to the theory of coupled field-circuit, the converter transformer can be solved by transient. And Contrasting the electromagnetic properties of converter transformer in two conditions.

Hao Chen | Pengfei Shao | Hanlong Hong | Xifeng Xu

[1] Wang Huawe. Problems Analysis and Improvement for Neutral DC Current Blocking Device Used in Xizhe UHVDC , 2015 .

[2] Jianzhong Wang,et al. FFT formulations of adaptive Fourier decomposition , 2017, J. Comput. Appl. Math..

[3] Behrooz Vahidi,et al. Combined analytical and FEM methods for parameters calculation of detailed model for dry-type transformer , 2010, Simul. Model. Pract. Theory.

[4] Wu Zeng-bo. Analysis of Transient Leakage Field and Harmonic Losses in Windings of Converter Transformers , 2007 .

[5] Fang Liu,et al. A Controllably Inductive Filtering Method With Transformer-Integrated Linear Reactor for Power Quality Improvement of Shipboard Power System , 2017, IEEE Transactions on Power Delivery.