新型整流变压器直流偏磁下的电磁特性分析

Analysis of electromagnetic characteristics of novel converter transformer under circumstance of DC magnetic bias

利用Ansoft软件建立了新型整流变压器的场路耦合数学模型及相应的有限元模型,采用非线性求解精确分析了直流偏磁条件下变压器在空载和稳态运行时的谐波电流情况,并通过加入特征次谐波电流源、投入滤波器研究变压器在抑制谐波、减小机身振动、降低噪声方面的功效,具有一定的实用价值。

A field-circuit coupled mathematical model and the corresponding 3D finite element model of a new type converter transformer were established by Ansoft.By adopting the method of nonlinear calculation,the harmonic current on the condition of DC magnetic bias was accurately analyzed,including both no-load and steady-state operation of the transformer.The function of the transformer on suppressing harmonic,reducing body vibration and noise was studied through adding characteristics subharmonic and the filter,and it was of some practical value.