Simulating Analysis of Magnetization Characteristic Curve and Exciting Current of Transformer On DC Bias

摘要：

This paper sets up a simulating model of single-phase transformer under DC bias in MATLAB.Using MATLAB software,the magnetization characteristic curves and exciting currents under no-load condition are simulated and analyzed.The result shows that the magnetization characteristic curves do not shift up,but they are no longer symmetrical under DC bias.They get saturate at one side of X axis.The hysteresis loops become narrow and tend to single-valued curve when DC increases.The corresponding peak values of exciting current get sharp,and the waveform of exciting current is no longer symmetrical too.The harmonics content become more and more abundant.The 1st and 3rd order harmonics increase steadily with increases of DC.Especially the 2nd order harmonic increases rapidly with increases of DC.A few of 4th order harmonic arises.

关键词： transformer:DC bias:magnetization characteristic curve:exciting current

作者: Xia Dong Zhizhen Liu Bin Liu

作者单位: School of Electrical Engineering,Shandong University Shandong Urban Construction Vocational College School of Electrical Engineering,Shandong University Jinan,China

会议类型: 国际会议

会议名称: 2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies(第四届电力设施管制、重建及能源技术国际会议 DRPT 2011)

会议地点: 威海

会议语种:英文

页码: 1848-1851

在线出版日期: 2011-07-06（万方平台首次上网日期，不代表论文的发表时间）