一起由谐波引起变压器过热故障的分析及解决措施

Abstract Based on a cable (from the motor to the converter cable) insulation damage fault this article makes in-depth discussion onthe internal structure and principle of the inverter and finds out the causes of abnormal sound and heat of power supply power transformer which lead to the causes of harmonic wave and its harm in daily work and life and discusses several commonly used methods to restrain theharmonic wave.院电力变压器 交-直-交变频器 变频器谐波抑制Key words power transformer AC-DC-AC frequency converter frequency converter harmonic suppression中图分类号院TM41 文献标识码院A 文章编号院1006-4311（2014）15-0050-020